THE WORLD OF TIMING BELTS - MAELabs UCSD

Table 46 Rated Torque (oz⋅in) for Small Pulleys — 1/8" Top Width
The following table represents the torque ratings for each belt in its base width at
the predetermined number of grooves, pitch diameters and rpm's. These ratings
must be multiplied by the appropriate width factor to obtain the corrected torque
rating (see Step 7 of SECTION 24, on page T-146).
No. of Grooves
Pitch
Diameter
rpm
of
Fastest
Shaft
mm
in
10
100
1000
2000
2500
3000
3500
5000
8000
10000
12000
10
6.48
.255
4.61
4.61
4.61
4.61
4.61
4.61
4.61
4.61
4.60
4.59
4.59
11
7.11
.280
5.06
5.06
5.06
5.06
5.06
5.06
5.06
5.06
5.05
5.04
5.03
12
7.77
.306
5.53
5.53
5.53
5.53
5.53
5.53
5.53
5.53
5.52
5.51
5.49
14
9.07
.357
6.45
6.45
6.45
6.45
6.45
6.45
6.45
6.44
6.43
6.41
6.39
15
9.70
.382
6.91
6.91
6.91
6.90
6.90
6.90
6.90
6.89
6.87
6.85
6.83
16
10.34
.407
7.36
7.36
7.36
7.36
7.35
7.35
7.35
7.34
7.32
7.30
7.27
Belt Width (in)
Width Multiplier
18
11.63
.458
8.28
8.28
8.28
8.28
8.28
8.27
8.27
8.26
8.22
8.19
8.15
20
12.93
.509
9.20
9.20
9.20
9.20
9.20
9.19
9.19
9.17
9.12
9.08
9.03
21
13.59
.535
9.67
9.67
9.67
9.67
9.66
9.66
9.66
9.64
9.58
9.53
9.47
1/8
1.00
22
14.22
.560
10.10
10.10
10.10
10.10
10.10
10.10
10.10
10.10
10.00
9.96
9.98
24
15.52
.611
11.0
11.0
11.0
11.0
11.0
11.0
11.0
11.0
10.9
10.8
10.7
3/16
1.66
28
18.11
.713
12.9
12.9
12.9
12.9
12.9
12.9
12.8
12.8
12.7
12.6
12.4
1/4
2.33
30
19.41
.764
13.8
13.8
13.8
13.8
13.8
13.8
13.8
13.7
13.5
13.4
13.2
MXL (.080 in) Belts
32
20.70
.815
14.7
14.7
14.7
14.7
14.7
14.7
14.7
14.6
14.4
14.2
14.0
5/16
2.84
36
23.29
.917
16.6
16.6
16.6
16.6
16.5
16.5
16.5
16.4
16.1
15.9
15.5
3/8
3.50
7/16
4.18
1/2
4.86
40 42 44 48 60
25.88 27.18 28.45 31.04 38.81
1.019 1.070 1.120 1.222 1.528
18.4 19.3 20.2 22.1 27.6
18.4 19.3 20.2 22.1 27.6
18.4
18.4
19.3
19.3
20.2
20.2
22.1
22.0
27.6
27.5
18.4 19.3 20.2 22.0 27.4
18.3 19.2 20.1 21.9 27.3
18.3 19.2 20.1 21.9 27.2
18.2
17.8
19.1
18.6
19.9
19.4
21.7
21.0
26.8
25.5
17.4 18.2 18.9 20.4 24.3
17.0 17.7 18.4 19.6 22.8