Product Description
POLY L/W (95A) 5.50 X 3.75
Frequently Asked Questions
Q: What does the SU S184 POLY L/W (95A) 5.50 X 3.75 specification mean?
A: SU S184 is a polyurethane load wheel with a 95A durometer rating, 5.50 inch outside diameter, and 3.75 inch width. The 95A durometer indicates medium-soft polyurethane suitable for smooth concrete floors in indoor warehouse and manufacturing environments. The larger 5.50 inch diameter compared to smaller wheels like the SU S163-XL-A2 means it rolls more easily over minor floor irregularities and provides slightly lower rolling resistance.
Q: Is the SU S184 compatible with electric lift trucks that originally came with 5.50 inch diameter load wheels?
A: The SU S184 fits trucks designed for 5.50 inch diameter load wheels, but you must verify the width, bore diameter, and bearing configuration match your truck. Do not assume that any 5.50 inch wheel is a direct replacement. Check your original wheel part number or truck documentation to confirm the width specification (3.75 inch) and bore size. Contact the manufacturer with your truck model and serial number for a cross-reference before purchasing.
Q: How does the 95A durometer of the SU S184 compare to harder or softer polyurethane wheels?
A: 95A durometer is mid-range softness for load wheels. Softer wheels (90A-92A) provide better shock absorption and grip but wear faster, especially on rough floors. Harder wheels (100A-110A) last longer but offer less cushioning and more vibration. The SU S184 at 95A is a balanced choice for general warehouse use on smooth to moderately textured concrete. If your floor is very rough or your truck carries heavy loads, consider a 100A+ durometer. For fine goods that require vibration dampening, choose a softer 90A-92A option.
Q: What is the installation process for replacing wheels with the SU S184 model?
A: Safely lift the truck using a properly rated jack. Remove the retaining bolt, cotter pin, or snap ring from the axle, then slide off the old wheel. Clean and inspect the axle shaft for wear, corrosion, or bending. Install the new SU S184 wheel, ensuring the bore seats fully against the axle shoulder. Reinstall the retaining hardware and torque to the truck manufacturer specification (typically 120-180 ft-lbs depending on axle diameter). Secure with a cotter pin if applicable. Test that the wheel rotates freely without wobbling before lowering the truck.
Q: How long does an SU S184 wheel typically last in normal warehouse operation?
A: SU S184 wheels typically last 2-4 years depending on daily runtime, load, floor conditions, and maintenance. A truck running 8 hours per day on smooth concrete in a temperature-controlled warehouse will achieve longer life than one used outdoors or on rough floors. Monitor tread wear quarterly. When you observe visible wear grooves or flat spots, plan a replacement within the next service cycle. Do not wait for catastrophic failure as a worn wheel increases driver fatigue, reduces load stability, and stresses axle bearings.
Q: Does the SU S184 require grease or oil lubrication of the bearings?
A: The SU S184 specification does not indicate bearing type. Verify whether your wheel uses sealed ZZ bearings (pre-greased, no maintenance needed) or open/greaseable bearings. If greaseable bearings are installed, lubricate with a light polyurea-based bearing grease every 6 months or per your truck manual. Do not use heavy industrial grease as it will overheat in load wheel applications. If you see grease leaking from the bearing area, the bearing seal has failed and the wheel assembly must be replaced.