Description
Custom Heat Resistant Polyurethane Wheels for Kiln Carts
Kiln carts live in conditions that destroy ordinary wheels. Radiant heat, hot air, fine dust and heavy loads combine to soften rubber and general-purpose polyurethane, which shows up as flat spots, cracked treads and frequent wheel changes. Our custom heat resistant polyurethane wheels are engineered for exactly this duty: we match the PU formulation, the core material and the bearing set to the temperature, load and track conditions of your kiln line. As a China-based factory and manufacturer working directly with buyers, we take on OEM and ODM wheel projects from drawing to finished part, so you receive a professional custom solution at wholesale price instead of a generic catalogue item. Units are for sale in single prototypes, small batches and full container volumes, and our engineers are glad to give expert advice on hardness, diameter and bearing choice before you place a firm order.
Why Choose Our Heat Resistant Polyurethane Wheels
Heat resistance that keeps its shape. The polyurethane we use for kiln cart wheels is formulated to retain hardness and rebound at continuous service temperatures of around 120 °C, with short-term peaks above that depending on load and speed. Standard rubber and low-grade PU soften under the same conditions, so their tread flattens and the cart begins to drag, straining the drive and the track. Our compound stays resilient, which means smoother rolling and fewer wheel changes on a hot line. Real-world performance always depends on the specific duty cycle, so we ask you to share your temperature profile with us for confirmation.
Built to your drawing, not pulled from a shelf. No two kilns run the same way. We produce wheels to your drawing or sample, adjusting diameter, tread width, tread profile, hub bore, keyway and bearing type as needed. Because the work is done in our own workshop rather than subcontracted through traders, modifications are machined and inspected on site, which shortens lead time and keeps pricing competitive for both trial orders and repeat volume.
Core and bearing matched to the load. A polyurethane tyre is only as good as the hub beneath it. We machine cast iron, carbon steel, stainless steel or aluminium cores and bond the PU under controlled conditions so the tyre does not separate under shock loading or repeated thermal cycling. For heavy kiln carts we normally recommend a tapered roller bearing; for lighter or slow-moving units, a deep groove ball bearing or plain bore is often the better fit. Once we know your cart weight and track layout, we can advise on the most suitable combination.
Quality you can actually verify. Our workshop operates under an ISO 9001 quality management system. Hardness, bore tolerance and bond integrity are checked on every production batch, and we can supply inspection reports or arrange third-party testing if your project calls for it. Buyers are welcome to visit the factory or send an inspector before shipment, and quality control is treated as a top priority from raw material intake to final packing.
Specifications – Custom Heat Resistant Polyurethane Kiln Cart Wheels
The table below shows the typical ranges we work with for custom heat resistant polyurethane wheels. Final figures are confirmed against your drawing, load data and working temperature before production starts. As a China OEM/ODM manufacturer, we support customized sizes, hardness and core materials for global kiln and material handling projects.
| Item | Typical Range or Option |
|---|---|
| Wheel diameter | 150–500 mm, with custom sizes produced on request |
| Tread width | 50–120 mm |
| Polyurethane hardness | Shore A 80–95, adjusted to suit load and working temperature |
| Tyre colour | Natural amber, black, or customized to your requirement |
| Core material | Cast iron, carbon steel, stainless steel or aluminium |
| Bonding method | Chemically bonded with additional mechanical locking where required |
| Bearing type | Tapered roller, deep groove ball, or plain bore |
| Bore diameter | 20–60 mm, or machined to drawing |
| Load capacity | Typically up to 2,000 kg per wheel, depending on size, speed and duty cycle |
| Continuous working temperature | Up to approximately 120 °C |
| Peak temperature | Higher peaks are possible for short cycles; please confirm with our technical team |
| Tread finish | Machined, ground or grooved |
| Mounting options | Keyway, set screw, circlip or bolted flange |
| MOQ | Flexible; trial quantities accepted for evaluation |
| Packaging | Wooden case, pallet or carton with protective wrap |
| Lead time | Confirmed once order details and the current production schedule are reviewed |
Custom heat resistant polyurethane kiln cart wheels are available in prototype quantities, small trial batches and full container loads, with wholesale pricing and expert advice on hardness, diameter and bearing selection before you place a firm order.
Product Details
Our kiln cart wheels are supplied as complete assemblies: a machined metal core, a bonded heat resistant polyurethane tyre, and a fitted bearing set where required. The tyre can be plain, crowned or grooved depending on how the cart runs on its rails. Because wheel designs vary so much between kiln lines, we prefer to send detailed photographs of comparable production units together with your quotation, so you can see the actual core profile, tread finish and bearing arrangement before ordering. Sample wheels can also be shipped for hands-on inspection.
- Polyurethane tyre bonded to a machined core, with the bond line checked on each batch
- Precision bore and keyway to suit your axle, reducing vibration and wobble during travel
- Bearing seats machined to tolerance so replacement bearings fit without shimming
- Tread profiles available for flat rails, channel tracks and uneven or worn running surfaces
Details Images – Construction & Application
Material Properties
The figures below describe the typical behaviour of our standard heat resistant polyurethane formulation. Values shift with hardness grade and with the temperature the wheel actually sees in service, so please treat them as a guide and confirm the final specification with our engineers. Custom hardness grades outside this range can be discussed with our technical team.
| Property | Typical Test Reference | Typical Value |
|---|---|---|
| Hardness | ASTM D2240 (Shore A) | 80–95 |
| Tensile strength | ASTM D412 | 35–50 MPa |
| Elongation at break | ASTM D412 | 400–550 % |
| Tear strength | ASTM D624 | 60–90 kN/m |
| Abrasion loss | DIN 53516 | 25–40 mm³ |
| Compression set at 70 °C, 22 h | ASTM D395 | 25 % or less |
| Rebound resilience | ASTM D2632 | 40–55 % |
| Continuous service temperature | Supplier data and customer trials | Up to approximately 120 °C |
About Us – China OEM/ODM Factory for Heat Resistant PU Wheels
Inside Our Factory
Customers Visiting
We are a China-based polyurethane manufacturer and supplier with years of hands-on experience producing custom wheels and rollers for kiln carts, ceramic and brick plants, and general industrial material handling. Our work covers both OEM and ODM projects: customers send drawings, existing samples or simply performance requirements, and our engineering team turns them into a manufacturable wheel design.
Because production stays inside our own workshop, we control the whole chain from PU formulation and core machining through bonding, finishing and final inspection. That gives buyers a direct factory channel instead of a line of intermediaries, which usually means tighter control over quality, greater flexibility on customization, and a more competitive price for both trial orders and volume production.
We serve buyers across Europe, North America, Southeast Asia, the Middle East and South America. Whether you need a single replacement wheel or a container of customized units, our team is ready to discuss the details and give honest advice on what will actually hold up in your application.
Factory & Equipment
Our workshop is set up for medium to large polyurethane wheel production, with the main process steps handled in house rather than outsourced. This is what allows us to keep both quality and delivery under our own control.
- CNC lathes and machining centres for core turning, boring and keyway cutting
- Polyurethane casting and curing ovens running controlled temperature profiles
- Surface preparation and bonding stations for reliable tyre-to-core adhesion
- Surface grinders for tread finishing and profile truing
- Hardness testers, bore gauges and balancing equipment for batch inspection
- Assembly area for bearing fitting, sealing and final packing
Our Factory Workshop with Professional Equipment for PU Wheel Manufacturing
Our Certifications (ISO9001, RoHS, Testing Reports)
Certifications & Quality Control
Our quality management follows ISO 9001 requirements, and we can provide the applicable certificate together with material data sheets for the polyurethane grades we use. Depending on your market, we can also arrange RoHS testing, third-party inspection or customer-specified test reports. Every shipment leaves with a batch record covering hardness, key dimensions and visual inspection, so your incoming quality team has a clear reference to check against. Where a specification cannot be met for a particular requirement, we will say so before production rather than after.
Buyers and their inspectors also visit our factory regularly to review production, examine sample wheels and discuss new kiln cart projects. During these visits we walk through the drawing review, the polyurethane formulation and the inspection plan together, so both sides know exactly what will be delivered before the order is released. If you are planning a sourcing trip in China, we are happy to arrange a factory visit and prepare samples of comparable heat resistant polyurethane wheels for you to inspect in person.
Production & Inventory Policy
Lead time: Actual lead time is affected by raw material supply, machining capacity and peak-season workload, so it can vary from order to order. Once your order is confirmed, we will give you the most accurate delivery estimate we can and keep you updated throughout production.
Stock status: We generally build to order rather than holding inventory, although a limited number of fast-moving standard sizes may be in stock. Available quantities change with sales and production, so please contact us before ordering to confirm real-time stock.
Bulk and urgent orders: For large quantities or urgent requirements, please talk to us early about capacity and scheduling. We will do our best to fit your timeline.
Frequently Asked Questions
What makes these wheels suitable for kiln carts specifically?
They are designed around the two conditions that cause most kiln cart wheel failures: sustained heat and heavy static load. The polyurethane compound is selected to resist compression set and surface cracking at elevated temperatures, and the core is machined to keep the tyre firmly seated through repeated thermal cycling. On a hot line that combination means the wheel keeps its round profile instead of developing flat spots and leading to drag, vibration and premature replacement.
Can you customize hardness, size and bearing type for my kiln cart?
Yes. Customization is the core of what we do. We produce to your drawing or sample and can adjust diameter, tread width and profile, polyurethane hardness, core material, bore, keyway and bearing type. If you only know your cart weight, running speed and working temperature, our engineers will propose a specification and explain the trade-offs between hardness, load capacity and rolling resistance. Full OEM and ODM support is available.
What load and temperature can the wheels handle?
As a general guide, our heat resistant polyurethane wheels handle loads up to around 2,000 kg per wheel and continuous service temperatures of approximately 120 °C, with short-term peaks above that. These are not fixed limits, because load capacity falls as speed and temperature rise. Please share your actual duty cycle so we can confirm a safe specification for your application.
Do you accept sample or trial orders?
Yes. We understand that no buyer wants to commit to a container before testing. Trial quantities are accepted so you can run the wheels on your own kiln line and check wear, temperature behaviour and rolling performance. Once the sample is approved, the same formulation and machining parameters are carried over to series production.
What is your MOQ and typical lead time?
Our minimum order quantity is flexible and depends on the wheel size and how much tooling is involved. Lead time is confirmed after we review the drawing and the current production schedule, and it is affected by raw material availability and seasonal workload. For planning purposes, we will give you a clear estimate at the quotation stage and flag any change as soon as it appears.
How do you control quality and what certificates can you provide?
Our workshop runs under an ISO 9001 quality management system. Each batch is checked for hardness, key dimensions and bond integrity, and a batch record accompanies the shipment. On request we can provide material data sheets, RoHS test reports, or arrange third-party inspection before delivery. We are also open to factory audits and pre-shipment visits.
What are your payment and shipping terms?
Payment terms are discussed case by case and typically follow common international practice for industrial goods, with details confirmed on the proforma invoice. We can ship by sea, air, or express courier depending on order size and urgency, and we work with freight forwarders who handle both LCL and full container loads. Packaging is chosen to protect the wheels during transit.
Do you offer a warranty, and what happens if a problem appears after delivery?
We stand behind the wheels we produce. If a unit shows a defect that traces back to material or workmanship, contact us with photographs and batch details, and we will investigate and work out a replacement or credit. Wear caused by conditions outside the agreed specification is a different situation, which is exactly why we confirm the operating parameters before production begins.
Ready to Discuss Your Kiln Cart Wheel Project?
Whether you need a small trial batch or a full container of customized heat resistant polyurethane wheels, we are glad to help. Send us your drawing, cart load and working temperature, and our team will come back with a professional recommendation and a competitive price. We welcome sample orders so you can test performance on your own kiln line before committing to volume. We are here to support your project from design through to delivery.
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