Machinery's Handbook, 31st Edition
2456
Ball and Roller Bearings Table 4. ABEC-5 and RBEC-5 Tolerance Limits for Metric Ball and Roller Bearings ANSI/ABMA 20-1987 INNER RING
Width
Ref. Face Runout with Bore S d
Inner Ring Bore Basic Dia., d mm
Axial Runout S ia c
Radial Runout K ia
V dp , a max Diameter Series
V Bs e
Δ dmp b
Δ Bs d
Over
Incl. 7, 8, 9 0, 1, 2, 3, 4 High Low max
max
max All Normal Modified f max
2.5 10 18 30 50
10 18 30 50 80
5 5 6 8 9
4 4 5 6 7 8
0 0 0 0 0 0 0 0
4 4 4 5 5
7 7 8 8 8 9
7 7 8 8 8 9
0 0 0 0 0 0
5 5 5 5 6 7 8
− 5 − 5 − 6 − 8 − 9
− 40 − 80
− 250 − 250 − 250 − 250 − 250 − 380 − 380
− 120 − 120 − 150 − 200 − 250 − 300
80 120 10 120 180 13 180 250 15
− 10 6 − 13 8 − 15 10
10 12
10 11
10 0 13 0
− 500 10
a Bore ( V dp ) and outside diameter ( V Dp ) variation in a single radial plane. cally tapered bore, ∆ dmp refers only to the theoretical small end of the bore.) c Axial runout of assembled bearing with inner ring S b Single plane mean bore (∆ Bs ) and outer ( V Cs ) ring width deviation from basic. f Applies to the rings of single bearings made for paired or stack mounting. OUTER RING only. d Single bore (∆ e Inner ( V Bs ) and outer ring (∆ Cs ) width variation.
dmp ) and outside diameter (∆ Dmp ) deviation from basic. (For a basi-
ia . Applies to groove-type ball bearings
Width
Outside Cylindrical Surface Runout S D d
Basic Outer Ring Outside Dia., D mm
Axial Runout S ea e
Radial Runout K ea
V Dp , a, b max Diameter Series
V Cs g
Δ Dmp c
Δ Cs f
Over
Incl.
7, 8, 9 0, 1, 2, 3, 4 High Low max
max
max High Low max
5 5 5 6 8 8 8
6
18 30 50 80
5 6 7 9
4 5 5 7 8 8
0 0 0 0 0 0 0 0
5 6 7 8
8 8 8 8 9
8 8 8
− 5 − 6 − 7 − 9
18 30 50 80
Identical to Δ Bs of inner ring
10 11 13 14 15
120 150 180 250
10 11 13 15
10 11 13 15
− 10 − 11 − 13 − 15
of same bearing
120 150 180
10 10 11
10 11
10
a Bore ( V
dp ) and outside diameter ( V Dp ) variation in a single radial plane.
b No values have been established for capped bearings. c Single plane mean bore (∆ dmp ) and outside diameter (∆ Dmp ) deviation from basic. (For a basi- cally tapered bore, ∆ dmp refers only to the theoretical small end of the bore.) d Outside cylindrical surface runout with outer ring reference face S D e Axial runout of assembled bearing with outer ring S ea . f Single bore (∆ Bs ) and outer ring (∆ Cs ) width variation. g Inner ( V Bs ) and outer ( V Cs ) ring width deviation from basic. All units are micrometers, unless otherwise indicated. For sizes beyond range of this table, see Standard. This table does not cover instrument bearings and tapered roller bearings.
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online