Technical Reference
1. Radial Internal Clearance of Cylindrical Bore Bearings
| 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
| D(mm) |
Δdmp |
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
| D(mm) |
Δdmp |
Δds |
Kia |
ΔBs |
| 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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