Rolling bearings
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© SKF Group 2013
The contents of this publication are the copyright of the pub
lisher and may not be reproduced (even extracts) unless prior
written permission is granted. Every care has been taken to
ensure the accuracy of the information contained in this publica
tion but no liability can be accepted for any loss or damage
whether direct, indirect or consequential arising out of the use of
the information contained herein.
PUB BU/P1 10000/2 EN · August 2013
This publication supersedes publications 6000 EN, 6000/I EN,
PUB PSD/P1 06003 EN, PUB BU/P1 10000 EN and PUB BU/P1
10000/1 EN.
Certain image(s) used under license from Shutterstock.com
Notice
For important updates and changes to this
catalogue, go to skf.com/10k
Rolling bearings
Rolling bearings
Unit conversions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
This is SKF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SKF – the knowledge engineering company. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
9
14
16
Principles of bearing selection and application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
A Bearing basics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting rolling bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing types and designs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boundary dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic bearing designation system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic selection criteria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21
22
23
26
40
42
46
B Selecting bearing size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A systems approach to bearing selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing life and load ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting bearing size using the life equations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dynamic bearing loads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting bearing size using static load carrying capacity. . . . . . . . . . . . . . . . . . . . . . . . .
Calculation examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SKF calculation tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SKF Engineering Consultancy Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SKF life testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61
62
63
64
84
87
90
92
94
95
C Friction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Estimating the frictional moment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The SKF model for calculating the frictional moment. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting torque. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power loss and bearing temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
97
98
99
114
114
D Speeds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basics of bearing speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Limiting speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Special cases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vibration generation at high speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
117
118
118
126
127
128
2
E Bearing specifics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tolerances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing internal clearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Materials for rolling bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
131
132
132
149
150
F Design considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radial location of bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Axial location of bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Design of associated components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting internal clearance or preload. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sealing solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
159
160
165
204
210
212
226
G Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basics of lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Grease lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubricating greases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SKF greases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Relubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Relubrication procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
239
240
242
244
249
252
258
262
H Mounting, dismounting and bearing care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dismounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
271
272
275
285
291
291
Product data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
1 Deep groove ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
1.1 Single row deep groove ball bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Capped single row deep groove ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 ICOS oil sealed bearing units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Single row deep groove ball bearings with a snap ring groove. . . . . . . . . . . . . . . .
1.5 Single row deep groove ball bearings with a snap ring and shields. . . . . . . . . . . .
1.6 Stainless steel deep groove ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7 Capped stainless steel deep groove ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . .
1.8 Single row deep groove ball bearings with filling slots. . . . . . . . . . . . . . . . . . . . . .
1.9 Single row deep groove ball bearings with filling slots and a snap ring. . . . . . . . .
1.10 Double row deep groove ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
295
2 Y-bearings (insert bearings). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
2.1 Y-bearings with grub screws, metric shafts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Y-bearings with grub screws, inch shafts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Y-bearings with an eccentric locking collar, metric shafts. . . . . . . . . . . . . . . . . . .
2.4 Y-bearings with an eccentric locking collar, inch shafts. . . . . . . . . . . . . . . . . . . . .
2.5 SKF ConCentra Y-bearings, metric shafts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 SKF ConCentra Y-bearings, inch shafts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
421
322
346
374
376
382
386
394
410
414
416
458
460
464
466
468
469
3
2.7
2.8
2.9
Y-bearings with a tapered bore on an adapter sleeve, metric shafts. . . . . . . . . . . 470
Y-bearings with a tapered bore on an adapter sleeve, inch shafts. . . . . . . . . . . . . 471
Y-bearings with a standard inner ring, metric shafts. . . . . . . . . . . . . . . . . . . . . . . 472
3 Angular contact ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
3.1 Single row angular contact ball bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Double row angular contact ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Capped double row angular contact ball bearings . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Four-point contact ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
475
4 Self aligning ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
4.1 Self-aligning ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Sealed self-aligning ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Self-aligning ball bearings with an extended inner ring. . . . . . . . . . . . . . . . . . . . .
4.4 Self-aligning ball bearings on an adapter sleeve. . . . . . . . . . . . . . . . . . . . . . . . . . .
537
5 Cylindrical roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
5.1 Single row cylindrical roller bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 High-capacity cylindrical roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Single row full complement cylindrical roller bearings. . . . . . . . . . . . . . . . . . . . . .
5.4 Double row full complement cylindrical roller bearings. . . . . . . . . . . . . . . . . . . . .
5.5 Sealed double row full complement cylindrical roller bearings. . . . . . . . . . . . . . .
567
6 Needle roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
6.1 Needle roller and cage assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Drawn cup needle roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3 Needle roller bearings with machined rings with flanges,
without an inner ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.4 Needle roller bearings with machined rings with flanges,
with an inner ring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.5 Needle roller bearings with machined rings without flanges,
without an inner ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.6 Needle roller bearings with machined rings without flanges,
with an inner ring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.7 Alignment needle roller bearings, without an inner ring . . . . . . . . . . . . . . . . . . . .
6.8 Alignment needle roller bearings with an inner ring. . . . . . . . . . . . . . . . . . . . . . . .
6.9
Needle roller / angular contact ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.10 Needle roller / thrust ball bearings, full complement thrust bearing. . . . . . . . . . .
6.11 Needle roller / thrust ball bearings, thrust bearing with a cage. . . . . . . . . . . . . . .
6.12 Needle roller / cylindrical roller thrust bearings. . . . . . . . . . . . . . . . . . . . . . . . . . .
6.13 Needle roller bearing inner rings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.14 Needle rollers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Tapered roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
7.1
Metric single row tapered roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2
Inch single row tapered roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3
Single row tapered roller bearings with a flanged outer ring. . . . . . . . . . . . . . . . .
7.4
Matched bearings arranged face-to-face. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
506
522
526
530
552
560
562
564
604
640
644
656
668
673
722
730
744
758
770
774
776
778
780
784
786
788
790
794
797
824
842
864
866
7.5
7.6
Matched bearings arranged back-to-back . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 872
Matched bearings arranged in tandem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 876
8 Spherical roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
8.1 Spherical roller bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Sealed spherical roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.3 Spherical roller bearings for vibratory applications. . . . . . . . . . . . . . . . . . . . . . . .
8.4 Spherical roller bearings on an adapter sleeve. . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.5 Spherical roller bearings on a withdrawal sleeve. . . . . . . . . . . . . . . . . . . . . . . . . .
8.6 Sealed spherical roller bearings on an adapter sleeve. . . . . . . . . . . . . . . . . . . . . .
9 CARB toroidal roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
9.1 CARB toroidal roller bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 Sealed CARB toroidal roller bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3 CARB toroidal roller bearings on an adapter sleeve. . . . . . . . . . . . . . . . . . . . . . . .
9.4
CARB toroidal roller bearings on a withdrawal sleeve . . . . . . . . . . . . . . . . . . . . . .
10 Thrust ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
10.1 Single direction thrust ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.2 Single direction thrust ball bearings with a sphered housing washer. . . . . . . . . .
10.3 Double direction thrust ball bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.4 Double direction thrust ball bearings with sphered housing washers. . . . . . . . . .
879
904
928
936
940
946
954
957
980
996
1000
1004
1009
1016
1026
1030
1034
11 Cylindrical roller thrust bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1037
Product table
11.1 Cylindrical roller thrust bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1048
12 Needle roller thrust bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1057
Product tables
12.1 Needle roller and cage thrust assemblies and appropriate washers. . . . . . . . . . . 1070
12.2 Needle roller thrust bearings with a centring flange and appropriate washers . . 1074
13 Spherical roller thrust bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1077
Product table
13.1 Spherical roller thrust bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1090
14 Track runner bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
14.1 Single row cam rollers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14.2 Double row cam rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14.3 Support rollers without flange rings, without an inner ring. . . . . . . . . . . . . . . . . .
14.4 Support rollers without flange rings, with an inner ring. . . . . . . . . . . . . . . . . . . .
14.5 Support rollers with flange rings, with an inner ring . . . . . . . . . . . . . . . . . . . . . . .
14.6 Cam followers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1099
1126
1128
1130
1132
1134
1140
15 Engineered products. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1149
15A Sensor bearing units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1151
Product table
15A.1 Motor encoder units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1166
5
15B
Bearings for extreme temperatures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
15B.1 Single row deep groove ball bearings for extreme temperatures . . . . . . . . . . . . .
15B.2 Y-bearings for extreme temperatures, metric shafts. . . . . . . . . . . . . . . . . . . . . . .
15B.3 Y-bearings for extreme temperatures, inch shafts. . . . . . . . . . . . . . . . . . . . . . . . .
15C Bearings with Solid Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15D SKF DryLube bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15E INSOCOAT bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
15E.1 INSOCOAT deep groove ball bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15E.2 INSOCOAT cylindrical roller bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15F Hybrid bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
15F.1 Hybrid deep groove ball bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15F.2 Sealed hybrid deep groove ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15F.3 XL hybrid deep groove ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15F.4 Hybrid cylindrical roller bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15G NoWear coated bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15H Polymer ball bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
15H.1 Polymer single row deep groove ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . .
15H.2 Polymer thrust ball bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 Bearing accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product tables
16.1 Adapter sleeves for metric shafts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.2 Adapter sleeves for inch shafts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.3 Adapter sleeves with inch dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.4 Withdrawal sleeves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.5 KM(L) and HM .. T lock nuts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.6 MB(L) lock washers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.7 HM(E) lock nuts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.8 MS locking clips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.9 N and AN inch lock nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.10 W inch lock washers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.11 PL inch locking plates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.12 KMK lock nuts with an integral locking device. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.13 KMFE lock nuts with a locking screw. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.14 KMT precision lock nuts with locking pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.15 KMTA precision lock nuts with locking pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16.16 KMD precision lock nuts with axial locking screws. . . . . . . . . . . . . . . . . . . . . . . . .
1169
1178
1182
1183
1185
1191
1205
1212
1214
1219
1230
1232
1236
1238
1241
1247
1262
1266
1269
1290
1298
1304
1310
1316
1318
1320
1324
1326
1330
1332
1333
1334
1336
1338
1340
Indexes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1342
Text index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1343
Product index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1364
6
7
Unit conversions
Unit conversions
8
Quantity
Unit
Conversion
Length
inch
foot
yard
mile
1 mm
1m
1m
1 km
0.03937 in.
3.281 ft.
1.094 yd.
0.6214 mi.
1 in.
1 ft.
1 yd.
1 mi.
25,40 mm
0,3048 m
0,9144 m
1,609 km
Area
square inch
square foot
1 mm2
1 m2
0.00155 sq-in
10.76 sq-ft
1 sq-in
1 sq-ft
645,16 mm2
0,0929 m2
Volume
cubic inch
cubic foot
imperial gallon
US gallon
1 cm 3
1 m3
1l
1l
0.061 cu-in
35 cu-ft
0.22 gallon
0.2642 US gallon
1 cu-in
1 cu-ft
1 gallon
1 US gallon
16,387 cm 3
0,02832 m 3
4,5461 l
3,7854 l
Speed,
velocity
foot per second
mile per hour
1 m/s
1 km/h
3.28 ft/s
0.6214 mph
1 ft/s
1 mph
0,30480 m/s
1,609 km/h
Mass
ounce
pound
short ton
long ton
1g
1 kg
1 tonne
1 tonne
0.03527 oz.
2.205 lb.
1.1023 short ton
0.9842 long ton
1 oz.
1 lb.
1 short ton
1 long ton
28,350 g
0,45359 kg
0,90719 tonne
1,0161 tonne
Density
pound per cubic inch
1 g/cm 3
0.0361 lb/cu-in
1 lb/cu-in
27,680 g/cm 3
Force
pound-force
1N
0.225 lbf.
1 lbf.
4,4482 N
Pressure,
stress
pounds per square inch
1 MPa
1 N/mm2
1 bar
145 psi
145 psi
14.5 psi
1 psi
6,8948 ¥ 10 3 Pa
1 psi
0,068948 bar
Moment
pound-force inch
1 Nm
8.85 lbf-in
1 lbf-in
0,113 Nm
Power
foot-pound per second
horsepower
1W
1 kW
0.7376 ft-lbf/s
1.36 hp
1 ft-lbf/s
1 hp
1,3558 W
0,736 kW
Temperature
degree
Celsius
t C = 0.555 (t F – 32)
Fahrenheit
t F = 1,8 t C + 32
Foreword
This catalogue contains the standard assort
ment of SKF rolling bearings typically used in
industrial applications. To provide the highest
levels of quality and customer service, these
products are available worldwide through SKF
sales channels. For information about lead
times and deliveries, contact your local SKF
representative or SKF Authorized Distributor.
The data in this catalogue reflect SKF’s
state-of-the-art technology and production
capabilities as of 2012. The data contained
within may differ from that shown in earlier
catalogues because of redesign, technological
developments, or revised calculation methods.
SKF reserves the right to continually improve
its products with respect to materials, design
and manufacturing methods, some of which
are driven by technological developments.
Getting started
This catalogue contains detailed information
about standard SKF rolling bearings, several
special engineered products and bearing
accessories. Engineered products include
motor encoder units, which can measure the
speed and direction of rotation, polymer bear
ings and rolling bearings designed to fulfil
additional requirements, such as:
• extreme temperatures
• electrical insulation
• dry lubrication
• insufficient lubrication
• rapid speed changes
• high vibration levels
• oscillating movements
for a particular application. In this section,
bearing service life, speed capabilities, fric
tion, general design considerations and lubri
cation are discussed in detail. Installation and
maintenance information is also included.
More practical information about mounting
and maintenance is provided in the SKF bearing maintenance handbook (ISBN
978-91-978966-4-1).
The latest developments
The main content updates compared to the
previous catalogue include the addition of
Y-bearings and needle roller bearings as well
as the following featured products:
SKF Energy Efficient bearings
To meet the ever-increasing demand to reduce
energy use, SKF has developed the SKF
Energy Efficient (E2) performance class of
rolling bearings. SKF E2 bearings are charac
terized by a frictional moment in the bearing
SKF Energy Efficient
bearings are identified
by the designation
prefix E2.
The first section, which contains general tech
nical information, is designed to help the
reader select the best, most effective products
9
Foreword
that is at least 30% lower when compared to
a same-sized SKF standard bearing.
High-capacity cylindrical roller bearings
SKF high-capacity cylindrical roller bearings
combine the high load carrying capacity of
full complement bearings and the high speed
capability of bearings with a cage. They are
designed for applications such as industrial
gearboxes, gearboxes in wind turbines and
mining equipment.
SKF high-capacity
cylindrical roller bearing
SKF DryLube bearings
SKF DryLube bearings are a new option for
extreme temperature applications. They are
filled with a dry lubricant, based on graphite
and molybdenum disulfide. The dry lubricant
can protect the rolling elements and raceways
from damage caused by solid contaminants.
SKF DryLube bearings provide effective lubri
cation for high temperature applications, low
start-up torque at any temperature and low
frictional moment during operation.
SKF DryLube bearing
Polymer ball bearings
Polymer ball bearings are an excellent solution
from both a technical and economic perspec
tive, in applications where resistance to mois
ture or chemicals is essential. Polymer ball
bearings use bearing rings or washers made of
various polymer materials and balls made of
glass, stainless steel or polymers. They are
lightweight, self lubricating, quiet running,
and resistant to corrosion, chemicals and wear
and fatigue.
SKF ConCentra Y-bearings (insert bearings)
Polymer ball bearing
The SKF ConCentra locking technology pro
vides a true concentric fit of the bearing on a
shaft, to virtually eliminate fretting corrosion.
These bearings are as easy to mount as bear
ings with grub screw locking.
SKF ConCentra Y-bearing
10
end
ed
ner
r ca
t
as
• light ring rotati
relia bl of which 9 0 L10 , i.e. the pped bear- in
on
y
ti
• oper load (P ≤ 0,
relu br lu br ic ated. % of the bear me period
05 C)
at
ic
T
atin
vals, pa ation interv he method ings are still
tempe g tempera
to
al
ge
ra
s
es
(†
2
tu
tim
52
and sh
re zone ture within
(† ta
ould no ) represen Relubricatio ate
th
of the
bl
e 4, pa
• st at
ts the
t be us
grea se e green
T he gr
ge
L01 gr n interio
ea se lif
• low nary machi 305)
on the ea se life fo ed.
vibr at
ne
e
oper at
r capp
io
factor
ed
in
n
g
le
be
tem
vels
.
ar
For st
Diagr It can be ob perature an ings depend
ai
tained
am 1 is
d the sp
s
grea se nless steel
ball be
fr
be
ar ings valid for st an om the diag eed
and m , use the sc al ar ings fille
(GPF)
.
is liste T he grea se dard deep rams.
ultiply
d with
e corr
groove
d in ta
gr am
Diagr
perfor
by 0,2 the value ob esponding to V T 378
am
bl
.
tained
deep gr 2 is valid e 4 († pagemance factor
for
from th GPF = 1
oo
3
e diaT he gr ve ball bear SK F Energy 05).
Ef ficien
follow ea se life fo ings.
t
ing op
er atin r each is va
lid
g cond
itions: under the
Text in
dex
Grease life calculation for capped deep groove
ball bearings
Capped deep groove ball bearings and Y-bear
ings (insert bearings) are typically greased for
A
life. SKF did extensive research to enable a
A
theoretical approach to estimateanthe
grease
gular
cont
nu ts an ac t ball be
life depending on bearing speed,mlootckoperating
or enco d lock ing dear ings 47
9, 5 0 4
der un
tr ac
vice
A BM A k runner be it s 1 161 s 1 28 0, 1 2
temperature, load and other factors.
ar ings
89
st anda
Gr ea se
wher e life for ca
pped
P = 0,
de ep
05 C
gr oo
Gr ea se
100 00
life L
0
10
ve ball
bear in
gs
[h]
n dm =
Diagra
100 00
0
200 00
ca
0
lc ul at
n dm =
ion
20 00
30m
co
0 00
0
pa0re d ex amples
10 00
adju
0
40st
in0g be to limit ing sp1 25
0 00
ar ings
abut m
an
ee d 1
rd s 41
1 10 3,
gu
la
en
50
26
1 107,
0 000 r cont
abut m t collars
fo
ac
1
r
1
t
in
2
ba
ents
206
5
ll bear
600 00tern al cl
fo
dimen
in
ea
r pr el
0
oad 2 rance 27 gs 49 8
pr
tolera sions 2 0
70oc
18 –2
7
0 00
ed
A C 5 nces 169,8 –2 0 9
tapere0ur es 2 2 1– 2 0
1 000
0
2 0 0 –2
2 25
d rolle
A
A C curr 4
FB
02
r bear
M A st
ent
in
an
gs
ag
da
ricultur
pr ot ec
rd s 41
8 16 –8
17
and Y- al applic at
pr ot tion w it h
ions
Grease life estimation
forbe
capped
ar ings bearings
A C motec tion w it h hy br id bear
sp ec
A H 45 if ic at ion lif 435, 4 4 6 –4
acce ss or s 1 152 IN S O C O AT ings 1 2 2 0,
e
be
7
1
or
47
8
2
ar
100
3
2
ings
alcoho
acet on ie s 1 269
1209 6
ls 1 2
GPF =
–1 3 41
1 40al ig nm
51
ac id s e 1 251
GPF =
ent ne
45 50
2 55 ca
re sist
le lle
GPF =
55 ed
ge s 69
60 ro
an
4 70 60 65
r bear
3
65
–6
de
70
re sist ce of poly
9
70 75 in gs
75 si80
gns an 75 580, 714
8
ac ry lo ance of se mer ball be
85 d90
dimen
varian 85 90 80 6
85 3, 7 76 –7
al
ni tr ile
95 ts
79
100610
-but ad m at er ials ar ings 1 2
fi ts an sion st anda
8 35 95 100 1090 95 10
hy dr
0 105
rd
d to
5 110
11
n = ro in
A D A ogenat ed ac iene ru bb er 15 6 –157 51
110 11
115
tel rnal lerance cl s 70 3 0 115 120 12
5 8 0, 6
dm = be tationa
ry
(N
sp
as
lo
cl
B
5 130 120 125 13 5
ni tr ile
ad ap te
R
se s 7
ar ing
0
lo meas eed [r/meain]rance
0
135 14
-but ad ) 155
for va
16
= 0,5 (d ad
r slee ve2
n dia
7
7
1
rious
0 145
m1et er
02 –70
+ D)
iene ru
mis
gr ea se Op er at ing te
ax ial lo
s 1 27
[mm]
al
3
ig
pe
m
3
bb
pe
rform
er (HN 0 6
mount nment 52
ance fa rature [°C
bear in ad carr ying 0 –1 274, 1
B R) 1
]
ct or s
2
(GPF )
56
pr oduc ing 718 , 702 –70 3
co at in g seat tolera capaci ty 8 9 0 –1 3 0 9
94
nces
tempe t ta bles 7
de sign gs 1 270
2 0 0 –2
76
01
tolera rature limit –7 79
de sign at ion sy st em
alipha nces 702 s 714
dimen s and varian 1 28 8 –1
tic
–7
28
sion st
ts 1 2
re sist hy dr oc ar bo 0 3
anda
70 –1 9
an
Tfodiarsm
pC AeouRrntein
re sist ce of fluorons
g bear rd s 1 274 27 3
d
in
B
gs
r
al
oalllro
kalis ance of poly ru bb er 1
28 8 –2
for inch toroid
e
r
m
56
t
8
er ball
h
sh
ller ber u s 9
af ts 1
re sist
for met
bear in
ar in t b
an
2
gs 1 2
re sist ce of po
for oil ric shaf ts 9 8 –1 3 0 3 gs 9e7a
1)
5,r1in
51
0 0g0s
A llen w ance of po ly mer ball be
–10 0 3
for se inje ct ion 1 1 2 9 0 –1 2 97
ly
re
,
ar
1 27 3
lf2
ings
alumin nc he s † ur et hane
for sp aligning ba 70 –1 272
1 251
iu
1
he
heri
ll
in poly m ox ide (A l xagonal ke57
1 27 3 cal roller bebear ings 5
ys
4 6 –5
ar ings
on IN mer ball be 2 O3 )
for Y-be
89 8 –8 47, 5 6 4 –5
ambien S O C O AT be ar ings 1
mount ar ings 42
9 9, 94
6
2
0 –945 5, 1 27 3
amines t tempera ar ings (coa 51 , 1 26 0
on a st ing bear ings 2 –42 3, 42
, 95 4 –9
ture
ting)
1
7,
ep
5
47
24
6
am
2
pe
1206
55,
78
0 –471
0
d shaf
mon
pr oduc
t
A MP S ia 152 , 1
sp acer t ta bles 1 2 07, 1 270
5
2
angle up er seal ™ 4
tapers rings 2 07, 9 0 –1 3 0 9
co
ri
ng
nn
s 57 1
1 270
ec tors
angle
thread 1 274
,6
se
angula ries 4 0 0 4 –6 39 1 15 4, 1 155
tolera s 1 274
,
r co
nces
ac
adju stcutnttabs
w it h
1 274
Printed and
navigation1161
bear in
ment t ballsimplify
ad ap te inch dimen
as
du
gs 47
so
ring m
rt men
5 –535
ou
A DB rs 1 10 8 , 1 sions 1 3 0 4
t
ax
nt
47
ing
ial lo
6,
5
1 10
–1 3 0 9
addi ti 8 0, 6 02
bear in ad carr ying 5 0 0 –5 02 2 2 1– 2 25, 2
ve s
77
cage s g ar rangem capaci ty 47
in gr ea
combi 4 8 0 –4 8 1 , ents 16 0 –1 6, 49 8
in oil se 24 4, 24
ne
49
2
63
8
6
d
7
, 25 4
5 –26 6
w it h a
adju st
cont ac
ed
ne
t
ed
le rolle
adju st bear ing
de sign angle 47
sy st
ed
r
6
de sign pr ov isions , 4 8 6 –4 87, bear ing 6 8
adju st re ference sp ems 16 3
ment
de sign at ion sy st em49 8 –49 9 49 8 , 5 0 4 4 –6 85, 78
fact or ee d 1 2 0
0 –78 3
s and
s 1 2 1–
5 0 4 –5
di
va
m
ri
1 24
en
05
an
Not e:
dimen sion st anda ts 28 , 476
Desig
rd
nation
dou bl sional st abili s 4 8 6 –4 –4 8 4
pr ef ix
e row
87
ty
es and
49
be
for un
7
ar in
su ff ix
iv
es ar e
four-p er sal m atchgs 478 –47
show n
9,
oint co
nt ac t ing 47 7, 5 0 52 2 –52 9
in bol
d.
ball be
ar ings 0, 5 0 6 –52 1
4 8 0, 5
3 0 –535
Extended assortment for value-added bearings
The assortment of capped bearings, SKF
Explorer bearings, electrically insulated bear
ings and hybrid bearings has been extended.
Deep
How to use this catalogue
ner b e
Bear in
groov
g t y pe
e ball
an d de
bearin
This catalogue is divided into two main sec
signs
gs 1
Y
-bear
tions: a technical section and a product sec
i
n
g
s (inse
tion. The technical section describes in detail
r t bea
how to select and apply rolling bearings and
rings)
2
ngula
covers eight main topicssinmarked
printed
gle dir withA
ec tion
r
A
c
o
with o section is div
n
tabs from A to H. The product
t
ac t ba
r
sc rew without (70
ll bear
ided
into chapters by product
dow n Each chapter
) a cov
dou ble type.
71
ings
b
e
e
r
a
r
in
dirabout
gs
ec tion the bear
3
contains specific information
(71) Selfalignin
ing type and its optional variants and product
g ball
tables. Each product chapter is clearly marked
bearin
gs 4
by cut tabs with an easily identifiable icon.
Cylind
r
arin
ical ro
ller be
ar
gs Find information quickly
r b e ar
in
h a thic gs († paThe
ge 10catalogue is designed so that specific
k
9 9) ar
unt un walled ouinformation
e can be found quickly. At the front
t er
it
Need
ack s a s are u sed in r ing. T hese
n d c on
of
the
there is the full table of con le
a
ll tcatalogue
y pe s o
v e y or
s y s t em
tents.
Ats. thef back, there is a product index and
a full text index.
C am r
Taper
ed
oller s
single
r
dou ble ow (72)
row (7
3)
73
s
Spher
ical r
roller
roller
ings
5
bearin
gs 6
bearin
gs 7
oller b
ear
ings
1 343
8
al roll
r bear text index helps to locate
Ae
comprehensive
ing quickly.
specific information
9
T
h
r
u
S uppo
s
t
b
r t r oll
all bea
er s
withou
rings
t f la
C rind
10
with o nyglein
gr
s ical r
r with
oller t
withou out cont a
hrust
c
with a t an inner r in t seals
bearin
n inne
r r ing g
gs 11
(7
Needl 4)
e rolle
r thru
s t bea
rings
S
p
12
h
erical
with f
lange
r
o
r
bear in
ings, b
l
l
e
r
thrust
gs
a sed o
n ne e d
with o
bearin
le rolle
r wit
r
gs 13
with a hout cont a
c t sea
c ag e ls
g
with a
r
a
full co uided roT
c
mplem ller setk(7runn
5
en t r o
er bea
ller se )
rin
t
C ARB
toroid
Index
11
m1
Foreword
Find product details quickly
A quick way to access detailed product data is
via a product table number. Product table
numbers are listed in the table of contents at
the front of the catalogue, in the table of con
tents at the start of each product chapter and
in the product index at the back of the
catalogue.
Identify products
Product designations for SKF rolling bearings
typically contain information about the bear
ing and additional features. To specify an SKF
bearing or to find more information about it,
there are three options:
• Product index
The product index at the end of the cata
logue lists series designations, relates them
to the bearing type and guides the reader to
the relevant product chapter and product
table.
• Designation charts
Product designations in each product chap
ter are located on the pages preceding the
product tables. These charts identify com
monly used designation prefixes and
suffixes.
• Text index
The text index at the end of the catalogue
contains designation suffixes in alphabetical
order. They are printed bold for quick
browsing.
Produ
ct inde
Tex t in
J
A bu tm
1, 2
da
min .
in .
171
171
172
172
174
17 7
18 1
81
82
82
7
16 5
16 2
16 8
16 3
174
171
18 1
17 7
17 3
18 0
176
185
193
18 8
18 4
19 0
185
19 8
19 9
194
2 02
19 8
208
2 15
2 10
220
223
2 27
22 1
2 32
230
d fillet
da
m ax .
mm
161
161
16 2
16 2
16 4
16 4
167
en t an
229
229
25 8
25 8
276
32 3
249
249
26 8
26 8
293
30 6
30 6
32 3
299
3 26
3 26
343
343
2
2
2 ,5
2 ,5
3
2 ,5
2 ,5
3
2
2 ,5
2 ,5
3
3
sions
C alcu
ra
m ax .
lation
e
fact or
Y1
2
2
2
2
2 ,5
2 ,5
3
0,2
0,28
0,28
0,37
0,24
0,33
0,33
0,2
0,28
0,28
0,37
0,25
0,33
3,4
2 ,4
2 ,4
1 ,8
2 ,8
2
2
3,4
2 ,4
2 ,4
1 ,8
2 ,7
2
0,2 2
0,3
5
3,6
3,6
2 ,7
4,2
3
3
5
3,6
3,6
2 ,7
4
3
3
s
Y2
–
2
2
2
2
2 ,5
3
2
2
2
2
3
x
J
Da
m ax .
2 14
2 14
238
238
256
256
303
269
269
28 6
28 6
303
dimen
de x
Desig
Y0
3,2
2 ,5
2 ,5
1 ,8
2 ,5
2
4,6
2 ,3
0,28 product
Numbered
tables
make
it easier to a
ccess product data.
2 ,8
3
,4
2 ,4
1 ,8
2 ,7
0,37
0,25
0,2 2
0,3 1
0,28
0,37
0,24
3,6
2 ,7
4
3
2 ,2
2 ,4
1 ,8
2 ,8
4,6
3,3
3,6
2 ,7
4,2
2 ,2
2 ,5
1 ,8
2 ,5
2 ,8
2 ,2
2 ,5
1
,8
1 Deep
0,3
groove
2
ball be ,8
2 ,3
0,4
ar ings
3,4
1 ,7
0,24
2 ,2
2 ,5
2 ,8D
esign
4,2
ation s21,8,6
0,2 2
ystem
3
0,3
4,6
2 ,3
0,4
2 ,8
1 ,7Prefixes 3,4
0,24
2 ,2
2 ,5
2 ,8E2.
0,35
1 ,6
SK F En
1 ,9D/ICOWS- 4,2 Oil
erg Eff
seale d2y,8
icient
W
2 ,9 Stainl
bearing
be
es ste aring unit
Stainl s1
el, inc
es s ste,8
h dim
Ba sic
Lis ted
Su ffi xe
Gr oup
E
de sig
in dia
el, me
nation
gr am
2 (†
s
1: Int
er nal
de sig
page
L
Gr oup
en
tric dim sions
ensions
43)
n
Reinforc
ed ball
se t
Gr oup
2: Ex ter
nal de
sign (se
N
als , sn
NR
ap rin
Snap
g gr oo
N1
ring gro
ve etc
Snap
.)
ov
R
e in
rin
One loc g groove the ou ter
-R S1 ,
in
ring
Flang ating slot (no the ou ter
-R S2 , -2RS 1
ed
ring, wi
Conta ou ter rin tch) in on
-R SH -2RS 2
g
e ou ter th appropri
ct
,
Conta seal, NBR,
ate
ring sid
-R SL , -2RS H
ct seal,
on
e face snap ring
on
-2
Conta
e or bo
FK M,
-R Z, -2 RS L
ct
Lo w-fri seal, NBR, on one or bo th sides
-Z , -2 RZ
Z
Non-conction seal, on one or bo th sides
-Z NR
Shield tac t seal, NBR, on on th sides
e
Shield on one or bo NBR, on on or both sid
-2 ZNR
e
es
on
th
or both
one sid
sides
the op
sides
-2 ZS
e,
Shield po sit e side snap ring gro
X
of
Shield on both sid the shield ove in the
es
ou ter
Boundaon both sid , snap rin
ring, sn
g gro
es ,
ry dim
ap rin
ensionsheld in place ove in the
g on
Gr oup
ou
by
not in
3: Cage
accord a ret ainingter ring, wi
de sig
th snap
ance wi
rin
n
–
ring
th ISO g
dimen
M
sion ser
Stamp
ies
ed
ste
Machine
el cage
MA (S)
identi d bra ss ca , ball centre
MB (S)
fie
ge, ba
Machine d by a numb
ll centred
TN 9
d
er
d;
bra
fol
Machine
ss
low ing dif fer en
TNH
t de sig
d bra cage, ou
the
Gla ss
ns or ma
VG15
fibre rei ss cage, innter ring cen M, e.g . M2
61
ter ial
Gla ss
grade
fibre rei nforce d PA er ring cen tre d. The S
s are
Gla ss
fibre rei nforce d PE 66 cage, ba tre d. The S indicates a
ll centre indicates lubric ati
EK
nforce
d PA 46 cage, ball
a lubric on groov
centre d
cage,
e in
ation
d
0 2 8 ..
0 3.. . . . . . . . . .
.....
.
0 7. .
. . . . . . . . . . Inch
.
.
0 9. . . . . . . . . . . . . . . . Inch single ro w
.....
.....
tape
sing
. . . .K
. . . . . . Inch sing le ro w tape re d roller be
. . In
1 0..
ch sing le ro w tape re d roller be ar ings . . .
.
..
1 1 .. . . . . . . . . . C A R B to
re
ar
le
.
.....
roid al row tapere d roller bear ings . . . . . . . . . . . . . . .
1 1 2 .. . . . . . . . . . cy
.
...
li
d ro
...
ings
el f-alig ro ller b
. . . . . n driSca
1 1 5.. . . . . . . . . . cy
rollenirng ba earing ller bear ings . . . . . . . . .. . . . . . . . . . .. . . . . . . l.
lin. Inchl si
.
s
.
b
.
ll
.
e
.
be
9
a
ng
.
6
ri
.
1 2 .. . . . . . . . . . p. .o. . . driSca
ar
l rollele row ngs in5gs
..... ......... ......
0 , 978
el f.....
. . . . ly
.
r
ta
.
m
.
7
al
th
.
.
pe
e
3
.
ig
.
.
ru st red ro , 6 0.2. . . . .
..... ........
1 3..
. . . . . sp . Inr ch
b all b ening ba
.....
.
.
earinlle
.
singleari ng ll bebar
....
1 3 0.. . . . . . . . . . . . .h. e. rica
ar ings . . . . . . . . .
sr be
ings g
l
ro w ta
s
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.
0
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f.
w
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.
2
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it
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.
9, 0.4. . . . .
.....
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1 4 ..
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2 , 0.4. . . . .. . . . . . . . . . .
..
ba n bes 8 roller be an ex te1nd
.
. . . .v
1 5.. . . . . . . . . . 3. 0. . . . S el f-al4ig5ni7ng ba ll g
ar in8gs
7 ....
2 , 9 ar ings . ed in1ne
.
.
. . . . . r ring . . . . . . . . . . .lo.ck
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.....
1 55.. . . . . . . . . . .C.A. R
.
.
...
.
.
to
ba
...
chid
...
...
.....
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ll bear
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1 6 0.. . . . . . . . . . sp
. Inch
le ro
l ro
ings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .d.e
llewr ta
. . . . h. erica
l rosing
b epe
1 6 0.. . . . . . . . . .ke to
rendgro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .de
.
ari
erlebro
.....
/H
.....
.
. n e In5ch sillng
.....
s lle9r6be
eawrita
pe
.
n
.
1 61 .. R . . . . .ke y. .sl. . . s S1in
re
ar
6
le
.
0
.
.
g
, 9in
78gs . . . . . . . . . . . . . . . . . . . . . . . .d.im
lle
. . . . .o ts
gle ro ro w tapesre8d8ro
.
.. ..
, 9r0be
. . . . fo
1 6index
. P1 2information
.....
.....
. . . ke
d ro2lle
1 .. /H . makes
2 arainbearing’s
78 , 1w2deep gr based
gs
. . r.
. . .ys
The product
on
.
.
.finding
. . † ol ym
er sing
8le
17 26 2 . . . . . . ke
0 –1 2oo
ve ball r bear ings . . . . . . . . . . . . . . . . . . . . . . . . . fo
. . r. .s
. . .y.w. a . hSeinxa
g
8
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.
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1
n
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.
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w
.
,
a
.
ro
.....
designation
.....
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.....
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keepys deep1gr
w lde
289 ar ings .
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.
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ol
.
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7
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in
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ve ba
er
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1 8 6..
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. . . . . . . . . .a.n.d. . Y-bear ings ng
28de1epball bear in ll bear ings . . . . . . . . . . .. . . . . . . . . . . . lo
o .
19..
b eaY-be
. . . .se
..... .....a
ngarsin w it h a st anda gr oove ballgs . . . . . . . .. . . . . . . . . . . . . . . . . . . .. . m
.
. . . . . . .n.d. .S Inri
..
. . . .a.ti n
r ewxt
.....
bear in
it hrea st
rd inne
ch singfogs
..
. . . KF D
ki.n. e. m
. . . . . . . . . . . . . . pre
ry
gs
m
2 .. .
an
r
le
ri
e
L
da
ro
ng
.
u
In
te
ci
.
.
..
ch ng b e bwe tape
.
a
.
.
s
mrdp einra
netu
arinre
2 .. NR . . . . . . . . .ki n em tic repsi
r ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . .pro. . . .
lenislehrow ta
gsd ro
. . .d. u. c
.
.....
s . 1. 1
.....
1 1lle9r3bearre
.
ment/pere
.
.
2 ..-2 Z . . . . . . . . . . . . .aticS in
vi
.
7
.
.
.
d
sc
.
.
.....
. to
st arvroaller be ings . . . 6 . . . . . . .
o si ty
. . le
.
. . ra
...
. . n.
.....
.
2 ..-2 Z . . . . . . . . . . . . . S in gle row
de†
. . it. h
ep vi sc si ty tion ar
..... ......... ...w
.
10in0gs
.
.
.
.
.
.
a
,
.
.
.
2 ..-Z NR . . . . . . . . . . S hi gle row de ep gr ooove
.
10 2 . . . . . .
..
lo
.. ..
ba
.
.h
. . . . . . . . . . . . . . .w
. .a. . .
2 ..-Z N . . . . . . . . . . . . . . S hi elde d single gr oo ve ba ll bear ings w
.....
n
. . . it
.
.h
. . . . . .w
.....
2 1 3.. R . . . . . . . . . . . . S hi elde d single ro w de ep grll bear ings w it h filling sl
. . . . it
ch
.
. . . in
lo
ck w
....
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a
sh
.
.....
.
ot
el
.
e
.
ro
r
2 2 ..-2
. . . . .L . . . . Sph de d single w de ep gr oo ve ball be ar ings w it s and a sn . . . . . . . .de sig
h filling
. . . . .n 1
.....
ap ring
ro w
oo ve
er ic
ar in
2 2 2 .. R S 1 . . . . cy
..
.
slot
. .in. st
el f-aligal roller bearde ep gr oo ve ball bear in gs w it h filli
. . . .li. n driSca
. . a. ll. .ati.o.
ng sl s . . . . .
gs
2 2 2 .. . . . . . . . . . lo
.
in
ba
...
. .ro
-2
ll nir ng
. . . nu S eallero
. .d.u. ct
ll bear gs . . . . . . ll bear ings w it h filling ot s and a sn. . p
baleba
2 2 3.. C S 5 . . . . . ck
.
. Stsphan d seelfa
.
ta
sl
.
in
.
w
ri
lo
..
ot
ap
..
it
ngs gs . . .
ck inng
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erdic lo ck inigning
g cl. ip
2 2 3.. . . . . . . . . . . .o. ly
02 . . . . . .. . . . . . . . . . .h filling slot ss . . . . . . . . . ri
. eSrea
. .s. .
rolle g d ball6be
b a al
/V
.
.....
.
in
ehe
.....
2 2 3.. A 4 0 5 . . .sl. e. e. ve
ari grsbeearviincegss .1ar
. sSph lelld bsp
. . . . . . . . . . . . . . and a snapde.si. g. n
1 2.
28 gs . . . .
/V
.
ri
.
.
er7ic3al, rinca
l ro1lle
2r6be
2 2 3.. A 4 0 6 . .L 4.B. . .5. 75Sph1 2
. . . .7
all a. ti
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0 ar in. . . .9. . . . . . .. . . . . . . . . . .. . . . . . . . . . .. . . . . . . .in. .st.ng
8
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.5.B. . .
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r
9
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er
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n
.
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.
.
.
gs
ic
ar ings
.....
.....
. . . . . pro du. . . . . a
3 al rolle
2 3..
..
....
6. S
. . . . . ct ta .
.
. . . 0 3 pher ic al ro r bear ings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lo
. . . . . b le
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ller
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.
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2 3 0.. R S 1 . . . .L7.B. . . . 1 2S4el2 ,le1d2sp
. s
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Gr
. . . . .6 0 3 f-alig4 4
. . . .n. 1. . .
.....
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2 3 0.. .4.1. ou. p. 4. . . . L
. . .2.78 –
.
.
.
.
in
.
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.
. .7.D. .A .1 S eale d ning ba
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. . a. ll. a
. . 2S4 2 , self-al ll bear ings ings . . . applic at ions . . . . . . . . . . . . . . . . . . st
4.3
2 3 0..
.
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.
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4.4
la
n
.
.
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. . b. yr
pher1ic24 4 igning
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.
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.
. .d.u. ct
. 4.5
. in
. 4.6
al ro, lle
2 3 1 .. C S 5 . . la
....b
1 2r 45 ball bear. . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . lo
.
. le
. . . . e. . thSse
eaalelsd 2
. . . . . ta
bear in
.....
.....
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sphe
2 3 1 .. . . . . . . . . . rg
28ri, ca
.ic. .p.
riea
2 3l ro
. . . . thm
-2
npgle4.6
.
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ro
ou
sd: Otsp
2he7he
2 32 .. C S 5 . . . .e.ff. e. ct
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. . . . .cy.li.n. d. ri
. . . file
bear in
.....
.....
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2 32 ..
. . . . . T 2 3. SGrea
.....
.....
. . . . . tap e.re
. . l ro l8
briro
r bear
.....
calle
-2
.
. . . . . .d. ro
tirobe
0ou4ple
d: 0
n in
arte
Lu
spbrhe
–4.53
2 32 .. C S . . . . .li fe. . . . . 3
ings ings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lo
. . . . ller8
icatio
. . o. se
SGJph
rica
n l
-2
. . .fi. ts
.....
.....
.
.
N er ic 5 , 3 2
roller rv al. . 2
. .5. 4. .
4
. . . .1.70
2 3 6.. C S 5 . . . ca
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. . . . . . . . . . . . . . . . . . . lo
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.
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text index
10listed
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lo ad ra tinP6P5
funct on p oly am8.292 , 1
quiet
–6
Dim
K
8.2
3,2
2 ,5
2 ,5
1 ,8
2 ,8
2
2
nat ion
angula
cy lind r contact b
a
ri
spheri cal roller b ll bearings
tap ere cal roller b e earings 5 8 4 8 0, 5 0 4
a
2
d rolle
JA
r b eari rings 9 02 , 6 02
ngs 8
cy lind
22
ri
spheri cal roller b
JB 5 8 cal roller earings
60
2 , 6P0
ro2duct b e ari ng
s 9 02 2
933
Designation chart to decode designation suffixes
12
t
1 Gr
oup
2 Gr
oup
3
/
en4
tio
running
Dimen sional and ru
for an P6P522
P5 + C2sional and ru nning acc ur
guP6la
ac
nning
acc ur y to P5 tol
3 r coP6 + C2
for f CN
ac y to
eran
Pn
ide 6 6
io
c
grea se n 24 0
s 24 4
oil s
–2
Units of measurement
This catalogue is for global use. Therefore,
the predominant units of measurement are in
accordance with ISO 80000-1. Exceptionally,
imperial units are used when it is required by
the product. Unit conversions can be made
using the conversion table († page 8).
For easier use, temperature values are pro
vided in both, °C and °F. Temperature values
are typically rounded. Therefore, the two
values do not always exactly match when
u sing the conversion formula.
More SKF rolling bearings
Other rolling bearings, not presented in this
catalogue, include:
• super-precision bearings
• ball and roller bearing units
• fixed section ball bearings
• large deep groove ball bearings with filling
slots
• large angular contact thrust ball bearings
• tapered roller thrust bearings
• multi-row ball or roller bearings
• split roller bearings
• crossed tapered roller bearings
• slewing bearings
• linear ball bearings
• bearings for inline skates and skateboards
• backing bearings for cluster mills
• indexing roller units for continuous furnaces
of sintering plants
• application specific bearings for railway
rolling stock
• application specific bearings for cars and
trucks
• triple ring bearings for the pulp and paper
industry
• bearings for printing press rollers
• bearings for critical aerospace applications
For information about these products, contact
SKF or visit skf.com.
13
This is SKF
From one simple but inspired solution to a misalignment problem in a textile mill in Sweden,
and fifteen employees in 1907, SKF has grown
to become a global industrial knowledge leader.
Over the years we have built on our expertise in
bearings, extending it to seals, mechatronics,
services and lubrication systems. Our knowledge network includes 46 000 employees,
15 000 distributor partners, offices in more
than 130 countries, and a growing number of
SKF Solution Factory sites around the world.
Research and development
We have hands-on experience in over forty
industries, based on our employees’ knowledge
of real life conditions. In addition our worldleading experts and university partners who
pioneer advanced theoretical research and
development in areas including tribology, condition monitoring, asset management and bearing
life theory. Our ongoing commitment to research
and development helps us keep our customers
at the forefront of their industries.
SKF Solution Factory
makes SKF knowledge
and manufacturing
expertise available
locally, to provide unique
solutions and services to
our customers.
14
Meeting the toughest challenges
Our network of knowledge and experience
along with our understanding of how our core
technologies can be combined helps us create
innovative solutions that meet the toughest of
challenges. We work closely with our customers
throughout the asset life cycle, helping them to
profitably and responsibly grow their businesses.
Working for a sustainable future
Since 2005, SKF has worked to reduce the
negative environmental impact from our own
operations and those of our suppliers. Our continuing technology development introduced
the SKF BeyondZero portfolio of products and
services which improve efficiency and reduce
energy losses, as well as enable new technologies harnessing wind, solar and ocean power.
This combined approach helps reduce the
environmental impact both in our own operations and in our customers’.
Working with SKF IT and
logistics systems and
application experts, SKF
Authorized Distributors
deliver a valuable mix of
product and application
knowledge to customers
worldwide.
15
SKF – the knowledge
engineering company
Man
ufa
ctu
re
an
d
co
mm
an
dr
ep
air
Opera
te and monitor
Working closely with you
Our objective is to help our customers improve
productivity, minimize maintenance, achieve
higher energy and resource efficiency, and optimize designs for long service life and reliability.
Innovative solutions
Whether the application is linear or rotary or a
combination of the two, SKF engineers can work
with you at each stage of the asset life cycle to
improve machine performance by looking at the
16
an
all
Inst
d
ain
st
te
SKF Life Cycle
Management
ission
Design and develop
ion
at
t
in
Ma
SKF Life Cycle Management is how
we combine our technology platforms and advanced services, and
apply them at each stage of the
asset life cycle, to help our customers to be more successful,
sustainable and profitable.
Spe
cif
ic
Our knowledge
– your success
entire application. This approach doesn’t just
focus on individual components like bearings or
seals. It looks at the whole application to see
how each component interacts with the next.
Design optimization and verification
SKF can work with you to optimize current or
new designs with proprietary 3-D modeling
software that can also be used as a virtual test
rig to confirm the integrity of the design.
Bearings
SKF is the world leader in the design, development
and manufacture of high performance rolling bearings,
plain bearings, bearing units and housings.
Machinery maintenance
Condition monitoring technologies and maintenance
services from SKF can help minimize unplanned downtime, improve operational efficiency and reduce maintenance costs.
Sealing solutions
SKF offers standard seals and custom engineered sealing solutions to increase uptime, improve machine reliability, reduce friction and power losses, and extend
lubricant life.
Mechatronics
SKF fly-by-wire systems for aircraft and drive-by-wire
systems for off-road, agricultural and forklift applications replace heavy, grease or oil consuming mechanical
and hydraulic systems.
Lubrication solutions
From specialized lubricants to state-of-the-art
lubrication systems and lubrication management
services, lubrication solutions from SKF can help to
reduce lubrication related downtime and lubricant
consumption.
Actuation and motion control
With a wide assortment of products – from actuators
and ball screws to profile rail guides – SKF can work
with you to solve your most pressing linear system
challenges.
17
Principles of bearing
selection and application
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