Engineering and construction machineries are usually used in very tough conditions where require wear resistance, corrosion resistance, and impact resistance
Casting polyurethane proucts with these advantages can offer flexible customization , high performance to working conditions.They have become the preferred material for key vulnerable parts such as wheels, rollers, buffer parts of specialized equipment.
Advantages in Engineering & Construction Machinery Industry
- Fatigue and Weather Resistance : Specific polyurethane formulation used to reduce low built-up heat under high load and speed. It does not crack under long-term cyclic stress (e.g., the rotation of conveyor belt rollers), and its fatigue life is 3-4 times that of traditional plastics.
- Noise reduction, Non-mark and low rolling resistance
- High load-bearing capacity, cut & tear resistance, good resilience
- Operating temperature range: -40℃ (cold-region oilfields) to 120℃ (long-term, special formulation); no brittleness at low temperatures and no softening at high temperatures
Key Application
- PU wheels for shield tunneling machines
The polyurethane wheel used by the shield machine truck carries the entire shield machine, and the weight ranges from tens to hundreds of tons, which requires ultra-high load capacity of the wheel material. When the polyurethane wheel works on the cement segment, it requires the wheel surface material to be very wear-resistant, but also to protect the segment from being damaged.
- Excavator Hydraulic Polyurethane Breaker Damper，Track Bushings，Shock Absorber Cushion，Elastic Pad，Guide Plate
During excavator operation, the arm collides frequently and the tracks rub against the ground. Polyurethane breaker damper (hardness: 90-95A) can absorb collision impact (impact absorption rate > 70%), and the track bushings are resistant to sand and mud wear, extending the track replacement cycle.
- Crusher Liners/Jaw Plate Coatings, Vibrating screens are used for ore classification
When mining crushers process ores, components are eroded by high-hardness materials. PU liners can extend the crusher maintenance cycle.
- PU Conveyor Belt Scrapers/Rollers
Conveyor belts in food processing need to meet FDA food-grade standards. PU scrapers (food-grade formula) can prevent material residue, resist corrosion from food juices (e.g., fruit juices, sauces), and reduce the friction noise between the conveyor belt and rollers.
