NOTE:
M8x1.25 metric threaded lifting holes have been incorporated into
the cup O.D. to aid in lifting. Threaded eyebolts or swivel hoists used
for lifting must not have a threaded length beyond 12mm for 12” and
14” bore and 10mm for 10” bore. The use of longer thread length will
result in internal bearing damage.
NOTE:
Use of the lifting holes will require the provided lifting hole plugs
to be removed and re-installed in the cup O.D. It is suggested that
when the button head cap screw is re-installed, it is torqued to 160
in-lbs for lubricated threads or 200 in-lbs for dry threads.
NOTE:
It is suggested that an adequate length of strap is used in
conjunction with the lifting holes to ensure no contact is present
between the strap and the seal. Refer to Fig. 1 on page 4.
Please note that any and all lifting fixtures should be designed to ensure
no damage is done to the assembly or its components. Particular care
must be taken around the entire seal to ensure that no contact or
interaction is present between the lifting fixtures incorporated into the
procedure and the seal. Upon lifting of the bearing assembly, no impact
loading shall be applied to the assembly components during handling,
transportation or installation as this may cause bearing performance
issues during application operation. At no time shall the bore clip or the
seals be removed from the assembly as damage to these components
will result.
C. Sheaves with Bearing Assemblies Installed
When lifting, transporting and/or storing sheaves with bearing
assemblies installed, the method of doing so must be done by means
of the sheave to ensure neither the bearing assembly nor the snap
rings carry the combined weight of the sheave and bearing assembly.
Please note that the overall width of the bearing assembly is greater
than that of the typical sheave, therefore anytime the sheave is to be
set down, a support between the sheave and the resting surface must
be used in order to eliminate any potential for damage to the cone
back-face and seal.
D. Crown / Traveling Block Assemblies with Assemblies
Installed
When transporting travelling blocks for any reason, it is suggested that
the block remain in an orientation that allows the bearing assembly
axis of rotation to remain in the horizontal plane to minimize water
from pooling at the seal location. If the block must be laid upon its
side, it is suggested that the bearings be covered/protected from this
potential pool of water in an effort to minimize contamination ingress.
SHELF LIFE AND STORAGE OF GREASE-
LUBRICATED BEARINGS AND COMPONENTS
To help you get the most value from our products, Timken provides
guidelines for the shelf life of grease-lubricated ball and roller
bearings, components and assemblies. Shelf life information is based
on Timken and industry test data and experience.
Shelf Life Policy
Shelf life should be distinguished from lubricated bearing/component
design life as follows:
Shelf life of the grease-lubricated bearing/component represents the
period of time prior to use or installation.
The shelf life is a portion of the anticipated aggregate design life.
It is impossible to accurately predict design life due to variations in
lubricant bleed rates, oil migration, operating conditions, installation
conditions, temperature, humidity and extended storage.
Shelf life values, available from Timken, represent a maximum limit
and assume adherence to the storage and handling guidelines
suggested in this catalog or by a Timken associate. Deviations from
the Timken storage and handling guidelines may reduce shelf life. Any
specification or operating practice that defines a shorter shelf life
should be used.
Timken cannot anticipate the performance of the grease lubricant
after the bearing or component is installed or placed in service.
TIMKEN IS NOT RESPONSIBLE FOR THE
SHELF LIFE OF ANY BEARING/COMPONENT
LUBRICATED BY ANOTHER PARTY.
Storage
Timken suggests the following storage guidelines for our finished
products (bearings, components and assemblies, referred to as “products”):
• Unless directed otherwise by Timken, products should be
kept in their original packaging until they are ready to be
placed into service.
• Do not remove or alter any labels or stencil markings on
the packaging.
• Products should be stored in such a way that the packaging is
not pierced, crushed or otherwise damaged.
• After a product is removed from its packaging, it should be
placed into service as soon as possible.
• When removing a product that is not individually packaged
from a bulk pack container, the container should be resealed
immediately after the product is removed.
• Do not use product that has exceeded its shelf life. Contact
your local Timken sales engineer for further information
on shelf life limits.
• The storage area temperature should be maintained between
0º C (32º F) and 40º C (104º F); temperature fluctuations should
be minimized.
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