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 THRUST BEARINGS

Table 1 Bearing type Thrust nedddle
roller bearing
(Cage assembbly) Washer Thrust roller bearing

Thurst washer	Housing washer	Shaft washer	Complete bearing	Cage assembly
NTB	AS	GS	WS	AZ	AZK

Thrust needle roller bearing

these bearing are a combintion of an accurately pressed steel plate cage with a hardened surface and needle rollers with a diameter variation per unit container of less than 2 um. They have the rigid structure and the pockets for lubricating oil. They have the lowest sectional height among thrust bearing so if substituted for conventional metal thrust washers, they display a low friction factor and can withstand high rotational speeds. There are thin shaft washers (WS), housing washers (GS) and ultra-thin(1 mm) thrust washer (AS) for the bearing rings, and they can be frelly combined to suit the purpose. These bearing are normally used with inner surface guides.

Thrust roller bearing

These bearing come in the complete bearing (AZ series) and the cage assembly (AZK series) The complete bearing is composed of cage and clyindrical roller assembly (AZK series) shaft washer (WS series) and housing washer (GS series). The cage has a special precise structure and the very rigid, and the radailly arranged cylindrical roller are guided by thecage. They can withstand heavyloads at high rotational speeds. Especially, the accuracy of the height H is high and these bearing are suitable for use in machine tools, super high-pressure