SOLUTIONS FOR THE
SOLUTIONS FOR THE
SOLUTIONS FOR THE
AUTOMOTIVE INDUSTRY
AUTOMOTIVE INDUSTRY
AUTOMOTIVE INDUSTRY
VOLUME 2 " ISSUE 1
aximizing bearing performance and life remains an objective throughout The Timken Company, from
M design teams and manufacturing associates to our field sales team and distributors. TechTips helps you
install and maintain Timken® bearings, seals and components to maximize the life and performance of your
bearings and the systems in which they operate. For more information regarding Timken automotive products
and services, visit www.timken.com or contact your local Timken distributor.
PROPER TAPERED BEARING SETTINGS
The amount of end play or preload existing in a
mounted pair of bearings is critical to performance.
If incorrectly set, bearings may prematurely
damage, and seals, brake components and tire
operation may also be affected.
In addition, improper bearing setting can
negatively impact factory settings of camber and
toe. The Timken Company recommends installing
all bearings to proper setting specifications to
avoid issues.
Figure 1: Passenger car non-driven wheel setting method
SETTING FOR PASSENGER CAR
To adjust the setting of this bearing:
NON-DRIVEN WHEEL
Step 1: Tighten the nut while turning the hub.
Several mounting methods for tapered single roller
When there is a slight bind on the bearing,
bearings exist, some are more common than others.
the parts are seated correctly.
One of the most popular methods is mounting and
Step 2: Back the nut off 1/6 to 1/4 of a turn or
adjusting bearing setting with a bottle-cap
sufficiently to allow .001 to .007 end play.
stamping, hexagonal nut, cotter pin and threaded
Note: Failure to back off adjusting nut could cause
shaft (see Figure 1).
bearing to run hot and be damaged. Wheel could
lock or separate.
This approach is typically used on passenger car
front wheels in conjunction with a hardened
Step 3: Place the bottle-cap-type stamping over
tongue washer between the outboard bearing s
the nut and insert the cotter pin to prevent
inner ring and the adjusting nut.
the nut from backing off.
SETTING FOR INDEPENDENT
SUSPENSION REAR AXLES
Hardened surface nuts, tongue washers and outer-
jam nuts or lock nuts are commonly used for wheels
with full floating rear axles and some front-wheel
applications (see Figure 2).
To adjust the setting of this bearing:
Step 1: Tighten the nut while turning the hub.
When there is a slight bind on the bearing,
the parts are seated correctly.
Step 2: Back the nut off 1/6 to 1/4 of a turn or
Figure 2: Independent suspension rear axle setting method
sufficiently to allow .001 to .007 end play.
Note: Failure to back off adjusting nut could cause
bearing to run hot and be damaged. Wheel could
wheel components. Contact your Timken sales
lock or separate.
representative or distributor with additional bearing
Step 3: Tighten the jam nut to remove the thread setting questions.
clearance and to prevent the nut from
Additional information regarding Timken bearings,
backing off.
seals and hub assemblies can be found at
Proper bearing setting practices ensure maximum www.timken.com or by calling 1-800-223-1954 and
performance and life for bearings and all related asking for Aftermarket.
WARNING: Proper maintenance and handling practices are critical. Failure to follow installation instructions
and maintain proper lubrication can result in equipment failure, creating a risk of serious bodily harm.
Never spin a bearing with compressed air. The rollers may be forcefully expelled, creating a risk of serious
bodily harm.
Timken® is the registered trademark of
The Timken Company
www.timken.com
© 2004 The Timken Company
Printed in the U.S.A.
67M-01-04-7 Order No. 7561
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