Product catalog Baler Gear Box John Deere baler Tapered roller Bearing JD9058/JD9121

John Deere baler Tapered roller Bearing JD9058/JD9121

- Tapered roller Bearing for Baler 349. 332. 339. Tractor 1000. 2000 series. Forage Harvester 5000 series

Part No: JD9058/JD9121
SKU: 103606

Application:

Spare parts for  Baler 349. 332. 339.  

Tractor 1000. 2000 series. 

Forage Harvester 5000 series 



What is Tapered Roller Bearing?

The inner and outer ring raceways are segment of cones and the rollers are tapered so that the conical surfaces of the raceways, and the roller axes, if projected, would all meet at a common point on the main axis of the bearing. This geometry makes the motion of the cones remain coaxial, with no sliding motion between the raceways and the OD of the rollers.

This conical geometry creates a linear contact patch which permits greater loads to be carried than with spherical (ball) bearings, which have point contact. The geometry means that the tangential speeds of the surfaces of each of the rollers are the same as their raceways along the whole length of the contact patch and no differential scrubbing occurs.

The rollers are stabilized and restrained by a flange on the inner ring, against which their large end slides, which stops the rollers from popping out due to the "pumpkin seed effect" of their conical shape.

The larger the half angles of these cones the larger the axial force that the bearing can sustain.

Tapered roller bearings are separable into a cone assembly and a cup. The non-separable cone assembly consists of the inner ring, the rollers, and a cage that retains & evenly spaces the rollers. The cup is simply the outer ring. Internal clearance is established during mounting by the axial position of the cone relative to the cup, although preloaded installations without clearance are common.



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