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TOTAL LIFE SCALE
Management & Merchandising
The following example demonstrates the possible use of Total Life Scales when
comparing the above Sealed Track and Segment wear life and maintenance history with
3 alternative projected Sealed and Lubricated Track wear life and maintenance expecta-
tions in identical conditions:
Sealed Track History
Cost/Hour = $ ____________ = ___________
3980 smu
(Pin and bushing turn and segment replace at 2000 SMU and run to destruction at 3980
SMU)
Sealed and Lubricated Track
Cost/Hour = $ ____________ = ___________
Projected Alternative No. 1
6000 smu
(Wet bushing turn at 3000 SMU and run to link destruction at 6000 SMU with no
additional segments required)
Sealed and Lubricated Track
Cost/Hour = $ ____________ = ___________
Projected Alternative No. 2
3600 smu
(No turn — run to bushing destruction at 3600 SMU with no additional segment
required)
Sealed and Lubricated Track
Projected Alternative No. 3
(Dry bushing turn at 3000 SMU and run to pin and bushing destruction at 5000 SMU
with no additional segments required)