SU 10 X 4 X 6.5-SF-P

Frequently Asked Questions

Q: Is SU 10 X 4 X 6.5-SF-P polyurethane compatible with electric lift trucks rated for solid rubber tires?
A: No. Do not mix tire materials on the same truck. SU 10 X 4 X 6.5-SF-P is a high-durometer polyurethane tire (85 Shore A) designed for smooth indoor floors with minimal marking. Solid rubber tires compress differently under load and provide different braking characteristics. If your truck originally ran solid rubber, switch the complete drive and load wheel set to polyurethane. Verify your truck manual or contact the OEM to confirm polyurethane compatibility before installation.

Q: What is the load capacity of SU 10 X 4 X 6.5-SF-P on standard 24 inch load centers?
A: The SU 10 X 4 X 6.5-SF-P carries the same nominal capacity as OEM equivalents, typically 3500 to 4000 lb per drive wheel depending on truck model. Do not exceed the tire load rating by stacking weight beyond the truck nameplate capacity. Check your truck nameplate for exact capacity at 24 inch load center. Overloading causes premature polyurethane hardening and core slippage within 2 to 3 years.

Q: How do you diagnose if SU 10 X 4 X 6.5-SF-P tires are worn out and need replacement?
A: Inspect the smooth flat tread surface. If you see flat spots, visible wear lines, or cracks forming in the polyurethane compound, replace the tire. Load test by lifting 500 lb and rolling forward. If the truck pulls to one side or feels sluggish, one tire is likely delaminating from the core. Measure compression: press your thumb firmly into the tread. If it does not rebound within 2 seconds, the polyurethane has hardened and the tire should be replaced. Typical service life is 3 to 5 years depending on hours and floor conditions.

Q: What tools and steps are required to press SU 10 X 4 X 6.5-SF-P onto a 6.5 inch steel hub?
A: You need a press rated for minimum 10 to 15 tons and bearing blocks sized for 6.5 inch hubs. Clean the hub bore with a wire brush to remove rust and debris. Apply a thin layer of silicone lubricant to the hub bore to aid installation. Position the tire vertically in the press. Align the hub so it enters the tire bore concentrically. Press slowly at 2 to 3 inches per minute until the tire seats fully on the hub. Do not exceed 20 tons of pressure. Verify the tire sits flush with no gaps. Allow 24 hours for the polyurethane to set before operating the truck.

Q: Does SU 10 X 4 X 6.5-SF-P meet non-marking requirements for polished concrete floors?
A: Yes. The smooth flat polyurethane tread and 85 Shore A durometer hardness deliver non-marking performance on polished concrete, epoxy, and sealed floors. Tire marking depends on floor cleanliness and humidity. If floors are damp or have oil residue, mark some discoloration may occur even with non-marking tires. Clean the floor and tire regularly to maintain non-marking performance. Avoid dragging or sharp turns which can still leave marks regardless of tire material.

Q: What maintenance steps extend the life of SU 10 X 4 X 6.5-SF-P polyurethane tires?
A: Clean tires weekly with mild soap and water to remove floor oils and grit that accelerate wear. Rotate drive and load wheels every 6 months to equalize tread wear. Check hub bore tightness monthly because polyurethane tires can slip on hubs under heavy loading. If you notice the hub spinning inside the tire, immediately remove the tire and repress it or replace it. Store replacement tires indoors at room temperature away from direct sunlight. Exposure to UV light and heat hardens polyurethane over time. Inspect tread depth and look for surface cracks every 3 months.