00591-00639-81

Frequently Asked Questions

Q: What is the 00591-00639-81 bearing cup designed for?
A: The 00591-00639-81 is a Toyota OEM tapered roller bearing cup engineered for electric lift truck wheel bearing assemblies. It works with the corresponding bearing cone to support wheel rotation and manage radial and axial loads in powered material handling equipment.

Q: What material is the 00591-00639-81 bearing cup made from?
A: The 00591-00639-81 is manufactured from high-carbon steel with a hardened race surface. This material provides the hardness and load capacity necessary for electric lift truck wheel applications where bearing loads can be substantial.

Q: Which Toyota electric lift truck models use the 00591-00639-81?
A: The 00591-00639-81 is a genuine Toyota part verified for fitment in manufacturer-specified electric lift truck models. Confirm your truck model and serial number to ensure this is the correct bearing cup replacement for your equipment.

Q: Can the 00591-00639-81 bearing cup be reused if the wheel is removed?
A: The bearing cup can often be reused if it is not damaged during removal and shows no scoring or wear on the race surface. However, if the bearing cone is replaced, it is best practice to replace the cup as well to ensure optimal bearing performance and lifespan.

Q: What is the proper installation procedure for the 00591-00639-81?
A: The bearing cup is typically pressed into the wheel hub using a bearing press. Careful alignment and pressure application prevent damage to the cup bore. Consult your equipment manual or contact us if you lack the tools or experience for proper installation.