| This is a general guide. If in doubt, check
with the engineered ratings of the belt manufacturer. If the pulley
diameter estimates are requested for a certain belt, a drive or head pulley diameter
estimate can be taken from the 80%-100% tension column. Take-up and tail pulley diameter
estimate can be taken from the 40%-6-% classification. For snub pulleys, choose minimum
diameter based on belt tension. If wrap is less that 6”, the pulley may be decreased
to the next smaller standard diameter. |
|
Table C |
|
|
Multiple Ply Fabrics |
MP 35
MP 43
MP 50 |
|
% Normal Belt Tension |
Number of Plies |
80 to 100% |
60 to 80% |
40 to 60% |
Under 40% |
3 |
14 |
12 |
10 |
10 |
4 |
20 |
16 |
14 |
12 |
5 |
24 |
20 |
16 |
14 |
6 |
30 |
24 |
20 |
18 |
7 |
30 |
24 |
24 |
20 |
8 |
30 |
30 |
24 |
24 |
9 |
42 |
36 |
30 |
24 |
10 |
48 |
42 |
30 |
30 |
|
| |
| |
Multiple Ply Fabrics |
MP 60
MP 70 |
|
% Normal Belt Tension |
Number of Plies |
80 to 100% |
60 to 80% |
40 to 60% |
Under 40% |
3 |
16 |
14 |
12 |
10 |
4 |
24 |
18 |
16 |
14 |
5 |
24 |
24 |
20 |
18 |
6 |
30 |
30 |
24 |
20 |
7 |
36 |
30 |
24 |
24 |
8 |
42 |
36 |
30 |
30 |
9 |
48 |
42 |
30 |
30 |
10 |
54 |
42 |
36 |
36 |
|
| |
| |
Multiple Ply Fabrics |
MP 90
MP 120 |
|
% Normal Belt Tension |
Number of Plies |
80 to 100% |
60 to 80% |
40 to 60% |
Under 40% |
3 |
18 |
16 |
12 |
12 |
4 |
24 |
20 |
16 |
16 |
5 |
30 |
24 |
20 |
18 |
6 |
36 |
30 |
30 |
24 |
7 |
42 |
36 |
30 |
30 |
8 |
48 |
42 |
36 |
30 |
9 |
54 |
48 |
42 |
36 |
10 |
60 |
48 |
42 |
36 |
|
| |
| |
Multiple Ply Fabrics |
MP 155 |
|
% Normal Belt Tension |
Number of Plies |
80 to 100% |
60 to 80% |
40 to 60% |
Under 40% |
3 |
- |
- |
- |
- |
4 |
30 |
24 |
16 |
16 |
5 |
36 |
30 |
30 |
24 |
6 |
42 |
36 |
30 |
30 |
7 |
48 |
42 |
36 |
30 |
8 |
54 |
48 |
42 |
36 |
9 |
60 |
54 |
48 |
42 |
10 |
66 |
60 |
48 |
42 |
|
| |
| |
Multiple Ply Fabrics |
MP 195
MP 240 |
|
% Normal Belt Tension |
Number of Plies |
80 to 100% |
60 to 80% |
40 to 60% |
Under 40% |
3 |
- |
- |
- |
- |
4 |
36 |
30 |
24 |
20 |
5 |
42 |
36 |
30 |
34 |
6 |
48 |
42 |
36 |
30 |
7 |
60 |
48 |
42 |
36 |
8 |
66 |
60 |
48 |
42 |
9 |
78 |
66 |
54 |
48 |
10 |
84 |
72 |
60 |
54 |
|
| |
| |
Reduced Ply Fabrics Tension
Rating by Ply |
75#/Ply |
|
% Normal Belt Tension |
Number of Plies |
80 to 100% |
60 to 80% |
40 to 60% |
Under 40% |
2 |
16 |
14 |
12 |
10 |
3 |
20 |
18 |
16 |
14 |
4 |
24 |
20 |
18 |
16 |
5 |
30 |
30 |
24 |
20 |
6 |
36 |
36 |
30 |
30 |
|
| |
| |
Reduced Ply Fabrics Tension
Rating by Ply |
105#/Ply |
|
% Normal Belt Tension |
Number of Plies |
80 to 100% |
60 to 80% |
40 to 60% |
Under 40% |
2 |
18 |
16 |
12 |
10 |
3 |
24 |
20 |
18 |
16 |
4 |
30 |
24 |
20 |
18 |
5 |
36 |
30 |
30 |
24 |
6 |
48 |
42 |
36 |
30 |
|
| |
| |
Reduced Ply Fabrics Tension
Rating by Ply |
125#/Ply |
|
% Normal Belt Tension |
Number of Plies |
80 to 100% |
60 to 80% |
40 to 60% |
Under 40% |
2 |
24 |
20 |
14 |
12 |
3 |
30 |
24 |
18 |
16 |
4 |
36 |
30 |
24 |
20 |
5 |
42 |
36 |
30 |
24 |
6 |
48 |
42 |
36 |
30 |
|
| |
| |
Reduced Ply Fabrics Tension
Rating by Ply |
150#/Ply |
|
% Normal Belt Tension |
Number of Plies |
80 to 100% |
60 to 80% |
40 to 60% |
Under 40% |
2 |
24 |
24 |
16 |
14 |
3 |
36 |
30 |
24 |
20 |
4 |
42 |
36 |
30 |
24 |
5 |
48 |
42 |
36 |
30 |
6 |
54 |
48 |
42 |
36 |
|
| |
