“82A High-Elasticity Polyurethane (PU) wheels are professional-grade industrial wheels designed to balance noise reduction, shock absorption, and superior grip. ”
82A High-Elasticity Polyurethane (PU) wheels are professional-grade industrial wheels designed to balance noise reduction, shock absorption, and superior grip. On the Shore A hardness scale (0-100), common office chair casters rate around 90A-95A (harder), while automotive tires typically range from 60A-70A (softer).
At 82A, these wheels are slightly firmer than a car tire but softer than standard hard industrial wheels (95A). This optimal hardness allows the wheel to undergo micro-elastic deformation under pressure, significantly increasing the contact surface area.
Core Performance Advantages
Exceptional Noise Reduction: Since 82A is considered medium-soft, its acoustic benefits stem from two primary factors:
Superior Shock Absorption: When a stacker crane travels at high speeds, the 82A PU material acts as a "micro-shock absorber." It absorbs impacts caused by rail joints or minor surface irregularities, reducing resonance triggered by metal-on-metal contact.
Flexible Contact Surface: The softer tread increases the instantaneous contact area with the rail, dampening friction noise and high-pitched squeals during operation.
High Resilience: High elasticity ensures the material returns to its original shape almost instantly after deformation. This not only reduces rolling resistance but also prevents the development of "Flat Spots" when the wheel remains stationary under load for extended periods.
Superior Grip and Traction: Compared to harder wheels, the 82A compound offers a higher coefficient of friction. This allows the wheels to grip the rail firmly during emergency stops, rapid acceleration, or high-speed travel, effectively preventing slippage and improving positioning accuracy.
Floor Protection: Its inherent flexibility ensures that the wheels do not leave scratches or cause structural wear on various surfaces, particularly epoxy floors or precision steel rails.
Application Analysis: Stacker Cranes
Stacker Cranes (AS/RS) are characterized by their great height and high operating speeds, demanding extreme stability and noise control.
As Drive/Travel Wheels: 82A wheels absorb impacts at rail junctions, mitigating the swaying of the mast. This is critical because the taller the mast, the more bottom vibrations are amplified at the top.
As Guide Wheels: When used for lateral guidance on the mast, 82A wheels provide smooth side buffering. This ensures the equipment runs precisely within the aisle without generating piercing metal friction noises.
Conclusion
For automated warehousing projects pursuing high performance and low noise, the 82A High-Elasticity PU wheel does more than just solve noise interference; it protects the mechanical structure through its unique physical properties. While load capacity limits must be considered for extreme heavy-duty applications, it is the ideal solution for enhancing operational quality in most light-to-medium and high-frequency stacker crane systems.
Ready to Silence Your Warehouse and Boost Efficiency? Contact our engineering team today for a technical consultation or a customized quote.
