21
10.2 Periodic maintenance requirements
During operation, periodically vacuum and brush chips
and debris from machine.
Operate knee and table lead screws through full range
of movement to evenly distribute lubricant.
Apply light machine oil to work table and other exposed
metal surfaces to prevent rust or corrosion.
Remove vent panels to check pulleys and belts for
unusual wear or grooving. NOTE: Operators should vary
speed occasionally to prevent formation of grooves on
pulley surfaces.
11.0 Recommended speed for mill and drill operations
Mill cutting speed recommended (mm/min)
V=
πDN/1000
cutting speed (mm
min)
Material Heavy cutting Processing cutting
Cast iron 30-40 45-90
Malleable iron 37-45 45-90
Steel (soft) 60-90 75-105
Steel (medium) 454-67 52-75
Steel (hard) 24-37 55-75
Cast steel 24-30 55-75
Aluminum 240-300 300-360
Brass 105-180 150-300
Bronze 52-75 75-90
Magnesium alloy 240-300 300-600
Zinc alloy 120-240 210-450
Drill speed (RPM) recommended
5mm hole 1000-1500
10mm hole 500-800
13mm 300-500
20mm 150-300
Table 5
12.0 Replacement parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800-
274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial Number of
your machine available when you call will allow us to serve you quickly and accurately.
Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET.
Some parts are shown for reference only, and may not be available individually.
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