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Controlled position axle nut and method system to preload tapered roller bearings

  • US 5,560,687 A
  • Filed: 03/01/1994
  • Issued: 10/01/1996
  • Est. Priority Date: 03/01/1994
  • Status: Expired due to Fees
First Claim
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1. An axle nut system for preloading roller bearings comprising:

  • an axle having inner and outer roller bearings mounted thereon, said axle having an end portion, said end portion having threads thereon of a predetermined pitch which include outboard thread faces and inboard thread faces;

    a washer member mounted on said end portion of said axle, said washer member abutting against at least a portion of the outer bearing, said washer member and said axle each having means thereon for preventing relative rotational movement between said washer member and said end portion;

    an inner member mounted on the end portion of said axle and abutting against said washer member, said inner member having threads thereon of a predetermined pitch, said inner member establishing a compressive preload on said outer bearing through said washer member;

    an outer member mounted on said end portion of said axle and abutting against said inner member, said outer member securing said inner member on said axle and having means associated therewith for preventing relative rotational movement between said outer member and said end portion of said axle; and

    said inner member being retained against retrograde axial movement by said outer member while retaining the compressive preload condition on said outer bearing by backing off said inner member with respect to the axle by engaging said inner member thread with said inboard thread faces of the axle threads so that said inner member becomes tightly immovable with respect to the outer member while retaining the compressive preload condition through said washer member on said outer bearing.

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