SU 9135-EZ

Frequently Asked Questions

Q: What is the difference between the SU 9135-EZ and standard load wheels?
A: The SU 9135-EZ features precision-sealed bearings and a 95A durometer polyurethane tread, making it higher durability than basic wheels. The sealed bearing design reduces maintenance and extends wheel life in demanding warehouse environments. The 95A durometer rating provides a balance between tread hardness and floor grip. Standard wheels often lack sealed bearings and have lower durometer ratings. The SU 9135-EZ is rated for electric pallet truck applications requiring reliable performance and minimal downtime.

Q: Are the SU 9135-EZ bearings sealed and what does this mean for maintenance?
A: Yes, the SU 9135-EZ comes with factory-installed precision-sealed bearings. Sealed bearings are pre-lubricated and protected from dust, moisture, and contamination. This design eliminates the need for bearing repacking or scheduled lubrication. Sealed bearings extend service life significantly compared to open bearings. In dirty or wet warehouse environments, sealed bearings perform better and require no maintenance beyond wheel rotation inspections. Do not attempt to disassemble or relubricate sealed bearing assemblies, as this will damage the seals and compromise performance.

Q: What does the 95A durometer rating mean and how does it affect performance?
A: The 95A durometer rating indicates the hardness of the polyurethane tread material on a Shore A scale. A 95A rating provides good cut and abrasion resistance while maintaining reasonable grip on smooth concrete floors. Higher durometer wheels are harder and last longer but may provide less traction. Lower durometer wheels are softer, grippier, but wear faster. For most warehouse and light outdoor use, 95A is a balanced choice. If your floors are very smooth or slippery, consider a softer option. If cuts and tears are a concern, a 95A or higher rating is appropriate.

Q: Is the SU 9135-EZ a direct replacement for my existing 3.25 x 5 wheel?
A: The SU 9135-EZ has a 3.250 inch outside diameter and 5 inch width, so it will fit on any electric pallet truck or lift platform currently equipped with a 3.25 x 5 wheel. Confirm your existing wheel dimensions and bore specifications match the SU 9135-EZ before purchase. The inside diameter is 1.938 inches. If your truck currently uses a different wheel size or has a different bore configuration, this wheel will not fit. Check your equipment manual or measure your current wheel to verify compatibility.

Q: How should the SU 9135-EZ sealed bearing assembly be installed?
A: Installation is straightforward for sealed bearing wheels. Slide the wheel onto the axle shaft, ensuring the bore inner diameter (1.938 inches) seats fully on the shaft. Install mounting washers and retention hardware (usually clips or cotter pins) to secure the wheel axially. Do not force the wheel onto the shaft. If resistance is high, check that the shaft diameter matches the bore specification. Tighten all fasteners firmly but do not over-torque, as this can damage sealed bearing seals. Spin the wheel by hand to verify smooth rotation with no binding. The wheel should rotate freely without noise.

Q: What is the expected lifespan of the SU 9135-EZ wheel in continuous use?
A: Under typical warehouse conditions with standard pallet loads and smooth floors, the SU 9135-EZ with sealed bearings typically lasts 3 to 5 years or 2,000 to 3,000 operating hours. Extended life compared to non-sealed wheels is due to sealed bearing protection and 95A durometer hardness. Actual lifespan varies with load weight, floor surface texture, and usage patterns. Heavy loads or rough outdoor surfaces will reduce life. Inspect wheels every 6 months for flat spots, cracks, tread separation, or bearing noise. Replace when tread wear exceeds 20 percent of original depth or visible damage develops.