Browse Prior Art Database

SNAP RING RETAINED AXLE PINION TAIL BEARING

IP.com Disclosure Number: IPCOM000249377D
Publication Date: 2017-Feb-22
Document File: 3 page(s) / 188K

Publishing Venue

The IP.com Prior Art Database

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 55% of the total text.

SNAP RING RETAINED AXLE PINION TAIL BEARING

Description

This new design provides an alternative approach of preloading the pinion bearing in an axle or power transfer unit assembly. It replaces the conventional threaded fastener preload system. While this design is described in detail for this application, it can be used in other applications.

Traditional Approach

A traditional axle pinion gear assembly consists of an axle carrier (1) and an axle pinion gear (2) which supports the head bearing cone and roller assembly (3), bearing crush spacer (4), supporting tail bearing cone and roller assembly (5), and a pinion bearing retaining nut (6) threaded onto the shaft extending from the gear (2).

New Approach

This new design uses a retaining clip (snap ring) in place of the pinion nut to retain the inner race of the tail bearing onto the pinion shaft (although they are shown in the image below, the pinion threads typically present on the pinion shaft are not needed in this design).

Our new axle pinion gear assembly consists of an axle carrier (1) an axle pinion gear (2) which supports the head bearing cone and roller assembly (3), the tail bearing cone and roller assembly (5), the pinion tail bearing retaining clip (snap ring) (7), and an optional spring washer (8).

Method of assembly

The bearing stack is loaded to the proper bearing preload preferably with a hydraulic press, then a

select fit retaining clip (with or without a spring washer) is installed into a groove on the pinion shaft to retain the bearing. As a result, the pinion tail bearing inner race is held in position on the pinion gear with proper bearing preload.

The bearing preload can be applied using a hydraulic press or alternative method of...