Cup Bearing

Frequently Asked Questions

Q: What is a bearing cup and which equipment does this fit?
A: A bearing cup is the outer stationary race of a bearing assembly. SKU 00591-04602-81 is engineered for electric lift trucks from manufacturers such as Crown, Toyota, Raymond, and Jungheinrich. Confirm your truck model and serial number for compatibility.

Q: Can I replace just the cup without replacing the entire bearing assembly?
A: No. The bearing cup must be replaced as part of the complete bearing assembly or matching cone and cup set. Mixing worn and new components will create improper seating and premature failure.

Q: What failure symptoms indicate a defective bearing cup?
A: Watch for grinding or squealing sounds during load handling, excessive wheel wobble, lateral play in the wheel assembly, or uneven tire wear. These signs indicate bearing cup wear and the need for replacement.

Q: What material is this bearing cup made from?
A: This bearing cup is precision-forged steel with hardened and polished internal races. The material provides durability under heavy load and repeated cycling in electric material handling equipment.

Q: How does this cup pair with other bearing components?
A: This cup is part of a tapered roller bearing assembly. It must be paired with the matching tapered roller cone, spacer, and seals for proper function. Use SKU 00591-04603-81 cone to complete the bearing set.

Q: What is the typical service life for this bearing cup?
A: Under normal electric truck operations, expect 3 to 6 years of service life. Heavy-duty or outdoor environments may shorten this interval. Regular inspection and lubrication maintenance extend bearing life.