Product Description
Cup, bearing
Frequently Asked Questions
Q: What is the 00591-35550-81 bearing cup and what is its function?
A: The 00591-35550-81 is a bearing cup used in electric lift truck systems. The bearing cup is the outer race of a tapered roller bearing assembly, providing the raceway surface for rolling elements and load support. It works in conjunction with a bearing cone (inner race) to distribute loads in motor, drive, or wheel assemblies.
Q: Which electric lift truck models and manufacturers use this bearing cup?
A: The 00591-35550-81 is a Toyota OEM bearing cup compatible with Toyota electric pallet jacks and walkie lift trucks. It is also used in equivalent systems from Crown, Raymond, Yale, Hyster, and similar manufacturers with compatible drive or wheel configurations. Verify your equipment model and bearing assembly type before ordering.
Q: What are the material and dimensional specifications?
A: The bearing cup is constructed from high-carbon chromium steel, hardened and precision-ground to provide a durable raceway. Exact dimensions, load ratings, and fit tolerances should be verified against your equipment technical manual or bearing assembly drawing to ensure correct installation and performance.
Q: Can a bearing cup be reused if the corresponding cone is replaced?
A: If the cup surface shows no visible wear, scoring, or corrosion, it may be reused with a new cone. However, if the cup exhibits wear patterns, pitting, or surface damage, both the cup and cone should be replaced as a set to ensure proper bearing clearance and load distribution. Inspect the cup under good lighting and verify with your technician before reuse.
Q: What preventive maintenance protects bearing cups?
A: Keep bearings properly lubricated per manufacturer specifications using the correct grease type and interval. Avoid water intrusion and corrosive environments, which can damage the raceway surface. Inspect periodically for debris or contamination in bearing seals. Replace bearing seals if they become damaged to prevent water and dirt ingress that accelerates cup deterioration.