
PU Round Belt
Product Introduction
We also have a number of experienced staff with rich professional knowledge and many years of production and management experience, so that our Semi Feeding Harvester V Belts, Agricultural Harvester V Belts, Cotton CC Conveyor Belts are constantly improving. Our corporate slogan: reputation comes from quality, our corporate philosophy: people-oriented, to achieve a win-win situation. In the long run, our world-class goal is the direction guide to build a global company and achieve global leadership. We are constantly developing new varieties and actively expanding our market share.
RoyalCorp Polyurethane V Belts and Round Belts can be manufactured in any size from .062" (1.57mm) through .562" (14.27mm) in cross section. We manufacture belts in fractional, decimal and millimeter equivalents as well as O-ring size cross sections. The Polyurethane V Belts and Round Belts size is designated by length rather than inside diameter. Our minimum length is 3-3/4" (95.25mm) in small cross sections. Larger cross section belts will have somewhat longer minimum lengths. There is no maximum length limitation on the Pyrathane® round belt.
Round cross section belts will run satisfactorily in either vee or round bottom pulleys. Vee bottom pulleys will, however, provide a much more positive drive than will round bottom pulleys because of the wedging action of the round belts in the vee pulley. Vee bottom pulleys should be designed with approximately a 36 degree inclusive angle and should be deep enough so that the belt will not run on the bottom. See Figure 1.
Round bottom pulleys may allow slippage in higher load situations which may or may not be desirable. Round bottom pulleys should be designed with a radius that matches the cross section of the belt being used. See Figure 2.
We generally recommend the Pyrathane® belt be run under tensionhowever, some applications may run satisfactorily when just the slack is taken up (under very little tension). An example would be when running in a vee groove where the wedging effect provides the driving grip.
Round Cord Cross Sectional Sizes with Round Belt Minimum Lengths and Minimum Inside Diameters
|
Cross Section of Cord |
Minimum Belt Lengths |
Minimum Belt I.D. | |||||||||||
|
For 83A Durometer Materials |
For 70A Durometer Material |
For 92A Durometer Materials |
For 83A Durometer Materials |
For 70A Durometer Material |
For 92A Durometer Materials | ||||||||
|
Inches |
MM |
Inches |
MM |
Inches |
MM |
Inches |
MM |
Inches |
MM |
Inches |
MM |
Inches |
MM |
|
.062 |
- |
3.75 |
95.25 |
3.75 |
95.25 |
3.75 |
95.25 |
1.132 |
28.744 |
1.132 |
28.744 |
1.132 |
28.744 |
|
.070 |
- |
3.75 |
95.25 |
3.75 |
95.25 |
3.75 |
95.25 |
1.124 |
28.541 |
1.124 |
28.541 |
1.124 |
28.541 |
|
.078 |
2 |
3.75 |
95.25 |
3.75 |
95.25 |
3.75 |
95.25 |
1.116 |
28.338 |
1.116 |
28.338 |
1.116 |
28.338 |
|
.093 |
- |
3.75 |
95.25 |
3.75 |
95.25 |
3.75 |
95.25 |
1.101 |
27.957 |
1.101 |
27.957 |
1.101 |
27.957 |
|
.100 |
2.5 |
3.75 |
95.25 |
3.75 |
95.25 |
3.75 |
95.25 |
1.094 |
27.779 |
1.094 |
27.779 |
1.094 |
27.779 |
|
.103 |
- |
3.75 |
95.25 |
3.75 |
95.25 |
3.75 |
95.25 |
1.091 |
27.703 |
1.091 |
27.703 |
1.091 |
27.703 |
|
.118 |
3 |
3.75 |
95.25 |
3.75 |
95.25 |
3.75 |
95.25 |
1.076 |
27.332 |
1.076 |
27.332 |
1.076 |
27.332 |
|
.125 |
- |
3.75 |
95.25 |
3.75 |
95.25 |
3.75 |
95.25 |
1.069 |
27.144 |
1.069 |
27.144 |
1.069 |
27.144 |
|
.139 |
- |
3.75 |
95.25 |
3.75 |
95.25 |
3.75 |
95.25 |
1.055 |
26.788 |
1.055 |
26.788 |
1.055 |
26.788 |
|
.157 |
4 |
4.00 |
101.60 |
4.00 |
101.60 |
4.00 |
101.60 |
1.116 |
28.353 |
1.116 |
28.353 |
1.116 |
28.353 |
|
.187 |
4.75 |
4.50 |
114.30 |
4.5 |
114.30 |
4.5 |
114.30 |
1.245 |
31.633 |
1.245 |
31.633 |
1.245 |
31.633 |
|
.197 |
5 |
4.50 |
114.30 |
4.50 |
114.30 |
4.75 |
120.650 |
1.235 |
31.379 |
1.235 |
31.379 |
1.315 |
33.400 |
|
.210 |
- |
4.75 |
120.65 |
4.75 |
120.65 |
4.75 |
120.65 |
1.302 |
33.070 |
1.302 |
33.070 |
1.302 |
33.070 |
|
.218 |
5.5 |
4.75 |
120.65 |
4.75 |
120.65 |
4.75 |
120.65 |
1.294 |
32.867 |
1.294 |
32.867 |
1.294 |
32.867 |
|
.236 |
6 |
5.00 |
127.00 |
5.00 |
127.00 |
5.00 |
127.00 |
1.356 |
34.431 |
1.356 |
34.431 |
1.356 |
34.431 |
|
.250 |
- |
5.00 |
127.00 |
5.00 |
127.00 |
5.00 |
127.00 |
1.342 |
34.075 |
1.342 |
34.075 |
1.342 |
34.075 |
|
.274 |
7 |
5.50 |
139.70 |
5.50 |
139.70 |
5.75 |
146.05 |
1.477 |
37.508 |
1.477 |
37.508 |
1.556 |
39.530 |
|
.312 |
8 |
6.00 |
152.40 |
6.00 |
152.40 |
6.00 |
152.40 |
1.598 |
40.586 |
1.598 |
40.586 |
1.598 |
40.586 |
|
.375 |
- |
7.50 |
190.50 |
7.50 |
190.50 |
7.50 |
190.50 |
2.012 |
51.113 |
2.012 |
51.113 |
2.012 |
51.113 |
|
.437 |
11 |
8.50 |
215.90 |
8.50 |
215.90 |
8.50 |
215.90 |
2.269 |
57.623 |
2.269 |
57.623 |
2.269 |
57.623 |
|
.500 |
- |
9.25 |
234.95 |
9.25 |
234.95 |
9.50 |
241.30 |
2.444 |
6.087 |
2.444 |
6.087 |
2.524 |
64.108 |
|
.562 |
- |
12.00 |
304.80 |
12.00 |
304.80 |
13.50 |
342.90 |
3.258 |
82.746 |
3.258 |
82.746 |
3.735 |
94.874 |
Minimum Pulley Diameter Recommendations
|
Belt Cross Section |
83A |
92A |
|
.139" and smaller |
.375" |
.500" |
|
.156" |
.500" |
.750" |
|
.187" & .197"" |
1.00" |
1.250" |
|
.218" |
1.250" |
1.500" |
|
.236" |
1.250" |
1.750" |
|
.250" |
1.500" |
2.250" |
|
.312" |
2.000" |
3.000" |
|
.500" |
3.000" |
4.000" |
Polyurethane V Belts Dimension
|
Belt Type |
Width(dp) mm |
Top Wdith (b) mm |
Height mm |
Angle (a) |
Length Range |
Inch |
|
8 |
7.5 |
8 |
5 |
40 |
380~15000 |
15"~590" |
|
Z |
9.5 |
10 |
7 |
40 |
||
|
A |
11 |
13 |
8 |
40 |
||
|
B |
14 |
17 |
11 |
40 |
||
|
C |
19 |
22 |
14 |
40 |




We always adhere to the brand concept of the belief of making good PU Round Belt, and have won wide recognition from all walks of life. We hope to make new contributions in the journey of promoting social progress and realizing national rejuvenation. We will provide the best quality and service to our customers with the highest efficiency. We wish to join hands with all people from all walks of life to create brilliance together!
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