Product Description
CUP, BEARING
Frequently Asked Questions
Q: What is the LM4AHT8209 bearing cup and where is it installed?
A: The LM4AHT8209 is a tapered roller bearing cup used in wheel hub assemblies and steering knuckles on electric lift trucks. It serves as the inner race of a tapered roller bearing, providing a precision surface for rolling element contact under axle loads.
Q: Is the LM4AHT8209 compatible with my equipment?
A: The LM4AHT8209 is compatible with Crown, Toyota, Raymond, Yale, and Hyster electric lift trucks. Confirm your specific model, serial number range, and axle type match this part before ordering.
Q: How does the LM4AHT8209 differ from other bearing cups?
A: The LM4AHT8209 is precision-ground and hardened to exacting tolerances for consistent performance in tapered roller bearing assemblies. It handles radial and axial loads simultaneously, making it suitable for steering and load-wheel applications.
Q: What is the maintenance requirement for bearing cups like the LM4AHT8209?
A: Bearing cups require regular greasing through the hub fitting, typically every 40 to 60 operating hours. Proper lubrication prevents friction, heat buildup, and premature wear. Replace the cup if you detect axial play, grinding noise, or excessive heat.
Q: What material is the LM4AHT8209 made from?
A: The LM4AHT8209 is manufactured from case-hardened chrome steel. This material provides superior hardness, load capacity, and fatigue resistance necessary for supporting repeated steering and drive loads.