 Technical Information
|
DETERMINING
PULLEY AND SHAFT DIAMETER
| When calculating horsepower, use
following charts to determine proper shaft and pulley diameter. This will ensure that the pulley and shaft that you select will be of the proper size (diameter) to adequately handle the loading and effective belt pull on the unit.
In Table I, use 180° arc of contact for end drives; 210° for center drives.
Multiply figure shown by belt width to find the
effective belt pull of a pulley. After calculating pulley diameter, shaft diameter must be determined.
Table II specifies effective belt pull rating for shafts at selected pulley face
width.
TABLE
I
|
PULLEY
DIAMETER
|
ARC OF CONTACT /
DRIVE
|
|
180° / END
|
210° / CENTER
|
|
4"
|
40# PIW BELT
|
28# PIW BELT
|
|
8"
|
85# PIW BELT
|
60# PIW BELT
|
|
12"
|
125# PIW BELT
|
90# PIW BELT
|
|
18"
|
230# PIW BELT
|
170# PIW BELT
|
|
24"
|
345# PIW BELT
|
250# PIW BELT
|
TABLE II
|
PULLEY
FACE
WIDTH
|
SHAFT DIAMETER
|
|
1-3/16"
|
1-7/16"
|
1-15/16"
|
2-7/16"
|
2-15/16"
|
|
12"
|
1000
|
1500
|
3700
|
6300
|
10600
|
|
14"
|
920
|
1500
|
3700
|
6300
|
10600
|
|
18"
|
670
|
1200
|
3700
|
6300
|
10600
|
|
20"
|
590
|
1100
|
3500
|
6300
|
10600
|
|
22"
|
530
|
950
|
3100
|
6300
|
10600
|
|
26"
|
440
|
790
|
2600
|
5600
|
10600
|
|
32"
|
350
|
620
|
2100
|
4400
|
9100
|
|
38"
|
290
|
510
|
1700
|
3700
|
7500
|
|
44"
|
240
|
440
|
1400
|
3100
|
6400
|
| 51" |
210 |
370 |
1200 |
2700 |
5500 |
|
57"
|
180
|
330
|
1100
|
2400
|
4900
|
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