551-6800: Needle Roller Bearing

Description: A Needle Roller Bearing is a type of roller bearing that uses cylindrical rollers with a small diameter, which are called needles, instead of the larger balls found in other types of bearings. The needles are held in place by a cage or retainer, which keeps them evenly spaced and prevents them from contacting each other. Attributes: • Provide high radial stiffness. • Designed to operate in high-temperature environments. Applications: A Needle Roller Bearing supports the high radial load in the shaft of a hydraulic pump, mainly used in Cat 320D2, 323D3, 320D3, 320D3 GC, and 320D2 L Excavator.