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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
0.49
11.6
23.4
16000
24000
6305
25
62
17
SANS 1313-1
0.655
15.3
27
13000
20000
6207
35
72
17
0.31
7.35
11.9
17000
28000
16006
30
55
9
0.815
19
35.1
12000
19000
6307 M
35
80
21
SANS 1313-1
1.02
24
42.3
11000
17000
6308
40
90
23
SANS 1313-1
0.67
16
29.6
13000
20000
6306
30
72
19
SANS 1313-1
0.44
10.2
16.8
15000
24000
6007
35
62
14
0.44
10.2
13.8
14000
22000
16008
40
68
9
0.375
8.15
13
15000
24000
16007
35
62
9
0.335
7.8
14.8
18000
28000
6205
25
52
15
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
0.275
6.55
11.9
20000
32000
6005
25
47
12
0.212
4.75
8.06
20000
32000
16005
25
47
8
0.815
19
35.1
12000
19000
6307
35
80
21
SANS 1313-1
0.212
5
9.95
24000
38000
6004
20
42
12
0.173
4.05
7.28
24000
38000
16004
20
42
8
0.8
19
32.5
11000
18000
6208
40
80
18


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