Description
Custom Reversing Duty Polyurethane Wheels for Conveyor Systems
These custom reversing duty polyurethane wheels are purpose-built in our China factory for conveyor systems, indexing tables and transfer lines that run forward and backward thousands of cycles per shift, a duty pattern where ordinary rubber or low-grade PU wheels flat-spot, crack at the hub or lose running tolerance surprisingly fast. We cast the tread from MDI ether-based polyurethane around a machined cast iron or steel core, so the wheel keeps its roundness under reversing loads, holds a consistent grip in both directions and runs quiet on steel and stainless track. As a top China-based manufacturer and supplier with in-house casting, machining and dynamic balancing equipment, we supply these conveyor wheels on a wholesale basis with full customization of bore, keyway, hardness, tread profile and branding, and every batch leaves the line with dimensional and runout inspection records attached. For buyers comparing suppliers, the practical benefit is a lower cost per running hour: fewer wheel changeovers, less unplanned downtime and predictable pricing across repeat orders. We are happy to give expert advice on hardness selection and a realistic price suggestion based on your load, speed and track material.
Why Choose These Reversing Duty Polyurethane Wheels
The feature that matters most here is the cast polyurethane tread bonded directly to a machined metal core rather than a rubber tyre pressed onto a hub. Bonding rather than pressing means the tread cannot walk off the core during rapid direction changes, and the higher tear strength of cast PU means the tread resists chunking even when the conveyor reverses with a full load on the wheel. Compared with standard rubber wheels of the same diameter, a cast PU wheel typically carries roughly two to three times the load for the same footprint, which lets you either increase payload on an existing conveyor frame or downsize the wheel without losing capacity. For plant engineers, that translates into fewer bearings to replace, quieter operation near inspection stations, and longer intervals between planned maintenance windows. We verify this on every production run with hardness checks, dimensional measurement and runout measurement, and we can supply third-party inspection reports if your project requires them.
- Reversing duty tread geometry that resists flat spotting under two-direction indexing
- Cast polyurethane bonded to a machined steel or cast iron core for high shear strength
- Hardness options from Shore A 70 to Shore A 95 to match load and grip requirements
- Bore, keyway, groove and mounting plate fully customized to your shaft drawing
- Machined and ground running surfaces with controlled runout for smooth tracking
- Ether-based PU grades available for humid, wash-down and mildly oily environments
- Batch-level inspection records and material batch traceability
- OEM and ODM projects supported from drawing review to first article sample
Specifications
The table below lists the ranges we produce most often. Because every conveyor frame and shaft differs, treat these as starting points and send us your drawing or sample for an exact quotation. As a professional China OEM/ODM manufacturer, we support customized sizes, hardness grades and core materials to match your existing conveyor system.
| Parameter | Typical Range and Options |
|---|---|
| Wheel diameter | 50 mm to 250 mm, plus custom diameters to drawing |
| Tread width | 30 mm to 80 mm, flat, crowned or grooved profiles |
| Core material | Cast iron, carbon steel, stainless steel, aluminium alloy or engineering plastic |
| Polyurethane type | MDI ether-based, TDI polyester-based or HDI-based cast PU |
| Hardness | Shore A 70 to Shore A 95, or Shore D 50 to Shore D 70 for high-load versions |
| Load capacity | Approximately 50 kg to 3,000 kg per wheel, depending on diameter, hardness and core |
| Bearing options | Precision ball bearing, tapered roller bearing, plain bore, keyed bore, split bore |
| Bore diameter | 10 mm to 60 mm, machined to your shaft tolerance |
| Operating temperature | -20 °C to +80 °C continuous, higher short-term peaks available on request |
| Dimensional tolerance | Diameter ±0.3 mm, runout typically within 0.2 mm, tighter on request |
| Colour | Natural amber, black or custom pigmented |
| Customization | Bore and keyway, tread profile, mounting plate, logo, packaging and private label |
Material Properties
The values below reflect our standard cast polyurethane grades. Where a figure is critical to your application, tell us the load and cycle count and we will recommend a grade and confirm it with a sample test. This is where our professional engineering support becomes a real advantage for your reversing duty conveyor project.
| Property | Typical Value |
|---|---|
| Hardness | Shore A 85 standard, Shore A 70 to 95 available |
| Abrasion resistance | DIN 53516 abrasion commonly in the 25 mm³ to 60 mm³ band, depending on grade |
| Rebound resilience | 40% to 55%, giving low rolling noise on steel track |
| Tear strength | High, which limits chunking under reversing contact |
| Compression set | Low, helping the wheel keep its roundness under static load |
| Oil and grease resistance | Good with polyester-based grades, moderate with ether-based grades |
| Hydrolysis resistance | Good with ether-based MDI grades, suited to humid and wash-down areas |
| Load bearing behaviour | Higher hardness raises load capacity while reducing grip and noise absorption |
How to Choose the Right Hardness
Hardness is the single decision that most affects wheel life on a reversing conveyor. Softer grades around Shore A 70 to 80 protect delicate products and reduce noise but deform more under heavy static load, so they suit light packages, glass and electronics lines. Mid-range Shore A 85 is the workhorse choice for mixed loading on steel or aluminium track. Harder grades from Shore A 90 to Shore A 95, or Shore D versions, are used where load is high, rolling resistance must stay low and the track is smooth enough not to punish a stiff tread. If your wheels currently fail by flat spotting, we usually move one step harder and increase tread width; if they fail by cracking or chunking, we normally recommend an ether-based grade with higher tear strength. Send us a worn wheel and we can often read the failure mode directly.
Customization and Ordering
- Send a drawing, a worn sample or even a photograph with shaft dimensions and we will quote against it
- First article or pre-production samples can be produced for validation before mass production
- Bore, keyway, snap ring groove, set screw hole and mounting plate machined to your tolerance
- Tread profile options include flat, crowned, grooved, tapered and chamfered edges
- Private label, custom packaging and OEM or ODM branding supported
- Mixed size containers can be arranged to reduce freight cost per unit
These reversing duty polyurethane wheels are offered for sale with full OEM and ODM support, and we regularly supply wholesale quantities to conveyor builders and material handling integrators across Europe, North America and Southeast Asia. If you are comparing suppliers on total cost of ownership rather than unit price, our team is glad to prepare a detailed price suggestion tuned to your market and annual volume.
Details Images – Construction & Application
Material Performance for Reversing Duty Conveyor Wheels
Each batch of cast polyurethane is formulated to a tight specification, and we retain abrasion, hardness and rebound records so that the grade supplied in one order matches the next. This repeatability is what allows reversing duty conveyor wheels to keep a consistent footprint and grip over a long service life, and it is one of the reasons our wholesale customers in Europe and North America build us into their scheduled maintenance programmes rather than buying on price alone.
About Us – China Factory for Reversing Duty Polyurethane Wheels
About Us
Customers Visiting
We are a China-based manufacturer and supplier of cast polyurethane wheels, rollers and custom industrial components, serving conveyor builders, material handling integrators and OEM equipment makers in Europe, North America, the Middle East and Southeast Asia. Our workshop combines polyurethane casting, metal machining, core preparation and assembly under one roof, which means the bonding process, the core tolerance and the final runout are all controlled by the same team rather than split across outside vendors. Over more than a decade of export production we have learned that most wheel complaints trace back to a mismatch between the requested hardness, the core design and the actual duty cycle, so we ask questions before we quote. Our engineers provide expert advice on grade selection, tread geometry and load distribution, and our sales team gives an honest price suggestion for your target market rather than an artificially low opening quote.
Factory and Equipment
Our production line is set up for repeatable small-to-mid volume runs as well as larger wholesale orders. Core preparation is done on CNC lathes and machining centres, polyurethane is cast in temperature-controlled moulds with degassing, and finished wheels are trimmed, ground where required and checked for runout on dial indicators. Assembly of bearings, spacers and retaining rings is carried out at dedicated benches, and every shipped batch is packed with a dimensional record so your incoming inspection has something to compare against.
- CNC lathes and machining centres for steel, cast iron and aluminium cores
- Temperature-controlled casting and curing area for consistent hardness
- Surface grinding and finishing equipment for precision running faces
- Dial indicator runout and dimensional inspection stations
- Hardness testing and abrasion sample records kept by batch
- Assembly benches for bearings, spacers and retaining rings
- In-house packing area with export-grade crating
Quality Control and Certifications
Quality control starts at incoming raw material, where we record the polyurethane batch number and metal certificate, and continues through each production step. Finished wheels are checked against the agreed drawing for diameter, width, bore, hardness and runout, and results are filed against the production lot. Material certificates, dimensional reports and third-party inspection reports can be provided on request, and we welcome customer-appointed inspection before shipment. If your product must comply with specific standards or end-user documentation requirements, tell us at the enquiry stage so we can confirm feasibility before production starts.
Production and Inventory Policy
Lead time: Actual lead time depends on raw material supply, machining and casting schedules, and peak-season workload, so reasonable variation should be expected. Once an order is confirmed we provide the most accurate delivery estimate we can and keep you updated if anything changes.
Stock status: We do not hold stock as a general rule, although a portion of fast-moving standard sizes is kept available. Real stock levels move with sales and production, so please contact us before ordering to confirm live availability for your size.
Bulk and urgent orders: For large volumes or urgent requirements, talk to us early about capacity and scheduling. We will do our best to align production with your timeline, and we will tell you honestly if a date cannot be met.
Frequently Asked Questions – Reversing Duty Polyurethane Wheels
Q: What makes these wheels suitable for reversing duty rather than one-direction travel?
A: The cast polyurethane tread is chemically bonded to the core instead of being pressed on, so repeated direction changes cannot make the tread creep or separate. The tread profile and hardness are also selected to resist flat spotting when the conveyor indexes forward and backward continuously, which is the most common failure mode on reversing conveyors.
Q: Can you supply a custom reversing duty polyurethane wheel to our drawing or sample?
A: Yes. Send your shaft dimensions, load per wheel, speed, track material and a worn sample if available. We will review feasibility, recommend a hardness grade and core material, and come back with a quotation. OEM and ODM projects, including private label marking and custom packaging, are all within our normal scope.
Q: How do I choose between Shore A 85 and a harder grade?
A: Shore A 85 suits most mixed-load conveyors on steel track. Move to Shore A 90 to 95 if your wheels are failing by flat spotting, if loads are consistently heavy, or if you need lower rolling resistance. Choose a softer grade around Shore A 70 to 80 for delicate products or where noise must be kept low. We are glad to give advice based on your actual cycle data.
Q: What is your minimum order quantity?
A: MOQ depends on diameter, core type and whether tooling is needed. For standard sizes already in production, trial quantities can often be arranged. For fully custom cores or new moulds, we will state the minimum batch that keeps tooling cost reasonable, and for wholesale repeat programmes we can schedule regular production runs.
Q: How are the wheels packed for export?
A: Wheels are wrapped to protect the running surface, separated with dividers where needed, and packed in cartons on export pallets or in plywood cases for heavy sizes. Batch inspection records travel with the shipment. Custom carton printing and private label packing are available.
Q: What payment and shipping terms do you work with?
A: We commonly work on T/T and can also accept other terms by agreement. Shipping is arranged by sea, air or express depending on volume and urgency, and we can quote FOB, CIF or door-to-door options so you can compare the landed cost before committing.
Q: Do you provide a warranty?
A: We stand behind our workmanship and will replace or remedy any wheel that fails to meet the agreed drawing specification within the stated warranty period. Because wear life depends on load, speed and environment, we ask for application details up front so that the grade we recommend is matched to the duty, and we will discuss any premature failure openly with you.
Q: How do I place an order?
A: Send your drawing or sample details, required quantity and destination port. We confirm the specification and price, produce a sample for approval where necessary, and then schedule production. You will receive inspection records with the shipment and can appoint third-party inspection if you prefer.
Looking for a reliable manufacturing partner for reversing duty polyurethane wheels on your conveyor project? Get in touch for a quick quote, a custom sample or volume pricing. Send us your drawing or a worn wheel and we will come back with a clear recommendation from design through to delivery.
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