Parker Kittiwake LinerSCAN, Instruction Manual

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MA-K17510-KW LinerSCAN manual ISSUE P.doc Page 58 of 93
6.2 Normal Wear over lifetime
The clearest indication of the onset of failure is a rapid rise in the wear rate. Although no two pieces of
equipment are the same, generally, most metallic components in a system will have high wear when
initially installed – due to bedding in processes, low wear in normal operation – adequate lubrication
and high wear again as the component eventually fails. This is often called a classic ‘bath-tub’ curve.
With this knowledge specific warning limits for each piece of equipment can set. If a rapid increase in
wear is spotted early enough, proactive and preventative maintenance can be conducted before
critical breakdown.
Figure 1 The “bath tub curve” or normal wear profile found in lubricated systems
Wear
rate
Time
Bedding-in Normal Wear
Failure
User
determined
Wear Warning
level