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TRAK Machine Tools
Southwestern Industries, Inc.
TRAK TMC Mills with ProtoTRAK RMX CNC Safety, Installation, Maintenance, Service & Parts List
The oil circulation system works all the time the mill is powered up. The spindle could be used at any
time, so the extra lubrication is always available. Circulation oil flows through the spindle out to a heat
exchanger that contains a reserve tank, radiator and a pump to keep the fluid in circulation. Pressurized
hoses provide the transfer of fluid from the heat exchanger to the spindle as well as the return trip. Dual
cooling fans cool fluid in the radiator and also cool the pump motor. A gauge on the heat exchange
monitors coolant level. It is easy to view the coolant level from the rear of the TMC. See figures 8.1b and
8.4
Spindle manufacturer recommends using a stepped approach when using higher spindle speeds, i.e., to
reach 12K operation, start at 3K, 6K, 9K, and then to 12K. There is no need for routine maintenance
other than checking fluid level. Sheet metal covers are easy to remove in case the exchanger develops a
leak or needs other servicing.
Figure 8.1b
–
Heat Exchanger Without Covers
8.2
Added Spindle Oil Circulation With 12K Option
Figure 8.2 shows the spindle cartridge a couple of layers below the normal installed view. The spindle
sheet metal covers have been removed and the inset photo shows the spindle cartridge outside of the
casting. To the right of the photo, you see the high-pressure circulation oil lines supplying the fluid to the
spindle as well as the return pressure line. To the left of the photo the inset detail shows the spindle
cartridge out of the casting and allows clear view of the areas in the spindle that get the additional
cooling from the 12K option.
