Description
Custom Smooth Finish PU Wheels For Cleanroom Carts
Why Choose This Product
The smooth finish with a surface roughness of Ra ≤ 0.8μm prevents dust accumulation and makes cleaning effortless — a critical feature for Class 100 and Class 1000 cleanrooms. This eliminates particle shedding and static buildup, ensuring safe operation for pharmaceutical, semiconductor, and food-grade environments.
The high-traction tread design ensures silent, vibration-free rolling even on polished epoxy floors, reducing noise levels by 40% compared to traditional hard plastic casters. Noise level remains below 55dB on hard flooring, providing a quieter workplace.
The reinforced steel hub with precision bearings supports dynamic loads up to 300kg while maintaining a tight turning radius for maneuverability in narrow aisles. Evidence from 500-hour continuous operation tests shows less than 2% wear on the tread surface, confirming exceptional durability.
Technical Specifications – Smooth Finish PU Wheel for Cleanroom Carts
These polyurethane wheels are designed for cleanroom material transport and automated carts. As a China OEM/ODM manufacturer, we support customized sizes, hardness, and core materials to match your existing cart system.
| Standard Smooth Finish PU Wheel – 150mm Diameter, Steel Core, Shore A 85° (Customizable) | |
| Diameter | 100mm / 125mm / 150mm / 200mm (custom sizes available) |
|---|---|
| Width / Tread | 30mm – 50mm (customizable) |
| Core Material | Reinforced steel (standard) / aluminum alloy (lightweight) |
| Roller Material (Coating) | Premium polyurethane (PU) – also available: NBR, EPDM, silicone |
| Hardness (Shore A) | 85° ± 3° (custom range 20° – 98°) |
| Load Capacity (per wheel) | 150–300 kg depending on size and configuration |
| Dynamic Balancing | N/A for standard; dynamic balancing available on request |
| Certifications | ISO9001:2015, RoHS, REACH compliant |
| Temperature Range | -20°C to +80°C |
| Packing Options | Export cartons, pallets, wooden cases, container loading |
| Color Options | White, black, or as your requirement |
| Custom Services | OEM/ODM: any size, hardness, core type, mounting holes. Free two revisions on custom orders. |
✔ Suitable for cleanroom carts, pharmaceutical trolleys, semiconductor wafer handling, and food processing conveyors. ✔ Custom polyurethane compound for non-marking and low particle shedding. ✔ Bulk orders welcome – contact us for wholesale pricing and sample support.
Product Details & Application Images
Material Performance Comparison – PU vs Rubber vs Nylon
| Property | Polyurethane (Our Product) | Standard Rubber | Nylon | Load Bearing |
|---|---|---|---|---|
| Abrasion Resistance (DIN 53516) | ≤ 50 mm³ | ≤ 120 mm³ | ≤ 80 mm³ | Excellent |
| Tensile Strength | ≥ 35 MPa | ≥ 15 MPa | ≥ 55 MPa | High |
| Elongation at Break | ≥ 450% | ≥ 350% | ≥ 20% | Moderate |
| Hardness | Shore A 85° ± 3° | Shore A 70° ± 5° | Shore D 75° | Good |
| Non-Marking Property | Yes (excellent) | Partial | Yes | — |
| Static Dissipative | Optional (10⁶ – 10⁹ Ω) | No | No | — |
| Food Contact Compliance | FDA / EU 1935/2004 option | Limited | No | — |
Polyurethane offers the best overall performance for cleanroom wheel applications – high abrasion resistance and load capacity, which directly translates to longer service life and reduced replacement frequency. Custom hardness from Shore 20A to 98A is available from our factory.
About Us — A Trusted China Manufacturer Since 2010
About Us
Customers Visiting
We are a professional factory based in Zhejiang, China, specializing in the development and production of high-performance polyurethane wheels and custom caster solutions. With a 15,000㎡ facility and 60+ skilled workers, we serve clients from over 30 countries across Europe, North America, and Southeast Asia. Our engineering team has extensive experience in custom formulations for demanding environments — from cleanrooms to heavy-load AGVs. We operate with a strict quality management system certified to ISO9001:2015, and we regularly undergo third-party audits from SGS and TÜV. Every batch is tested for hardness, abrasion, and load capacity before shipment. We believe in transparent communication, realistic lead time estimates, and building long-term partnerships rather than one-off transactions. As a China-based OEM/ODM supplier, we offer customization — from roller hardness (Shore A 20°~98°) to hub materials (steel/aluminum) and mounting patterns. Wholesale orders are welcome with competitive direct pricing.
Factory & Equipment
Certifications & Quality Assurance
Production & Inventory Policy
Lead time: Actual delivery time depends on raw material supply, production scheduling, and seasonal demand fluctuations. We provide an estimated lead time after order confirmation and keep you updated throughout the process. For urgent requirements, please discuss with our team in advance so we can prioritize accordingly.
Stock status: We generally operate on a made-to-order basis, but selected popular sizes and specifications are kept in limited stock. Stock quantities change dynamically with sales and production. We recommend contacting our sales team to confirm real-time availability before placing an order.
Bulk & urgent orders: For large-volume or time-sensitive projects, please communicate your needs with us early. We will review our production capacity and scheduling to find the best possible solution for your timeline.
Frequently Asked Questions – Smooth Finish PU Wheels
Can you provide custom solutions for my specific cleanroom cart design?
Yes, we specialize in OEM/ODM custom solutions. You can specify wheel diameter, tread width, hub material, bearing type, hardness (Shore A 70°–95°), and even color. Our engineering team will offer expert advice to match your load, floor type, and environmental requirements. We have successfully developed custom PU wheels for semiconductor wafer carts, hospital beds, and food processing lines.
What is the minimum order quantity (MOQ) for custom PU wheels?
Our standard MOQ is 100 pieces per size for custom orders, which allows us to offer competitive pricing while maintaining efficient production. For sample orders or small-batch testing, we can accommodate quantities as low as 10 pieces at a slightly higher unit price. Contact us with your target quantity and we will provide a tailored quotation.
How do these wheels perform on polished epoxy or vinyl cleanroom floors?
Our smooth finish PU tread is specifically formulated for hard, polished surfaces. The Shore A 85° hardness provides enough grip for controlled movement without leaving marks or scuffs. In lab tests, the wheels showed no visible marking after 10,000 cycles on polished epoxy, and the noise level remained below 55dB. This makes them an excellent choice for cleanrooms where floor protection and quiet operation are priorities.
What packaging and shipping options are available for export orders?
We pack wheels in sturdy export-grade cartons with individual foam separators to prevent surface scratches. For bulk orders, we use palletized packing with stretch wrap and corner protectors. Shipping can be arranged via sea freight (FOB Shanghai or Ningbo), air freight, or express courier (DHL, FedEx, UPS) depending on your urgency and budget. We provide expert advice on the most cost-effective shipping method for your destination.
What quality control measures do you have in place to ensure consistent product quality?
We follow a strict QC protocol: incoming raw material inspection, in-process dimensional checks, 100% hardness testing after demolding, and final load test on random samples from each batch. Our ISO9001-certified system ensures full traceability from raw material lot to finished product. For cleanroom applications, we can also provide particle count test reports upon request. We back our quality with a 12-month warranty against manufacturing defects.
How does your pricing compare to standard rubber or nylon wheels in the market?
Our PU wheels are priced competitively considering their superior wear resistance, longer service life, and cleanroom compatibility. While the upfront cost is typically 15–25% higher than standard rubber wheels, the total cost of ownership is lower because they last 3–5 times longer and reduce maintenance and replacement downtime. We offer volume discounts for orders above 500 pieces, and our wholesale pricing is designed to support distributors and OEM buyers. Request a quote to see how we can match your budget.
Looking for a reliable manufacturing partner for your cleanroom material handling needs?
Get in touch for quick quotes, custom samples, and volume discounts. Our team is ready to support your project from design to delivery with expert advice and competitive pricing.
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