Our cast polyurethane gears are solutions to challenges that rubber, steel, or plastic can’t address. Engineered for resilience, they excel in impact, chemical, and abrasion resistanc. Their teeth flex to accommodate slight misalignment while retaining the rigidity needed for reliable operation, and custom durometers can be designed to shear intentionally, protecting more costly equipment components. With stable chemical and physical characteristics across oils, water, acids, and alkalis, these gears thrive in extreme conditions, enduring temperatures from -40℃ to 160℃, and featuring wear, ozone, and compression resistance that ensures long-term performance.
Urethane gears and sprockets are defined by their longevity, quiet operation, and cost-effectiveness, making them ideal for chemical, mining, construction, automotive, and agricultural machinery. Custom options shine here: they can integrate materials like stainless steel or UHMW, and additives modify the urethane to prevent or dissipate static. Manufactured via casting, machining, or molding, they adapt to any quantity—from prototypes to bulk orders—with tailored sizes, shapes, and colors. Whether for industrial heavy use or household mechanical parts, these components balance high strength with malleability, delivering precision functionality even in the harshest environments.
Customization Options:
Customization Parameter
Specifications
Applicable Scenarios
Hardness
30A-75D Shore
Soft urethane gears for medical pumps; hard polyurethane sprockets for mining conveyors
Size & Tolerance
Diameter: 10-500mm; Molded or machined
Precision polyurethane gears for 3D printers; large urethane sprockets for agricultural machinery
Standard polyurethane sprockets for roller chains; custom gears for unique machinery
Application of Polyurethane Gears & Sprockets
- Machinery and automation: PU gears are used in various types of machinery to transmit power, including in automated systems.
- Conveyor systems: They are employed in conveyor belts for both power transmission and as sprockets for the chains.
- Manufacturing: They can be used in various manufacturing processes for power transmission and motion control, such as in stirring, cutting, and measuring mechanisms.
- Logistics: Quiet polyurethane sprockets in automated warehouses.
- Agriculture: Weather-resistant polyurethane sprockets for harvesters.
- Robotics: Low-friction urethane gears in precision joints
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Advantages of Polyurethane Gears & Sprockets
- High impact resistance: Absorbs 30% more shock than metal gears.
- Self-lubricating: Reduces maintenance vs. uncoated metal sprockets.
- Chemical resistance: Withstands oils, cleaners, and mild acids.
- Low noise: Operates 15-20dB quieter than steel sprockets.
- Lightweight: 40% lighter than aluminum gears for energy efficiency.
Customer Cases
Case 1: An Agricultural Machinery Manufacturer (Harvester Drum Gears)
Problem: Original rubber gears cracked in 1 month due to pesticide corrosion; metal gears wore out in 3 months from straw abrasion.
Solution: Custom 70D ester-based PU gears with steel cores, plus pesticide-resistant properties and wear-resistant surface treatment.
Result: Gear lifespan extended to 6 months; downtime for repairs during peak farming season dropped from 5 to 1 time, saving 40,000 yuan annually.
Case 2: A Food Processing Plant (Bread Conveyor Line Gears)
Problem: Original metal gears trapped dirt and failed food hygiene audits; regular plastic gears deformed in 2 months under 100℃ cleaning water.
Solution: 60D FDA-compliant PU gears with smooth, non-porous surfaces and a 120℃ high-temperature resistant formula.
Result: Passed EU food hygiene audits; cleaning efficiency improved by 50%; gears remained undamaged under high-temperature cleaning, with a lifespan of 10 months.
Case 3: A Mining Enterprise (Conveyor Belt Gears)
Problem: Original metal gears chipped easily from ore impact (needing 2 repairs/month); regular PU gears broke in 15 days due to insufficient load capacity.
Solution: 75D high-rigidity PU gears with stainless steel cores, designed with an overload shear structure to protect motors.
Result: Gear chipping failures reduced by 90%; lifespan extended to 6 months; maintenance costs cut by 70%.
What is the size range of your solid polyurethane ball?
Standard 6mm–300mm; custom sizes for mining screen cleaning / sports balance boards.
Is your urethane ball food-grade?
Yes, FDA-compliant options for food processing check valves and valves.
Is it oil and chemical resistant?
Yes, suitable for industrial oil systems, chemical relief valves, and food processing.
What hardness is best for urethane balls ?
60A–85A Shore, balancing abrasion resistance and equipment protection.
Are you a manufacturer?
Yes. We are manufacturer. Welcome to visit our factory.
Can you introduce your customized process ?
Yes. The process includes Share needs → design & quote → prototype (opt) → production → delivery.
How do you control your product quality?
We have 10 inspectors to carry out raw material inspection, process control ,first article inspection and final inspection.
How do you monitor the production process to avoid delayed delivery?
We use the ERP system to execute orders, and can check the order status and expected delivery time at any time.
What is warranty of products?
All of products with 3-6 months guarantee (except very frequently wearing parts).
How do you deal with after sales service?
We will response in 24 hours with solutions such as replacement or reworking.
How do you deal wtih customers' molds?
We have dedicated personnel to sort out and maintain molds regularly.
What about the lifespan of molds?
20,000 times for compressions molds and 30,000 time for casting molds
How long can you keep customers' molds for free?
Due to the large quantity of molds, we can keep the molds for free for 2 to 3 years even if no order.
If the molds are damaged or reach the lifespan , who will be responsible for it ?
Customers only need to pay mold cost once. We will cover the cost if molds are damaged or reach the lifespan.
