Product Description
CUP, BEARING
Frequently Asked Questions
Q: What is bearing cup SY43384 and where is it used?
A: SY43384 is the outer race or cup component of a tapered roller bearing assembly commonly found in electric lift truck wheels, load wheels, and drive mechanisms. The cup works with a tapered roller cone to support axial and radial loads during equipment operation.
Q: Which electric lift truck platforms use bearing cup SY43384?
A: SY43384 bearing cup is compatible with electric pallet jacks and lift trucks from Crown, Toyota, Raymond, Hyster, and other major manufacturers. Verify wheel type, bore diameter, and cup bore size against your equipment documentation before ordering.
Q: What material is bearing cup SY43384 manufactured from?
A: SY43384 is a hardened steel tapered roller bearing cup manufactured to ABEC or ISO 15 precision standards. The steel is carburized and ground to provide long wear life under high radial and axial loading typical in material handling equipment.
Q: How do I know if bearing cup SY43384 needs replacement?
A: Replace SY43384 if wheels produce grinding noise, lateral runout exceeds 0.015 inches, or visual inspection reveals spalling, pitting, or corrosion on the bearing surface. A failing bearing cup creates unsafe wheel operation and increases resistance to rolling.
Q: What is the service life of bearing cup SY43384?
A: SY43384 bearing cups typically last 4 to 8 years under standard warehouse operations with routine lubrication and inspection. Heavy loads, continuous operation, or contaminated grease reduce life to 2 to 4 years. Annual repacking with fresh bearing grease extends cup service life.
Q: Does bearing cup SY43384 require pre-load adjustment after installation?
A: Bearing cup pre-load specifications vary by equipment model and bearing configuration. Consult your truck service manual for correct pre-load settings and measurement procedures. Improper pre-load causes premature cup failure or excessive wheel drag.
