SU 7X4X5-TSW-P

Frequently Asked Questions

Q: What does the TSW designation on the SU 7X4X5-TSW-P wheel mean?
A: TSW stands for Tapered Side Wall, which refers to the wheel profile design. The wheel sides angle inward from the outer edge toward the hub, creating a tapered cone shape. This design reduces material weight compared to straight-wall wheels and improves steering responsiveness on electric lift trucks. Tapered side wall wheels are standard for drive wheel applications. They are NOT interchangeable with straight-side or flat-profile wheels, so verify your truck requires TSW profile before ordering.

Q: Is the SU 7X4X5-TSW-P a press-on wheel and does it require an arbor press to install?
A: Yes, the -P suffix indicates this is a press-on wheel. Installation requires an arbor press, minimum 2-4 ton capacity, to safely seat the wheel onto the hub. Do NOT attempt to hammer or forcibly install this wheel by hand; the polyurethane bond will be damaged and the wheel may crack. Center the wheel on the hub carefully and apply even, steady pressure from the arbor press until the wheel shoulder sits flush against the hub. Remove the wheel puller slowly and check for full seating before releasing pressure.

Q: What is the difference between the SU 7X4X5-TSW-P and other 7 x 4 wheels in terms of hardness or traction?
A: The SU 7X4X5-TSW-P uses polyurethane material with standard industrial hardness appropriate for drive wheel service, typically Shore A 92-96 range depending on the specific batch. Traction is optimized for indoor concrete and tile floors. If your warehouse has oil or wet conditions, a softer polyurethane wheel (Shore A 90-92) may provide better grip. For slippery surfaces, confirm with the supplier whether a higher-traction elastomer alternative is available, as the standard TSW-P formulation is not optimized for wet or oily floor traction.

Q: Can the SU 7X4X5-TSW-P wheel be used on load wheel positions instead of drive wheels?
A: No. The TSW tapered side wall profile is engineered specifically for drive wheel applications. Using it on a load wheel position is inefficient and will cause accelerated wear. Load wheels require different profiles, typically straight-side or flat designs, with different bearing and material specifications. Always confirm whether your truck needs a replacement for drive wheel or load wheel position. Installing the wrong wheel type can damage the truck steering mechanism and reduce load stability.

Q: What is the maximum load rating for the SU 7X4X5-TSW-P drive wheel?
A: The SU 7X4X5-TSW-P is rated for electric drive wheel service with typical truck capacities between 2500 and 5000 pounds total truck load, depending on the number of drive wheels. A two-wheel drive truck distributes load across both wheels, so each 7 x 4 wheel carries roughly half the total truck capacity. Do not exceed the maximum truck load rating listed in your equipment manual. Overloading causes the polyurethane to deform, increases motor strain, and accelerates bearing wear. Check your truck nameplate for the exact capacity rating.

Q: How often should the SU 7X4X5-TSW-P wheel be inspected for wear and what are the replacement indicators?
A: Inspect drive wheels monthly for flat spots, chunks, or uneven wear patterns. Replace the wheel when the polyurethane wears to 25 percent of original thickness or when you observe tread depth reduction to 0.25 inches. Visual wear indicators include brown steel showing through the polyurethane, visible cracks, or loss of grip. Worn wheels increase slipping, reduce steering control, and force the motor to work harder, reducing battery runtime. Average drive wheel lifespan is 12-18 months under normal warehouse use. Worn wheels should be replaced immediately to prevent safety hazards and equipment damage.