Product Description
Load Wheel Assembly
Specifications: 3.250 inch diameter x 3.125 inch width (3.250" x 3.125" | 3.25 x 3.13 wheel | 3-1/4 x 3-1/8 | 82.55mm x 79.38mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 3.125 |
| Tread Profile | 1/4 Radius |
| Bore Depth | 0.968 |
| Hub Width | 3.125 |
| Bore Outside Diameter | 2.0467 |
Frequently Asked Questions
Q: What does the SU 818-A load wheel assembly include?
A: The SU 818-A is a complete pre-mounted load wheel assembly. It includes a 3.25 inch diameter by 3.125 inch width Cushothane XL wheel mounted on a hub with deep groove ball bearings on both sides. The bore is ready to slide onto your equipment axle. No pressing or hub mounting is required. This is a plug-and-play replacement for most lift trucks and platform trucks.
Q: How do I install the SU 818-A on my lift truck?
A: Remove the axle bolt or cotter pin holding the existing load wheel. Slide the wheel assembly onto the axle until it seats fully against the truck frame. Reinstall the axle bolt and tighten snugly, or secure with a cotter pin and castle nut depending on your equipment design. Spin the wheel to verify it rotates freely and does not rub or wobble. Installation takes 5 to 10 minutes per wheel.
Q: What axle bolt and hardware specifications does the SU 818-A require?
A: The SU 818-A uses a 3/8 inch or 1/2 inch axle bolt depending on your lift truck model. Refer to your equipment manual for exact bolt size and torque specification. Typical torque is 20 to 30 foot-pounds. Many trucks use a castle nut with a cotter pin instead of a solid bolt. Do not over-tighten as this binds the bearings. Under-tightening causes wheel wobble and premature bearing wear.
Q: Can I repair or replace just the wheel if the SU 818-A hub is still good?
A: Yes, if the hub and bearings are in good condition with no play or noise, you can order the bare SU 818 wheel and press it onto your existing hub using a hydraulic wheel press. However, if you hear squeaking, grinding, or feel wobble, replace the entire SU 818-A assembly. Do not reuse a hub with damaged bearings as this will cause the new wheel to fail prematurely.
Q: How long does the SU 818-A load wheel assembly last?
A: The Cushothane XL wheel typically lasts 4 to 8 years in normal indoor use. The bearings and hub can last 7 to 12 years if kept clean and lubricated. Outdoor use, wet conditions, or exposure to oils and solvents reduces lifespan. Inspect for wear every 6 months. If used in heavy industrial environments with chemical spills or extreme temperatures, plan to replace every 3 to 5 years.