certific at e - NOC international

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Assembling roller bearings
Maximum edge distances for metric tapered roller bearings according to ISO 355
Minimum sizes Nominal sizes of bearing bore
and outside diameter
r s min
d, D
over up to
Maximum sizes
r 1s , r 3s
max
r 2s , r 4s
max
[mm] [mm] [mm] [mm] [mm]
1 -
50
1,5 -
120
250
2 -
120
250
2,5 -
120
250
3 -
120
250
400
4 -
120
250
400
5 -
180
6 -
180
50
-
120
250
-
120
250
-
120
250
-
120
250
400
-
120
250
400
-
180
-
180
-
The edge radii of the shaft and housing must be dimensioned in such a way that no contact or pressing force is in
the area of the edge radii. Otherwise this could lead to premature failure of the roller bearing.
The Edge Radii for Roller Bearings and Shaft and Housing Seats table shows the allocation of the smallest possible
roller bearing radius and largest possible shaft or housing radius against the diameter series of the roller bearings. If
recesses are possible, then their dimensions must also be taken from the table. The meaning of the dimension symbols
is shown in the diagrams.
Edge radii for roller bearings and shaft and housing seats
Radius for
bearings
r s
Shaft and housing
r as ; r bs
Shoulder height h min. for diameter series
acc. to DIN 616
min max 8, 9, 0 1, 2, 3 4
0,1
0,15
0,2
0,3
0,6
1
1,1
1,5
2
2,1
3
4
5
6
7,5
9,5
12
15
0,1
0,15
0,2
0,3
0,6
1
1
1,5
2
2,1
2,5
3
4
5
6
8
10
12
0,3
0,4
0,7
1
1,6
2,3
3
3,5
4,4
5,1
6,2
7,3
9
11,5
14
17
21
25
0,6
0,7
0,9
1,2
2,1
2,8
3,5
4,5
5,5
6
7
8,5
10
13
16
20
24
29
4,5
5,5
6,5
7
8
10
12
15
19
23
28
33
1,6
1,9
2,3
2,8
3,5
2,8
3,5
4
3,5
4
4,5
4
4,5
5
5,5
5
5,5
6
6,5
6,5
7,5
7,5
9
2,5
3
3
3,5
4
4
4,5
5
5
5,5
6
5,5
6,5
7
7,5
7
7,5
8
8,5
8
9
10
11