Patent ID: 11879502
Assignee: nan
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A method of preloading bearings in a wheel assembly said method comprising:
i. preparing an axle with roller bearings and races, said axle having a threaded bolt stud in an outside end;
ii. assemble said preload assembly by:
b. inserting a threaded bolt into said threaded bolt stud;
c. sliding an anti-rotational washer over said threaded bolt to interface with said axle on a recess side of said anti-rotational washer;
d. sliding a serrated edge locking washer against said anti-rotational washer;
e. threading a compression head of said threaded bolt against a threaded locking nut and further thread the threaded locking nut against said serrated edge locking washer, said anti-rotational washer, and said roller bearings; wherein said threaded bolt has a predetermined length, a threaded shaft having a predetermined diameter, and an enlarged head which comprises said compression head and a center mounted hex head, said compression head being larger in diameter than said hex head, said compression head further having a channel surrounding said hex head forming a wall around said hex head, there being a slot formed in said wall to receive a locking tab, and an outside surface of said compression head having a plurality of helical threads thereon; wherein said anti-rotation washer has a center opening which is larger than said threaded bolt and enlarged head, but smaller than the axle, said anti-rotational washer further having two side surfaces, an inside surface and an outside surface, said inside surface being the recess side and having a shallow recess larger in diameter than said axle said outside surface being a raised surface having a diameter larger than said axle, said center opening having contained therein a first locking tab that aligns with said slot in said wall; wherein said serrated edge locking washer has a second locking tab; and wherein said threaded locking nut has a center opening and, a shallow outer profile, and at least four locking notches in an outer edge thereof;
f. use a torque wrench to tighten said threaded locking nut to a pre-prescribed torque.