Controlled position axle nut and method system to preload tapere

Details Controlled position axle nut and method system to preload tapere Controlled position axle nut and method system to preload tapere

1994-03-01

1996-10-01

Stormer, Russell D.

Land vehicles: wheels and axles

Wheel

Hub

3011241, 384517, 384562, B60B 2100

Patent

active

055606873

ABSTRACT:
The spindle ends of an axle of conventional design are provided with either right hand or left hand threads to receive respective axle nuts in combination with special lock ring fasteners. A nut of standard configuration used for tapered roller bearing adjustment and hereafter described as the adjustment nut is threaded into position having torque applied to it in a controlled manner to achieve specific preload bearing pressure against the inner race of the outer wheel bearing through a washer whose internal tab projects into the spindle keyway after which a threaded lock ring is rotated into contact with the adjustment nut. Having achieved positive positioning of the threaded lock ring in bearing contact with the adjustment nut, a retainer is installed to secure the lock ring in position on the threads of the axle spindle preventing further rotational movement. With the threaded lock ring secured in position to prevent any outward movement of either the wheel assembly components or the inner adjustment nut, the adjustment nut is rotated in the opposite direction by which it was installed until it jams forcibly against the threaded lock ring. With this rotational movement of the adjustment nut, the original bearing pressure or preload exerted outward against the adjustment nut is transferred and begins to bear against the threaded lock ring. Because of this action, the adjustment nut is converted from a load bearing fastener to that of a spacer and its new purpose is to control the spatial relationship between the inner race of the outer bearing and the threaded lock ring. Even with additional rotational movement and application of a specified amount of torque to the adjustment nut, the original preload bearing pressure is retained, but a jammed condition develops between the adjustment nut and the threaded lock ring making the installation safely secure for highway operations.

REFERENCES:
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patent: 5174839 (1992-12-01), Schultz et al.
patent: 5190355 (1993-03-01), Hobbie et al.
"Means to Accurately Install Tapered Roller Bearings", SAE Technical Paper, George Hagelthorn, Nov. 1994.

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