
Variable Speed V belt is a specialized power transmission belt designed to continuously adjust operational speed while maintaining torque transfer in combine harvesters and other agricultural machinery. It has Trapezoidal cross-section with variable-width grooves to accommodate shifting pulley diameters, and reinforced tensile cords for minimal stretch under dynamic loads.
Brand :
Zhongliang, Liannong, Agreap, Rnupower, JDREItem No :
HM-3660LwCertificate :
ISO9001, ISO14001, ISO45001 and ISO50001Payment :
100% T/T before deliveryProduct Origin :
ChinaShipping Port :
Any port in domestic of ChinaLead Time :
15-45 working daysApplications:
Features:
Adopting reinforced CR + Special polyester or aramid cord, guarantee high power transmission capacity
Suitable for drives with small pulley diameters
High tensile strength, Lower elongation and slippage
Suitable for heavy-duty, high-speed applications
Anit-static, Oil and heat resistant, Flame-Retardant, Cold-Resistant, Corrosion-Resistant, Alkali-Resistant, Skid-Resistance, Wear-Resistant
Temperature range: -25˚C to +100˚C
Recommended relative humidity: 65±15%
Manufactured in ISO 9001 registered facility
Structure Details:
| No. | Name | Material | Function |
|
1 |
Cover Fabric | Polyester Cotton Canvas | Protect the linling tensile member |
| 2 | Top Fabric | Polyester Cotton Canvas | Wear-resistant |
| 3 | Filler Rubber | CR, EPDM | Maintain the top shape of the adhesive tape |
| 4 | Cushion Rubber | CR, EPDM | Core material to pass the dynamic force |
| 5 | Tension Cord | Polyester/Aramid Cord | High tensile cord embedding cushion rubber compound |
| 6 |
Base Rubber |
CR, EPDM | Support and protect the adhesive force of the tensile member |
| 7 | Bottom Fabric | CR, EPDM | Maintain the bottom shape of the adhesive tape |

Cross section specifications:
| Section | Dimensions | Manufacturing Length Range | ||||
|
Top Width (mm) |
Height (mm) |
Pitch Width (mm) |
Angle (°) |
Min.(Inch/mm) | Max.(Inch/mm) | |
| HI | 25.4 | 12.7 | 23.6 | 40° | 40/1000 | 590/15000 |
| HJ | 31.8 | 15.1 | 29.6 | 40° | 40/1000 | 590/15000 |
| HK | 28.1 | 17.5 | 35.5 | 40° | 40/1000 | 590/15000 |
| HL | 44.5 | 19.8 | 41.4 | 40° | 40/1000 | 590/15000 |
| HM | 50.8 | 22.2 | 47.3 | 40° | 40/1000 | 590/15000 |
| HN | 57.2 | 23.9 | 53.2 | 40° | 40/1000 | 590/15000 |
| HQ | 63.5 | 25.4 | 59.1 | 40° | 40/1000 | 590/15000 |
Reference Standards: BS 3790, DIN 2215, RMA/MPTA IP-22, ISO 4184, IS 2494, ISO 3790, BS 3733, ASAE 211.5
FAQ:
1.Are you a manufacturer in China?
Answer: Yes, we are the leading manufacturer of Agricultural V belt in domestic of China, and own 3 factories at present.
2. What kind of certifications do you have?
Answer: We have passed ISO9001, ISO14001, ISO45001, ISO50001
Answer: 1) Our Material Composition:
Top-grade chloroprene rubber----CR/EPDM (oil & heat resistant)
Polyester/Aramid tensile cords
Abrasion-resistant cover fabric (extends lifespan by 30% vs standard belts)
2) Differentiated Advantages:
Longer Service Life – 2,000+ hours under heavy loads (independently verified)
Precision-Molded Profiles – Ensures 98% power transmission efficiency
Static-Dissipative Options – Critical for grain dust environments (ISO 1813 certified)
Answer: Selection requires three key parameters:
1) Shaft speed (RPM)
2) Pulley diameters (driver/driven)
3) Center distance
For 5.5kW applications:
Standard recommendation: A-section (A55~A80) or B-section (B45~B75) classical V-belts
Next steps: Provide equipment name and model (e.g., pump/compressor type), Our engineers will validate the optimal belt within 4 business hours.
5. What's the minimum order qty?
Answer. It depends on sizes and mould height.
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