Timken Super Precision Bearings for Machine Tool Applications

ENGINEERING
A
PRECISION CLASS TAPERED ROLLER BEARINGS (EXCEPT HYDRA-RIB AND TXR BEARINGS)
SUGGESTED FITTING GUIDELINES FOR FERROUS SHAFT AND HOUSING
For heavy loads, high speed or shock, contact your Timken representative for further information.
SHAFT O.D. METRIC BEARINGS
(ISO and J Prefix)
Deviation from nominal (maximum) bearing
bore and resultant fit
T= Tight
L = Loose
Bearing bore
Class C
Range
Bearing bore
Shaft O.D.
Symbol
Over
Incl.
tolerance
deviation
Resultant fit
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
10.000 18.000 -0.007 k5 +0.009 0.016T
0.000 +0.001 0.001T
0.3937 0.7087 -0.0003 +0.0004 0.0006T
0.0000 +0.00004 0.00004T
18.000 30.000 -0.008 k5 +0.011 0.019T
0.000 +0.002 0.002T
0.7087 1.1811 -0.0003 +0.0005 0.0007T
0.0000 +0.0001 0.0001T
30.000 50.000 -0.010 k5 +0.013 0.023T
0.000 +0.002 0.002T
1.1811 1.9685 -0.0004 +0.0005 0.0009T
0.0000 +0.0001 0.0001T
50.000 80.000 -0.012 k5 +0.015 0.027T
0.000 +0.003 0.002T
1.9685 3.1496 -0.0005 +0.0006 0.0011T
0.0000 +0.0001 0.0001T
80.000 120.000 -0.015 k5 +0.018 0.033T
0.000 +0.003 0.003T
3.1496 4.7244 -0.0006 +0.0007 0.0013T
0.0000 +0.0001 0.0001T
120.000 180.000 -0.018 k5 +0.021 0.039T
0.000 +0.003 0.003T
4.7244 7.0866 -0.0007 +0.0008 0.0015T
0.0000 +0.0001 0.0001T
180.000 250.000 -0.022 k5 +0.024 0.046T
0.000 +0.004 0.004T
7.0866 9.8425 -0.0009 +0.0009 0.0018T
0.0000 +0.0002 0.0002T
250.000 315.000 -0.022 k5 +0.027 0.049T
0.000 +0.004 0.004T
9.8425 12.4016 -0.0009 +0.0011 0.0019T
0.0000 +0.0002 0.0002T
SHAFT O.D. INCH BEARINGS
Deviation from nominal (minimum) bearing
bore and resultant fit
T= Tight
L = Loose
Bearing bore Class 3 and 0 (1) Class 00 and 000
Range
Bearing bore
Bearing bore Shaft O.D.
Shaft O.D.
Resultant fit tolerance
Resultant fit
Over
Incl. tolerance deviation
deviation
μm (0.0001 in.)
mm
in.
mm
in.
mm
in.
mm
in.
– 304.800 0.000 +0.030 0.030T 0.000 +0.020 0.020T
+0.013 +0.018 0.005T +0.008 +0.013 0.005T
– 12.0000 0.0000 +0.0012 0.0012T 0.0000 +0.0008 0.0008T
+0.0005 +0.0007 0.0002T +0.0003 +0.0005 0.0002T
304.800 609.600 0.000 +0.064 0.064T – – –
+0.025 +0.038 0.013T
12.0000 24.0000 0.0000 +0.0025 0.0025T – – –
+0.0010 +0.0015 0.0005T
609.600 914.400 0.000 +0.102 0.102T – – –
+0.038 +0.064 0.026T
24.0000 36.0000 0.0000 +0.0040 0.0040T – – –
+0.0015 +0.0025 0.0010T
mm
in.
mm
in.
(1) Class O made only to 304.800 mm (12.0000 in.) O.D.
84 TIMKEN MACHINE TOOL CATALOG