ball and roller bearings - NTN Bearing Corporation of America
ball and roller bearings - NTN Bearing Corporation of America
ball and roller bearings - NTN Bearing Corporation of America
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TOLERANCE<br />
TABLES<br />
BASIC BORE DIAMETER<br />
d<br />
SINGLE SINGLE<br />
RADIAL PLANE<br />
PLANE BORE MEAN BORE<br />
DIAMETER DIAMETER<br />
VARIATION DEVIATIONS<br />
Vdp Vdmp Radial<br />
RUNOUT<br />
Reference<br />
Side<br />
With<br />
Bore<br />
Raceway<br />
With<br />
Reference<br />
Side �<br />
WIDTH<br />
Allowable Deviations from B<br />
Normal � Modified<br />
Single Single<br />
<strong>Bearing</strong>s <strong>Bearing</strong>s<br />
Variation<br />
<strong>of</strong> Bs in<br />
Individual<br />
Ring<br />
Over<br />
mm<br />
Incl.<br />
inch<br />
Over Incl. Max Max<br />
Kia Max.<br />
Sd Max.<br />
Sia Max. High<br />
Bs Low High<br />
Bs Low<br />
VBs Max.<br />
.6 10 .0236 .3937 1 .5 .5 .5 .5 + 0 - 10 + 0 - 100 .5<br />
10 18 .3937 .7087 1 .5 .5 .5 .5 + 0 - 32 + 0 - 100 .5<br />
18 30 .7087 1.1811 1 .5 1.0 .5 1.0 + 0 - 50 + 0 - 100 .5<br />
30 50 1.1811 1.9685 1 .5 1.0 .5 1.0 + 0 - 50 + 0 - 100 .5<br />
50 80 1.9685 3.1496 1.5 1 1.0 .5 1.0 + 0 - 60 + 0 - 100 .5<br />
80 120 3.1496 4.7244 2 1 1.0 1.0 1.0 + 0 - 80 + 0 - 150 1.0<br />
120 150 4.7244 5.9055 3 1.5 1.0 1.0 1.0 + 0 - 100 + 0 - 150 1.0<br />
150 180 5.9055 7.0866 3 1.5 2.0 1.5 2.0 + 0 - 120 + 0 - 200 1.5<br />
180 250 7.0866 9.8425 3 1.5 2.0 1.5 2.0 + 0 - 140 + 0 - 200 1.5<br />
258<br />
INNER RING<br />
SINGLE RADIAL PLANE OUTSIDE RUNOUT WIDTH<br />
BASIC OUTSIDE DIAMETER DIAMETER VARIATION<br />
D<br />
Radial Outside Raceway Variation<br />
Cylindrical with Limits <strong>of</strong> B s in<br />
Surface with Reference Individual<br />
Reference Side � Ring<br />
V Dp � V dmp Side �<br />
Over<br />
mm<br />
Incl.<br />
inch<br />
Over Incl.<br />
Max Kea Max.<br />
SD Max.<br />
Sea Max.<br />
VBs Max.<br />
2.5 18 .0984 .7087 1 .5 .5 .5 .5 .5<br />
18 30 .7087 1.1811 1.5 1 1.0 .5 1.0 Identical to<br />
.5<br />
30 50 1.1811 1.9685 1.5 1 1.0 .5 1.0 .5<br />
50<br />
80<br />
80<br />
120<br />
1.9685<br />
3.1496<br />
3.1496<br />
4.7244<br />
1.5<br />
2<br />
1<br />
1<br />
1.5<br />
2.0<br />
.5<br />
1.0<br />
1.5<br />
2.0<br />
those <strong>of</strong><br />
.5<br />
1.0<br />
120<br />
150<br />
150<br />
180<br />
4.7244<br />
5.9055<br />
5.9055<br />
7.0866<br />
2<br />
3<br />
1<br />
1.5<br />
2.0<br />
2.0<br />
1.0<br />
1.0<br />
2.0<br />
2.0<br />
inner ring<br />
1.0<br />
1.0<br />
180<br />
250<br />
250<br />
315<br />
7.0866<br />
9.8425<br />
9.8425<br />
12.4015<br />
3<br />
3<br />
1.5<br />
1.5<br />
2.5<br />
2.5<br />
1.5<br />
1.5<br />
2.5<br />
2.5 <strong>of</strong> the same<br />
1.5<br />
1.5<br />
315 400 12.4015 15.7480 4 2 3.0 2.5 3.0<br />
bearing<br />
2.5<br />
� Applies to <strong>bearings</strong> <strong>of</strong> metric width series 1 or narrower.<br />
� Does not apply to self-aligning <strong>ball</strong> <strong>bearings</strong>.<br />
� This refers to a <strong>ball</strong> bearing on which one or both sides are modified so two or more <strong>bearings</strong> can be mounted side by side as a unit.<br />
� These limits apply before seals or shields are inserted.<br />
� For Instrument Ball <strong>Bearing</strong> tolerances see AFBMA St<strong>and</strong>ard 12, ANSI B3.10.<br />
� No values have been established for capped <strong>bearings</strong>.<br />
TOLERANCE CLASS ABEC-9<br />
Tolerance limits for:<br />
Metric radial <strong>and</strong> angular contact <strong>ball</strong> <strong>bearings</strong> (except instrument <strong>bearings</strong> �).<br />
Table 4 (Tolerance Limits in 0.0001 inch)<br />
OUTER RING
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