Moog® EXCLUSIVE BELLEVILLE WaShEr DESIgn - Fme-Cat

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Moog® EXCLUSIVE BELLEVILLE WaShEr DESIgn - Fme-Cat
BULLETIN:
27 0 17 – R
MOOG® EXCLUSIVE
Belleville
washer design
Bearing Preload
PROBLEM:
SOLUTION:
Shortened Service Life/
Loose Steering
Moog® Premium
Belleville Washer Design
• Manufacturing
tolerance variations may result in excessive
clearances in the stud and housing, even when new.
• This
excessive clearance results in less-precise handling, safety
concerns and shorter assembly life.
• Without a bearing preload provision, larger clearances and
increased axial movement can occur at lower mileages.
• Inside
the assembly, the MOOG Belleville spring washer design
maintains a consistent preload force between the patented
domed cover plate and the top of the bearing­.
• As
clearances inevitably increase with mileage, the Belleville
washer’s preload force of up to 100 ft/lbs. against the bearing
maintains proper stud ball/bearing alignment and clearances
for more consistent operation for the life of the part.
NON-MOOG
DESIGN
other suppliers may not use a preload.
varying Manufacturing tolerances may result
in excessive looseness, even in a new part.
Belleville preloads bearing to minimize
impacting as bearing surfaces wear.
Axial
Deflection
MOOG Premium belleville
washer design is found
on MOOG socket-style
components, including:
Ball joints and
tie-rod ends
EXCESSIVE CLEARANCE SHORTENS ASSEMBLY
LIFE AND RAISES SAFETY CONCERNS.
Axial Deflection is vertical
movement (up and down) of the
ball stud within the housing.
THE BELLEVILLE SPRING-STEEL WASHER
PRELOADS THE BEARING TO MAINTAIN
OPTIMUM BALL-TO-BEARING CLEARANCE
LONGER THAN TYPICAL ASSEMBLIES.
BELLEVILLE
WASHER CAN
EXERT UP TO
100 LBS.
OF FORCE
other suppliers may use an over-stressed belleville that shatters
after cyclic loading, resulting in excessive looseness.
For parts lookup, visit
www.FMe-cat.com
tech line:
1-800-325-8886
moogproblemsolver.com
©2015 Federal-Mogul Motorparts Corporation. NASCAR is a registered trademark of NASCAR, Inc. MOOG and The Problem Solver are trademarks owned by Federal-Mogul Corporation,
or one or more of its subsidiaries, in one or more countries. All other trademarks are the property of their respective owners. All rights reserved. Form# MG27017-R

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