0 products
No products found
Try adjusting the filters or selecting another subcategory.
Get Multiple Factory Quotes for Your Parts in 24 Hours
Connect with 800,000+ listed factories in Asia. Receive multiple quotes for your parts and manage production with speed and confidence.
V Belts and Pulleys for Motors & Drive Systems
When comparing V-belt and pulley suppliers from Chinese factories specializing in classical V-belt drives, narrow-profile wedge belts, and matched pulley sets for industrial power transmission, start with production capabilities and quality control documentation, or for higher-grip, multi-rib applications, browse poly-V belts as the step up from classical V-belts.
These quality issues are avoidable when you vet suppliers properly, but they require upfront effort. As you browse through the listings, you can find information on the range of production capacity (500-50,000 units/month), workforce (50-500 employees), quality control staff percentage (5-15% of the workforce), and export percentage (40-80%). You can contact factories directly to discuss groove angle tolerances, pulley bore specifications, and belt cross-section requirements. The verification process filters through the 800,000+ factory network to find only those with a business license and equipment inventory, and at least a basic level of ISO 9001 certification.
For side-by-side comparisons, an RFQ should include specifications for bore tolerance (precision shaft fit at ±0.01 mm), roller idler hardness (Shore A 70-80 for belt grip), runout limits (maximum of 0.02 mm), material certifications, and order quantity. About 90% of RFQs receive eight or more responses within 24 hours. There is no minimum for platform responses. The factories' decision to respond to an RFQ depends on the quantity and complexity of the order. Unless a factory declines based on complexity, prototype quantities of 20 pieces get the same access as production runs of 2,000. An NDA and an English-speaking account manager are free.
Other related parts categories: Flat Belts, Poly V Belts and Pulleys, Timing Belts, Timing Belt Pulleys
Frequently Asked Questions
How Do I Verify a Factory Can Hold ±0.01 mm Bore Tolerance Across a Production Batch?
Request dimensional inspection reports from recent production runs showing bore measurements from at least 10 samples across the batch. Factories with precision grinding equipment and process controls document variation within ±0.005-0.01 mm, not ±0.03-0.05 mm swings that cause shaft misalignment and rejections.
What Should I Specify in My RFQ to Ensure Shore A 70-80 Hardness for the Belt Compound?
State the required Shore A hardness range (70-80), request material traceability certificates for the rubber compound, and ask for durometer test reports from previous batches. Include "Provide rubber compound specification and hardness test frequency" to verify the factory measures hardness during production rather than relying on supplier data alone.
How Does Haizol Help Me Find a V-Belts and Pulleys Manufacturer in China?
Haizol pre-screens factories with a general verification step before they're added to the directory, then lets you search by belt profile, pulley size, and bore tolerance to find a match. You contact the factory directly and negotiate price and terms yourself, Haizol takes no cut of what gets quoted. Bring up Shore A hardness range and groove-profile inspection method, profile projectors or CMM, directly with the factory so you can judge their capability before committing. Most factories answer within a day, and a free account manager can submit one inquiry across several matches if you want quotes compared side by side.
How Do I Prevent the 6-Week Quote From Becoming 8-10 Weeks Due to Rework and Quality Issues?
Request lead time broken down by phase: material procurement, machining, rubber application, and inspection. Ask about current production queue length and include in your RFQ: "Confirm material is in stock and state if rubber compounding or coating is subcontracted" to identify delays before selecting a supplier.
What Causes Belt Slippage and Premature Wear, and How Do I Verify a Factory's Capability?
Inconsistent groove machining or a mismatched belt-to-pulley profile causes excessive slippage, leading to vibration and premature belt wear. Request sample pulleys with groove-profile inspection reports measured on precision equipment (profile projectors or CMM), and ask whether the factory performs 100% dimensional inspection or batch sampling.
What Certifications Should I Request Beyond ISO 9001 for V-Belts and Pulleys in Industrial Drive Systems?
Ask for material traceability certificates on the belt's rubber compound and the pulley's cast or machined material, along with dimensional inspection reports confirming groove profile and pitch diameter. For automotive or export applications, request RoHS compliance documentation where relevant.