Description
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Custom Hollow Bore PU Wheels For Direct Motor Mount
Why Choose This Product
Direct motor mount design. The hollow bore fits directly onto the motor shaft, which means fewer drive components, shorter assembly time, and lower spare parts inventory for your equipment line. A snug, wobble-free fit also reduces vibration and keeps the drivetrain compact, which helps maintain stable output during continuous conveyor operation.
Full customization freedom. Bore size (6 mm to 35 mm), outer diameter (50 mm to 220 mm), tread width, and PU hardness are all configurable. Our engineers give expert advice on the right combination for your load and speed, so you do not have to choose between performance and budget.
Non-marking PU compound. Our polyurethane tread is formulated to leave no marks on floors and deliver better abrasion resistance than ordinary rubber. This translates directly into longer wheel life and lower maintenance cost in continuous conveyor operation.
Trustworthy evidence. In-house hardness testing, dimensional inspection for each batch, ISO9001:2015 quality management, and a 12-month warranty all support the wheels we ship.
Technical Specifications
All parameters below can be engineered to match your motor shaft, application load, and available installation space. As a China OEM/ODM manufacturer, we support customized sizes, hardness, and mounting dimensions to fit your existing conveyor or material handling system.
| Custom Hollow Bore PU Wheel For Direct Motor Mount – Bore 6–35 mm, Shore 60A–95A (Customizable) | |
|---|---|
| Parameter | Value / Range |
| Bore Diameter | 6 mm to 35 mm (custom) |
| Outer Diameter | 50 mm to 220 mm (custom) |
| Tread Width | 16 mm to 70 mm (custom) |
| Hardness | Shore 60A to 95A |
| Hub Material | Aluminum 6061 or carbon steel |
| Tread Material | Thermoplastic polyurethane (PU) |
| Load Capacity | 200 kg to 600 kg per wheel |
| Working Temperature | -20°C to +80°C |
| Mounting Type | Direct motor mount with keyway, D-cut or set screw |
| Custom Options | OEM/ODM, custom logo, surface marking |
✔ Suitable for conveyor drive systems, AGVs, and industrial material handling equipment. ✔ Custom PU compound for non-marking and abrasion-resistant operation. ✔ Bulk orders welcome – contact us for wholesale pricing and sample support.
Details Images – Construction & Application
Hollow bore mounting. The most common shaft connection options are a straight bore with set screw, a keyway-milled bore, and a D-cut bore. We can also match your motor shaft tolerance class (for example H7/g6 recommended) to ensure a snug, wobble-free fit under continuous dynamic load.
PU tread profile. Flat, crowned, and V-grooved surfaces are available. Crowned tread is preferred for self-centering conveyor rollers, while flat tread suits powered drive wheels. Your factory drawings can be handled directly, or our design team can support you with a proposed drawing package.
Detailed product photos, dimensional CAD files, and bore type comparisons are available on request. Contact our sales engineer for the latest portfolio and design support.
Material Properties Of PU Tread
Laboratory data below reflects our standard PU formulation, which is designed specifically for continuous material handling operation with direct motor mount wheels.
| Property | Typical Value | Benefit For Application |
|---|---|---|
| Durometer | Shore 60A – 95A | Adjustable hardness for different load and cushioning needs |
| Tensile Strength | ≥ 40 MPa | Resists cracking under shock load |
| Abrasion Loss | ≤ 80 mm³ (DIN 53516) | Low wear keeps the wheel working longer |
| Tear Resistance | ≥ 90 N/mm | Withstands edge impact on rough floors |
| Compression Set | ≤ 35% | Keeps its shape under continuous pressure |
| Working Temperature | -20°C to +80°C | Stable performance in most industrial environments |
Hardness Selection Guide For Drive Wheels
| Application / Load Range | Recommended Hardness | Why This Range Works |
|---|---|---|
| Heavy-load conveyor drive wheels (above 300 kg per wheel) | Shore 92A – 95A | Reduces rolling resistance, prevents flat-spotting, and keeps the wheel stable on the motor shaft. |
| Medium-duty conveyor and material handling rollers | Shore 85A – 92A | Balanced wear resistance with enough cushioning for continuous belt contact. |
| Light-load or quiet-running equipment | Shore 75A – 80A | Better shock absorption and lower noise in lighter duty cycles. |
Custom hardness from Shore 60A to 95A is available from our factory, and our in-house compounding lets us fine-tune the formula to your actual load and speed conditions.
About Our Factory
About Us
Customers Visiting
We are a professional China-based manufacturer of polyurethane wheels, rollers, and custom molded parts, serving the material handling industry since 2010. Our factory works with a complete production chain: raw material compounding, metal hub machining, PU casting and injection molding, and final assembly. As a trusted OEM/ODM/OBM supplier, we serve conveyor brands, AGV manufacturers, and industrial distributors across the global market. Our team is happy to provide expert advice and a straightforward price suggestion before you commit to a trial order.
We regularly welcome customers from Germany, the United States, Japan, and Southeast Asia to inspect our production line, quality lab, and finished warehouse. Seeing the PU compounding, CNC machining, and testing process in person helps buyers build long-term confidence. Photos and short videos from recent customer visits are available on request if you would like to get a first impression before traveling.
Factory & Equipment
Our production floor covers about 8,000 m² and includes CNC turning and milling centers, automatic dispensing and casting lines for PU, curing ovens, and a precision testing lab. Every batch is checked for hardness, outer diameter tolerance, runout, and surface finish before packing. This disciplined process allows us to keep the same quality level from prototype to mass production.
Certifications
We operate under an ISO9001:2015 quality management system, and our materials meet RoHS requirements. Test reports for load capacity, abrasion resistance, and non-marking performance can be supplied upon request. Buyers are welcome to arrange third-party inspection before shipment.
Production & Inventory Policy
Lead time: Actual delivery time may fluctuate due to raw material supply, equipment capacity, and peak season workload. We will provide the most accurate shipping estimate possible after order confirmation and keep you updated throughout production.
Stock status: We generally do not keep mass-produced wheels in stock, but selected popular sizes are available. Real-time stock levels change with sales and production, so please contact our sales team before ordering if you need urgent supply.
Bulk & urgent orders: For large-volume orders or tight schedules, please inform us early so we can allocate capacity accordingly. We will do our best to align with your timeline.
Frequently Asked Questions
1. Q: Can you customize the hollow bore size for direct motor mounting?
A: Yes. Our custom hollow bore PU wheels are made to order for motor shafts from 6 mm to 35 mm, with keyway, D-cut, or set screw options. Send us your shaft drawing and operating conditions, and our engineers will recommend the best fit tolerance for a wobble-free direct mount.
2. Q: What is the minimum order quantity (MOQ)?
A: The standard MOQ is 20 pieces per size for production orders. For first evaluation, we accept smaller trial orders so you can check the wheel quality and shaft fit. After sample approval, bulk production is scheduled within 15 to 25 working days.
3. Q: What is the typical production lead time?
A: Regular custom bores and tread configurations take about 15 to 25 working days from drawing confirmation. Actual delivery may vary with raw material availability and current production load. For urgent projects, please contact us early to check express capacity.
4. Q: Which hardness is recommended for a heavy-load drive wheel?
A: For heavy-load conveyor drive wheels above 300 kg per wheel, we suggest Shore 92A to 95A polyurethane. This reduces rolling resistance, prevents flat-spotting, and keeps the wheel stable when mounted directly on the motor shaft. Lighter applications can use Shore 75A to 80A for better cushioning and quieter running, and our in-house compounding allows us to fine-tune the formula to your actual load and speed.
5. Q: Do you support OEM/ODM with custom branding and packaging?
A: Yes. We support OEM/ODM production, including custom hub machining, tread surface marking, barcode labels, and retail packaging design. As a professional China factory, we have served more than 200 brands worldwide with private-label production.
6. Q: What payment methods do you accept?
A: We accept T/T bank transfer, L/C at sight, Alibaba Trade Assurance, and Western Union for sample orders. Payment terms can also be tailored for long-term clients based on order history and contract value.
7. Q: How do you ensure consistent quality between batches?
A: Every batch goes through incoming material inspection, in-process dimension control, and final performance sampling before packing. We keep production lot records and can provide traceable test reports covering hardness, outer diameter tolerance, and non-marking verification.
8. Q: What shipping methods are available for international buyers?
A: We ship by sea freight for bulk orders, air freight for medium quantities, and international express (DHL, UPS, FedEx) for samples and urgent spare parts. Our logistics team will recommend the most cost-effective option based on weight, destination, and required arrival date.
Looking for a reliable manufacturing partner for your custom wheel project?
Get in touch for quick quotes, samples for evaluation, and volume discounts on regular orders. Our team is ready to support your project from motor shaft design to final delivery.
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