Product Description
Load Wheel Assembly
Frequently Asked Questions
Q: What does the XL designation mean on SU 351-XL-A?
A: XL indicates extra-large load wheel assembly with a wider tread and reinforced hub design. SU 351-XL-A handles 12,000+ pound concentrated loads on single wheels. Do not substitute standard SU 351-A for XL applications or wheel failure will occur under load.
Q: Is SU 351-XL-A compatible with my three-wheel electric lift truck?
A: SU 351-XL-A fits electric lift truck models with 8-inch bolt centers and 1.5-inch axle diameter. Check your truck manual for load wheel specifications. Three-wheel trucks typically use SU 375 or SU 375-A rear assemblies. Mixing XL front wheels with standard rear wheels will cause uneven handling.
Q: How do I know when to replace SU 351-XL-A wheels?
A: Replace wheels when tread depth falls below 0.25 inches or if you see flat spots, chunking, or sidewall cracks. If the truck pulls to one side or vibrates when raised, wheels are likely worn unevenly. Assembly lasts 2,000 to 4,000 operating hours depending on floor surface and load patterns.
Q: Can I replace just the wheel without removing the entire SU 351-XL-A assembly?
A: No. The wheel is pressed and bonded to the hub and cannot be safely separated. You must replace the entire assembly. Attempting to separate causes hub damage that makes reassembly impossible. Order full SU 351-XL-A assembly and swap the entire unit, which takes approximately 15 minutes with a wrench and jack.
Q: What is the maximum speed rating for SU 351-XL-A wheels?
A: SU 351-XL-A wheels are rated for truck travel speeds up to 8 miles per hour. Operating above this speed will generate heat, accelerate wear, and reduce wheel life by 30 to 40 percent. Verify your truck motor is governor-limited to prevent over-speeding.
Q: Does SU 351-XL-A work on both smooth concrete and rough warehouse floors?
A: SU 351-XL-A performs best on smooth sealed concrete. Rough textured or outdoor surfaces accelerate rubber wear and reduce life expectancy from 4,000 hours to 2,000 hours. Wet or oily floors may cause reduced traction but do not damage the wheel itself.