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Automotive

TechTips

Volume 5 • Issue 1 Part 2 of a 3-Part Series

Maximizing bearing performance and life remains an objective throughout The Timken Company, from design teams and manufacturing associates to our field sales team and distributors. echTips helps you install and maintainTimken® bearings, seals and components to take full advantage of their performance and the systems in which they operate. For more information regardingTimken automotive products and services, visit www.timken.com or contact your local Timken distributor.

NEEDLE BEARING INSTALLATION

Guidelines for Proper Installation & Common Types of Damage Resulting from Improper Installation

Proper installation is critical if you want a drawn cup needle bearing to perform correctly in an applica- tion. Highlighted below are general guidelines that apply when installing a drawn cup needle roller bearing.

  • A drawn cup bearing must be

pressed into its housing.

  • An installation tool must be used

in conjunction with a standard press. The installation tool should:

  • -

    Have a back angle, around

15 degrees, on the shoulder

used to apply the press force to the bearing outer ring.

  • -

    Have a pilot to center and

guide the bearing.

  • -

    Have a ball detent on the pi-

lot if the bearing being installed is a full complement type.

  • -

    Be on the same axis as

the housing bore.

  • -

    Be made to specific dimensions,

based on the equipment manu- facturer’s recommendations.

  • The bearing must not be ham-

mered into its housing even if a proper installation tool is being used.

  • The bearing should not be pressed

tightly against a shoulder in the housing. If it is necessary to use a shouldered housing, the depth of the housing bore must be sufficient to ensure that the housing shoulder fillet and shoulder face clear the bearing.

If these guidelines are not fol- lowed, the bearing may be dam- aged during installation.

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