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Track Link Height
View Track Links Wear Chart >
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 To measure
the wear use a depth gauge and measure the depth from the
bottom of the grouser to link running surface. Other types
of wear are exposed in the following paragraphs.
Excessive side rail wear
Besides the operational condition, hilly areas, steep
ground or frequent sudden turns, this wear could be caused
by misalignment or excessive chain snakiness. Check
alignment of idlers, rollers and sprockets and also adjust
chain tension.
Indentations on internal surface of rail
This is caused by the sprocket teeth rubbing on the
inside of the link because of sloping ground, mis-aligned
sprocket and chain or a severely bent track chain. Adjust
chain and check alignment.
Pin boss side wear
Caused by contact with the outside flange of the
rollers. Should it occur before 100 percent of the link wear
then the rollers are beyond their useful life and should be
rebuilt.
Excessive face wear
This wear is caused by snakining of the joints because
of the abrasiveness of the ground. The use of chain guards
or fitting of lubricated chains can reduce this wear.
Pin boss wear by guards
This results from excessive snakiness of the chain due
to sprocket and roller misalignment or uneven roller wear.
Check sprocket alignment and rotate some rollers. |
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Rail
corners gouged
Caused by severe shock loads usually transmitted by the
rollers to the links. Besides operating conditions (heavy
work, speed, weight and power of machine) the situation can
be aggravated by the size of the shoes and/or track tension.
If this phenomenon affects less than 30 percent of the
rail's surface, it can be considered to have aesthetic value
only and of no consequence to the life of the undercarriage.
A remedy could be to reduce the shoe size and/or adjust the
chain tension.
Cracks or breakages of the most stressed areas
Most breakages are caused by tortional stress
transmitted to the link structure when the machine is used
in a severe application. In order to reduce this failure,
narrower shoes can be used and the chain tension regularly
adjusted.
Bushing counterbore and pin boss deformation
If this is not due to incorrect tooling being used when
assembling or disassembling the chain, then it is caused by
bending stresses in the pins and bushes. Also here, this
problem can be reduced by fitting smaller shoes and by
having the correct chain tension.
Note: lubricated chains reduce this problem |
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