Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What does the A designation mean on the SU S258-EZ-A?
A: The A designation indicates that this is a complete assembly including the wheel, Delrin bearing, and axle-ready mount hardware. Unlike the wheel-only SU S258-EZ, the Assembly version arrives ready to bolt onto your lift truck without sourcing additional components. Use this when replacing an entire wheel assembly rather than just the tread wheel.
Q: Can I use the SU S258-EZ-A assembly to replace a different assembly type?
A: Not without verification. The SU S258-EZ-A assembly is engineered for specific lift truck mounting interfaces and axle configurations. Do not assume it will fit your truck just because the wheel diameter appears correct. Measure your axle bore, axle diameter, and mounting bolt pattern. Incompatible mounting will damage the bearing seat and create unsafe wheel play.
Q: Is the SU S258-EZ-A bearing pre-lubricated?
A: Yes. The Delrin bearing in the SU S258-EZ-A comes pre-lubricated with a synthetic grease suitable for indoor warehouse use. Do not disassemble the bearing to relubricate; this exposes internal surfaces to contamination. If bearing noise develops after installation, the bearing itself has failed and must be replaced as a unit. Bearing replacement requires specialized tools and is not field-serviceable.
Q: What is the installation process for the SU S258-EZ-A?
A: Raise the lift truck on a safe jack stand. Remove the cotter pin and axle nut from the existing wheel assembly. Slide the old assembly off the axle. Clean the axle shaft with a wire brush to remove rust and debris. Slide the new SU S258-EZ-A assembly onto the axle, ensuring the bearing seats fully. Reinstall the axle nut and torque to specifications (typically 45 to 60 foot-pounds). Secure with a new cotter pin. Test wheel rotation before lowering the truck.
Q: What is the expected service life of the SU S258-EZ-A?
A: On epoxy or smooth concrete floors in light-duty applications, expect 3 to 4 years of service. The lifespan depends primarily on the 85A polyurethane tread wear, not the bearing or assembly structure. If the bearing develops play or noise within 2 years, contact the supplier; this indicates a manufacturing defect covered under warranty. Most premature failures are due to improper installation or truck misalignment.