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Idler Bearings
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Idler life is a function of many factors, such as belt speed, shell thickness, seals, and bearings. The idler load and rating of a bulk material handling belt conveyor system depend on the rating of the bearing. The table below covers standard-bearing dimensions used on typical conveyor idlers.


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Pu (kN) (kN) C0 (kN) (kN) C (kN) (kN) Limiting speed r/min (r/min) Reference speed r/min (r/min) Designation d - shaft series (mm) (mm) D (mm) (mm) B (mm) (mm) Applicable Standards
0.28
6.55
13.5
20000
32000
6204
20
47
14
0.335
7.8
16.8
19000
30000
6304
20
52
15
0.49
11
17.8
14000
22000
6008
40
68
15
0.212
5
9.95
24000
38000
6004
20
42
12
0.49
11.6
23.4
16000
24000
6305
25
62
17
SANS 1313-1
0.355
8.3
13.8
17000
28000
6006
30
55
13
0.475
11.2
20.3
15000
24000
6206
30
62
16
SANS 1313-1
0.173
4.05
7.28
24000
38000
16004
20
42
8
0.275
6.55
11.9
20000
32000
6005
25
47
12
0.67
16
29.6
13000
20000
6306
30
72
19
SANS 1313-1
0.655
15.3
27
13000
20000
6207
35
72
17
0.44
10.2
16.8
15000
24000
6007
35
62
14
0.44
10.2
13.8
14000
22000
16008
40
68
9
0.212
4.75
8.06
20000
32000
16005
25
47
8
0.31
7.35
11.9
17000
28000
16006
30
55
9
0.375
8.15
13
15000
24000
16007
35
62
9
0.815
19
35.1
12000
19000
6307
35
80
21
SANS 1313-1
0.815
19
35.1
12000
19000
6307 M
35
80
21
SANS 1313-1
0.8
19
32.5
11000
18000
6208
40
80
18
1.02
24
42.3
11000
17000
6308
40
90
23
SANS 1313-1
0.335
7.8
14.8
18000
28000
6205
25
52
15
SANS 1313-1


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