TO 00591-30311-81

Frequently Asked Questions

Q: What are the bore and outer diameter specifications for the tapered cone bearing TO 00591-30311-81?
A: Part TO 00591-30311-81 is a tapered cone bearing with a 55 mm bore diameter and 120 mm outer diameter. The stamped steel cage and high load capacity specification indicate this bearing is designed for heavy-duty drive assembly applications in Toyota electric lift trucks where axial and radial loading are significant.

Q: Why does this bearing use a stamped steel cage instead of other cage materials?
A: Stamped steel cages in tapered cone bearings like TO 00591-30311-81 provide robust strength and cost effectiveness for high-load industrial applications. Steel cages maintain ball spacing reliably under the heavy shock loads encountered in electric lift truck wheel and drive assemblies, delivering predictable performance.

Q: What load capacity does the TO 00591-30311-81 support?
A: The TO 00591-30311-81 is rated for high load capacity applications. Do not rely on this bearing in service conditions below its rated load, as bearing preload and geometry are engineered for the specified load range. Consult Toyota lift truck assembly manuals for the exact dynamic load rating and application details.

Q: How do I identify the correct mounting orientation for this tapered cone bearing?
A: Tapered cone bearings have a specific load direction. The TO 00591-30311-81 must be installed with the cone against the load to function correctly. Improper orientation causes rapid failure and unsafe lift truck operation. Always refer to the original equipment mounting diagram before installation.

Q: Is this bearing compatible with non-Toyota electric lift trucks?
A: The TO 00591-30311-81 is an OEM Toyota bearing optimized for Toyota equipment specifications. While other brands like Crown or Raymond may use similar bearing dimensions, do not assume cross-compatibility. Verify bore diameter, outer diameter, and width measurements against your specific equipment documentation.