Product Description
SU 9112 Aisle Guide Wheel for Superior Electric Pallet Jack, manufactured by Liftsplus.com. Features polyurethane tread bonded to ASTM A36 steel core, sealed deep groove ball bearing, 3.5-inch diameter, 2.00-inch width, and engineered for high-cycle service. Cross-reference: Superior SU9112.
Specifications
Material & Construction
| Core Material | ASTM A36 steel |
| Finish/Coating | Clear polyurethane over steel |
Part Numbers & Compatibility
| OEM Part Number | SU 9112 |
| Cross-Reference Part Numbers | Equivalent to Superior SU9112 |
Frequently Asked Questions
Q: What is the cross-reference part number for SU 9112?
A: SU 9112 is manufactured by Superior as an aisle guide wheel and is cross-referenced as Superior SU9112. When ordering, verify your Superior pallet jack model year (typically stamped on the frame or in the manual) to confirm fitment, as bearing and material specs can vary by production batch.
Q: How does the SU 9112 guide wheel differ from a load wheel?
A: SU 9112 is a guide wheel, not a load wheel. It is smaller (3.5 inch diameter versus 6 inch on load wheels) and narrower (2.00 inch width), and is positioned laterally to center the pallet in the aisle. Guide wheels carry minimal load—typically under 200 lbs—and are not rated for vertical load support. Installing a guide wheel under load will cause rapid bearing failure.
Q: What material is the SU 9112 core and can it rust?
A: SU 9112 core is ASTM A36 steel with a clear polyurethane finish coating. The coating prevents surface rust in normal conditions, but damage or wear through the coating exposes bare steel. Inspect quarterly for chipped coating and tread separation. If rust is visible on the hub, replace the wheel—corrosion weakens the bore fit and bearing retention.
Q: How do you diagnose a seized or sticking SU 9112 guide wheel?
A: If the guide wheel does not spin freely or feels sticky, the sealed deep groove ball bearing is likely dirty or dry. Lift the truck and spin the wheel—if it stops abruptly or requires excess force, do not continue operation. The seal cannot be opened for cleaning; replace the entire wheel assembly. Continuing operation risks complete bearing lock and pallet misalignment.
Q: What is the maximum lifespan of the SU 9112 sealed bearing in high-cycle service?
A: In typical warehouse service with 400 to 600 daily cycles, sealed bearings in SU 9112 guide wheels last 18 to 36 months. Life depends on floor debris (dirt accelerates wear) and lateral load consistency. Inspect bearing noise and drag monthly. Replace proactively at 24 months in high-debris environments to avoid sudden guide wheel failure and pallet drift.