Timken Super Precision Bearings for Machine Tool Applications

Appendix
PRECISION TAG DEVIATION
AND RUNOUT CHARTS
TAPERED ROLLER BEARINGS
Bearing tag markings include indication of bearing accuracy,
which can assist with selective assembly and installation. Refer
to diagrams on page 107.
METRIC SYSTEM
Class Designation no. Deviation
mm
Over Incl.
in.
Over Incl.
Class Designation no. Deviation
mm
Over Incl.
in.
Over
Incl.
-2 0.000 to -0.002 0.0000 to -0.0001
2 0.000 to 0.002 0.0000 to 0.0001
-4 -0.002 to -0.004 -0.0001 to -0.0002
4 0.002 to 0.004 0.0001 to 0.0002
-8 -0.004 to -0.008 -0.0002 to -0.0003
8 0.004 to 0.008 0.0002 to 0.0003
-12 -0.008 to -0.012 -0.0003 to -0.0004
12 0.008 to 0.012 0.0003 to 0.0004
All
-16 -0.012 to -0.016 -0.0004 to -0.0006
-20 -0.016 to -0.020 -0.0006 to -0.0008
-25 -0.020 to -0.025 -0.0008 to -0.0010
-30 -0.025 to -0.030 -0.0010 to -0.0012
C & B
16 0.012 to 0.016 0.0004 to 0.0006
20 0.016 to 0.020 0.0006 to 0.0008
25 0.020 to 0.025 0.0008 to 0.0010
30 0.025 to 0.030 0.0010 to 0.0012
AD
-35 -0.030 to -0.035 -0.0012 to -0.0014
35 0.030 to 0.035 0.0012 to 0.0014
-40 -0.035 to -0.040 -0.0014 to -0.0016
40 0.035 to 0.040 0.0014 to 0.0016
-45 -0.040 to -0.045 -0.0016 to -0.0018
45 0.040 to 0.045 0.0016 to 0.0018
-50 -0.045 to -0.050 -0.0018 to -0.0020
50 0.045 to 0.050 0.0018 to 0.0020
-55 -0.050 to -0.055 -0.0020 to -0.0022
55 0.050 to 0.055 0.0020 to 0.0022
-60 -0.055 to -0.060 -0.0022 to -0.0024
60 0.055 to 0.060 0.0022 to 0.0024
-65 -0.060 to -0.065 -0.0024 to -0.0026
65 0.060 to 0.065 0.0024 to 0.0026
-70 -0.065 to -0.070 -0.0026 to -0.0028
70 0.065 to 0.070 0.0026 to 0.0028
-75 -0.070 to -0.075 -0.0028 to -0.0030
75 0.070 to 0.075 0.0028 to 0.0030
-80 -0.075 to -0.080 -0.0030 to -0.0031
80 0.075 to 0.080 0.0030 to 0.0031
A actual amount 0.0000 to 0.0019 0.00000 to 0.000075
AA actual amount 0.0000 to 0.0010 0.00000 to 0.00004
A
TIMKEN MACHINE TOOL CATALOG 237