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SPZ,SPA,SPB,SPC,3V,5V,8V
Wrapped V-belts are power transmission components with a trapezoidal cross-section that transfers rotational force between pulleys through wedge action. The V-shaped profile wedges into the pulley groove under load, increasing friction and reducing slippage compared to flat belt designs. This wedge effect enables compact drive layouts with smaller pulley diameters and shorter center distances, supporting space-efficient machinery design in industrial applications.
The trapezoidal cross-section is the core functional feature of V-belts. As tension increases, the belt sides press more firmly against the pulley groove walls, generating additional friction proportional to the load. This self-tightening characteristic maintains power transfer across varying torque levels. The wrapped outer cover protects the internal rubber and cord from abrasion, oil, and environmental exposure, extending belt life in industrial environments.
Tensile strength is provided by internal reinforcement cords running along the belt length. Polyester cords are standard in most wrapped V-belt series, offering low stretch and consistent tension maintenance. Aramid cords are available for heavy-duty applications requiring higher tensile strength and reduced elongation. Cord material selection directly affects belt load capacity and suitability for shock load conditions in industrial machinery.
The outer wrapped cover is a fabric layer impregnated with rubber compound, providing abrasion resistance and environmental protection. The rubber compound surrounding the cords and filling the belt body manages flex fatigue and heat buildup during operation. Different rubber formulations address specific operating conditions such as oil exposure, high temperatures, or static conductivity requirements in commercial power transmission systems.
Wrapped V-belts are produced in multiple size series to match different power transmission requirements across industrial equipment.
The narrow V-belt series (SPZ, SPA, SPB, SPC) features a narrower profile relative to height, delivering higher power density than classical V-belts. This series is specified in modern industrial machinery where space is constrained. Cross-section dimensions: SPZ (10 mm top width × 8 mm height), SPA (13 mm × 10 mm), SPB (17 mm × 11 mm), SPC (22 mm × 14 mm).
The industrial V-belt series (3V, 5V, 8V) follows imperial sizing standards and is widely used in North American equipment and HVAC systems. Cross-section dimensions: 3V (9.5 mm top width × 8 mm height), 5V (16 mm × 13.5 mm), 8V (25 mm × 23 mm). This series supports heavy-duty power transmission in industrial fans, pumps, and compressors.
Wrapped V-belts serve power transmission across multiple industrial sectors. HVAC systems use them for fan and blower drives in commercial buildings and industrial facilities. Industrial machinery deploy them for motor-to-shaft power transfer in conveyors, machine tools, and processing equipment. Agricultural equipment relies on V-belts for harvester, tractor, and irrigation system drives. Automotive applications include accessory drive systems in engine compartments. Material handling equipment uses them for conveyor drives and lift mechanisms.
OEM services support brand-specific requirements for enterprise customers and original equipment manufacturers. Custom printing of logos and part numbers is available on belt surfaces. Lengths are produced to exact specifications within standard size series tolerances. Special rubber compounds addressing oil resistance, heat resistance, or static conductivity can be formulated for specific applications. Custom packaging and labeling options support branded supply chain integration. Minimum order quantities for OEM orders start at 1,000 pieces per specification, with tooling fees applied for orders below the MOQ threshold.
Production follows ISO 9001 quality management protocols. Each belt series undergoes tensile strength testing, flex fatigue testing, and dimensional verification. Length tolerance is controlled within ISO 4184 standards. Heat aging tests validate performance under continuous operating temperatures. Inspection records are maintained for each production batch, and test reports are available upon request for commercial procurement quality documentation.
Yes, sample belts for dimensional verification and material evaluation are available. Sample costs are deductible from confirmed bulk orders. Freight charges are the responsibility of the recipient.
The minimum order quantity is 1,000 pieces per specification. A mold fee applies for orders below the MOQ, which is refundable when cumulative orders reach the MOQ threshold.
Yes, custom logo and part number printing are available for OEM orders. Provide artwork files in vector format before production begins for layout confirmation.
Standard specifications ship within 25 to 35 working days for bulk orders. Custom formulations or special packaging may require additional time, confirmed at order placement.
Each production batch undergoes tensile strength testing, dimensional inspection, and visual quality checks. Batch inspection reports can be provided with shipments upon request.
Payment terms include T/T (30 percent deposit in advance, balance before shipment) and L/C at sight. Specific terms can be discussed for enterprise customers with established order history.
