

Volta Belting PU Round Belts
Round section from 80-100° ‘A’. FDA/USDA grades availability.
Round Belts 1 – Sizes & Properties | |||||
RFC | RL/RLC | RLW | RO | ROS | |
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Hardness | 76 A | 80 A | 80 A | 83 A | 83 A |
USDA/FDA | No | Yes | Yes | Yes | Yes |
Temp. range | -40/+50°C | -40/+55°C | -40 /+55°C | -40/+55°C | -40/+55°C |
Coeff. friction (Steel) | 0.65 | 0.55 | 0.55 | 0.55 | 0.55 |
Diameter mm (inch) | Min. pulley dia. ( mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg. |
2 | – | – | 15 | 0.06 | – | – | 15 | 0.06 | – | – |
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3(1/18) | – | – | 20 | 0.14 | – | – | 20 | 0.14 | – | – |
4 | 20 | 0.2 | 30 | 0.25 | 30 | 0.25 | 30 | 0.25 | – | – |
5 (3/16) | 25 | 0.3 | 35 | 0.4 | 35 | 0.45 | 34 | 0.4 | – | – |
6 | 30 | 0.4 | – | – | 38 | 0.55 | – | – | – | – |
6.3 (1/4) | – | – | 40 | 0.6 | – | – | 38 | 0.68 | 42 | 4.5 |
8 (5/16) | 40 | 0.75 | 55 | 1 | 55 | 1 | 48 | 1.06 | 54 | 5 |
9 | – | – | – | – | – | – | – | – | – | – |
9.5 (3/8) | – | – | 65 | 1.4 | – | – | 57 | 1.54 | 64 | 9.5 |
10 | – | – | – | – | 70 | 1.55 | – | – | – | – |
12.5 (1/2) | – | – | 85 | 2.5 | – | – | 75 | 2.72 | 86 | 11.4 |
14 (9/16) | – | – | – | – | – | – | 84 | 3.43 | 95 | 12.3 |
15 (5/8) | – | – | 100 | 3.5 | – | – | 95 | 4.25 | 108 | 13.6 |
18 | – | – | 120 | 5.1 | – | – | – | – | – | – |
19 (3/4) | – | – | – | – | – | – | 115 | 6.11 | 127 | 15 |
25 | – | – | – | – | – | – | 150 | 10.6 | – | – |
Food Approved Material | |||||
Products | Colour | Hardness | Temperature range | CoF(Steel) | FDA |
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Round Profiles | TB Transparent | 72 A | -40°C to +40°C -40°C to +40°C | 0.85 | Ye |
PU Round Belts 2 – Sizes & Properties | |||||
RLB | RPZ | RPZS | RPN/RPN-NT* | RPS | |
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Hardness | 80 A | 88 A | 88 A | 88 A | 88 A |
USDA/FDA | Yes | No | No | No | No |
Temp. range | -40 /+55°C | -20 /+50°C | -20 /+50°C | -30 /+80°C | -30 /+80°C |
Coef. friction (Steel) | 0.55 | 0.5 | 0.5 | 0.38 | 0.4 |
Diameter mm (inch) | Min. pulley dia. (mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg. |
2 | – | – | – | – | – | – | 19 | 0.13 | – | – |
---|---|---|---|---|---|---|---|---|---|---|
3 (1/8) | – | – | – | – | – | – | 29 | 0.31 | – | – |
4 | 30 | 0.25 | – | – | – | – | 38 | 0.54 | – | – |
5 (3/16) | 35 | 0.40 | 45 | 0.8 | – | – | 48 | 0.85 | – | – |
6 | – | – | 54 | 1.16 | – | – | 57 | 1.22 | – | – |
6.3 (1/4) | 38 | 0.60 | – | – | – | – | – | – | – | – |
7 | – | – | – | – | – | – | 67 | 1.67 | 70 | 18 |
8 (5/16) | 55 | 1 | 72 | 2.05 | – | – | 76 | 2.18 | 80 | 19 |
9 | – | – | – | – | – | – | 86 | 2.75 | 90 | 21 |
9.5 (3/8) | – | – | – | – | – | – | – | – | – | – |
10 | – | – | 89 | 3.2 | 95 | 19.5 | 95 | 3.4 | 100 | 22 |
12 | – | – | 108 | 4.65 | 112 | 23 | 114 | 4.9 | 120 | 26 |
12.5 (1/2) | – | – | – | – | – | – | – | – | – | – |
14 (9/16) | – | – | – | – | – | – | – | – | – | – |
15 (5/8) | – | – | 135 | 7.25 | 135 | 24 | 143 | 7.65 | 150 | 27 |
18 | – | – | – | – | – | – | 171 | 11 | 180 | 37 |
19 (3/4) | – | – | – | – | – | – | – | – | – | – |
20 | – | – | – | – | – | – | 190 | 13.6 | – | – |
25 | – | – | – | – | – | – | – | – | – | – |
PU Round Belts 3 – Sizes & Properties | ||||
RM | RMW | RCW | RH | |
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Hardness | 90 A | 95 A | 100 A | 100 A |
Temp. range | -30 /+60 °C | -30 /+60 °C | -20 /+75 °C | -20 /+75 °C |
Coef. friction (Steel) | 0.45 | 0.36 | 0.27 | 0.28 |
Diameter mm (inch) | Min. pulley dia. (mm) | Pull force (1%) kg.) | Min. pulley dia. (mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg. | Min. pulley dia. (mm) | Pull force (1%) kg.) |
2 | 20 | 0.26 | – | – | – | – | 40 | 0.6 |
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3 (1/8) | 30 | 0.6 | – | – | – | – | 60 | 1.4 |
4 | 40 | 1 | – | – | – | – | 80 | 2.5 |
5 (3/16) | 50 | 1.6 | – | – | – | – | 100 | 3.9 |
6.3 (1/4) | 60 | 2.6 | 75 | 10 | 100 | 13 | 125 | 6.2 |
8 (5/16) | 80 | 4.2 | 95 | 17 | – | – | 160 | 10 |
9.5 (3/8) | 95 | 5.9 | 110 | 18 | 150 | 20 | 190 | 14 |
12.5 (1/2) | 125 | 10.1 | 150 | 28 | 200 | 21 | 250 | 16 |
15 (5/8) | 150 | 14.6 | 175 | 60 | – | – | 300 | 23 |
18 | 180 | 21 | 210 | 32 | – | – | 360 | 34 |
20 | 200 | 25.9 | – | – | – | – | – | – |