Technical Reference

1.Radial Internal Clearance of Cylindrical Bore Bearings                           um

d(mm) Group 2 Basic Group Group3
Over Incl. Min. Max. Min. Max. Min. Max.
10 18 3 18 10 25 18 33
18 24 5 20 12 28 20 36
24 30 5 20 12 28 23 41
30 40 6 20 13 33 28 46
40 50 6 23 14 36 30 51
50 65 8 28 18 43 38 61
65 80 10 30 20 51 46 71
80 100 12 36 24 58 53 84
100 120 15 41 28 66 61 97
120 140 18 48 33 81 71 114

2.Outer Rings Tolerances                                                          um

D(mm) ¡÷dmp kea
Over Incl. High Low Max.
30 50 0 -11 20
50 80 0 -13 25
80 120 0 -15 35
120 150 0 -18 40
150 180 0 -25 45
180 250 0 -30 50

3.Cylindrical Bore of inner rings tolerances                                             um

D(mm) ¡÷dmp ¡÷ds Kia ¡÷Bs
Over Incl. High Low High Low Max. High Low
10 18 +18 0 +22 -4 12 0 -120
18 30 +21 0 +25 -4 15 0 -120
30 50 +25 0 +30 -5 18 0 -120
50 80 +30 0 +36 -6 22 0 -150
80 120 +35 0 +42 -7 28 0 -200
120 180 +40 0 +48 -8 35 0 -250

4.Mounting instructions
All TC inner rings with setscrews are specially heat-treated part of setscrew is well annealed. By this process distortion of the setscrew holes and threads well be avoided.

Setscrew Size recommended torque (max) Proof torque
in mm in-lbs kg-cm in-lbs kg-cm
1/4-28 M6X1 44 50 88 100
5/16-24 M8X1 97 110 158 180
3/8-24 M10X1.25 185 210 265 300

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