Load Roller Assembly for Yale YA55 Pallet Jack

Frequently Asked Questions

Q: What is the 550091329 load roller assembly used for?
A: The 550091329 is a factory-spec load roller assembly for Yale YA55 manual pallet jacks. It replaces worn load wheels that support pallet weight during transport. The assembly features polyurethane tread bonded to a steel core with a pre-installed bearing.

Q: What materials are in the 550091329?
A: The assembly uses polyurethane tread bonded directly to a hardened steel core. This construction provides wear resistance and consistent load support. The bearing is pre-installed to specification for the Yale YA55 series.

Q: Is the 550091329 compatible with Yale YA55 manual pallet jacks?
A: Yes. The 550091329 is designed specifically for Yale YA55 series compatibility. It is a direct replacement part. Use only for YA55 manual pallet jack load wheel positions.

Q: What are signs that a load roller assembly needs replacement?
A: Replace when wheels show flat spots, glazed surfaces, visible cracking in polyurethane, or when they no longer roll freely under load. Wheel noise, grinding, or pallet tilting during transport also indicate bearing or roller failure.

Q: How often should load roller assemblies be replaced in high-volume operations?
A: In high-volume warehouse environments, plan for replacement every 12-24 months. Lighter industrial use may extend life to 24-36 months. Cold storage and wet floor operations reduce service life by 20-40 percent due to polyurethane hardening and increased friction.

Q: How should load roller assemblies be stored when not in use?
A: Store in a cool, dry location away from direct sunlight and extreme temperatures. Protect from oil, grease, and chemical solvents which can degrade polyurethane. Store rollers horizontally to prevent bearing damage from sustained pressure.