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Bearing inspection
Maximum permissible increase in bearing clearance (uniform wear)
These increases in bearing clearance are not permissible for special applications, e.g. 50 % of the listed
values for fairground ride slewing bearings (contact ThyssenKrupp Rothe Erde).
Table 4: BF* 01, 08 (double-row ball bearings/axial ball bearings)
Measuring method
Axial reduction measurement
Tilting clearance measurement
*BF = design type (see www.thyssenkrupp-rotheerde.com)
Table 5: BF* 06, 09, 25, 23, 28 (ball bearings/profi le bearings)
Measuring method
Axial reduction measurement
Tilting clearance measurement
*BF = design type (see www.thyssenkrupp-rotheerde.com)
Table 6: BF* 12, 13, 19 (roller bearing slewing rings)
Measuring method
Axial reduction measurement
Tilting clearance measurement
*BF = design type (see www.thyssenkrupp-rotheerde.com)
Ball diameter mm
18
20
22
25
30
max. permissible wear values up to mm
1.8
2.2
2.5
3.0
20
22
25
max. permissible wear values up to mm
1.6
2.0
Roller diameter mm
16 20 25 28 32 36 40 45 50 60 70 80 90 100
max. permissible wear values up to mm
0.8
1.2
1.4
2.0
35
40
45
50
60
3.0
3.8
4.0
5.0
Ball diameter mm
30
35
40
45
50
2.0
2.6
2.6
3.2
1.6
2.0
2.4
2.8
3.5
4.2
Inspecting the gearing
Gear teeth become smoothed and worn in
the course of use. A permissible wear limit
depends very much on the application.
Experience indicates that a wear value of
up to 0.1 x module per fl ank is permissible.
®
70
60
70
3.3
4.0
13
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