Engineering and construction machinery operate under extremely tough conditions with continuous exposure to abrasion, impact, moisture, chemicals, and heavy loads. Components must offer long service life and consistent performance even in demanding job sites such as tunnels, mines, infrastructure projects, and oilfield environments.
Cast polyurethane parts excel in these harsh environments. With wear resistance, impact absorption, corrosion resistance and flexible customizability, PU becomes the preferred material for wheels, rollers, bumpers and other high-stress components used in heavy-duty equipment.
Advantages in Engineering & Construction Machinery Industry
- Fatigue & Weather Resistance: Advanced polyurethane formulas minimize heat buildup under high load and high-speed rotation. PU does not crack under long-term cyclic stress (e.g., conveyor rollers and support wheels). Fatigue life is 3–4× higher than standard plastics.
- Noise Reduction, Non-Marking & Low Rolling Resistance: PU wheels and rollers reduce vibration, prevent floor damage and improve energy efficiency for large machinery and material-handling equipment.
- High Load-Bearing Capacity & Tear Resistance: Polyurethane maintains structural integrity under extreme load, resisting cuts, tears and chunking even when rolling over steel plates, concrete or abrasive debris.
- Wide Temperature Range: Suitable for -40℃ (cold-region drilling, oilfields) to 120℃ (engine-adjacent mechanical parts). No brittleness at low temperature and no softening at high temperature.
Key Applications
- PU Wheels for Shield Tunneling Machines
PU wheels on segment trucks must carry the full weight of the shield machine—often tens to hundreds of tons. The material provides ultra-high load capacity while delivering wear resistance and protecting the concrete segments from damage.
- Excavators: Polyurethane Breaker Damper, Track Bushings, Shock Cushions, Elastic Pads, Guide Plates
Excavators experience strong impact forces and abrasive wear. PU breaker dampers (hardness 90–95A) absorb >70% impact energy, and track bushings withstand mud, sand and gravel—extending service life and reducing replacement frequency.
- Crusher Liners, Jaw Plate Coatings & Vibrating Screen Components
Crushing equipment handles high-hardness ores. PU liners resist abrasive wear and extend the maintenance cycle compared to rubber or steel coatings.
- PU Conveyor Belt Scrapers & Rollers
PU scrapers prevent material buildup, reduce belt damage and lower noise. Food-grade formulas can also be used in agricultural machinery and food processing conveyors, resisting corrosion from organic acids, juices and cleaning chemicals.
Related Polyurethane Products for Construction Machinery
- Custom Polyurethane Wheels – High-load wheels for tunneling machines, forklifts, loaders and heavy equipment.
- Urethane Springs – Used in machine tools, stamping dies and vibration-absorbing mechanisms.
- Polyurethane Rollers – Durable rollers for conveyors, crushers, feeders and construction machinery.
- Polyurethane Bushings – Wear-resistant bushings for excavators, loaders, drilling and mining machines.
