Jet JTM-1, Operating Instructions And Parts Manual

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13.0 Maintenance
Before any intervention on machine, disconnect it from electrical supply by pulling out plug
or switching off main switch! Failure to comply may cause serious injury.
13.1 Lubrication
The milling machine is equipped with a “one-shot” lubrication system. The system lubricates the lead screws and
ways. Oil cups provide lubrication for spindle bearings and back gear mechanism. Refer to Table 3 and Figures
15/16 for lubrication requirements and access points.
Key Description Action Recommended Lubricant
A Spindle bearings (oil cup) Fill daily.
Mobil DTE Oil Light,
or equivalent 10W machine oil
B Gear case (oil cup) Fill daily.
Mobilith AW1,
or equivalent NLGI-1 grease
C
Knee and table slide ways,
leadscrew (one-shot lube
system) Check oil daily – add if required.
Pull lube handle every hour during
operations. Mobil Vactra Oil #2,
or equivalent lubricant designed
for slideways
D
Knee elevating screw
(grease fitting)
Service weekly with lube gun.
Mobilith AW2,
or equivalent NLGI-2 grease
Table surface, and other
exposed metal surfaces. Wipe down after use. Light coat of
oil for rust protection.
Mobil DTE Oil Light, or equivalent
E Speed range selector Oil cam ring slot weekly. Mobil DTE Oil Light, or equivalent
Table 3: Lubrication Points
Figure 15
Figure 16
13.2 Periodic Maintenance Activities
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
(particularly when applied using the “one-shot”
system).
Apply light machine oil to work table and other
exposed metal surfaces to prevent rust or
corrosion.
Remove belt guards to check pulleys and belts for
unusual wear or grooving.
NOTE: Operators
should vary speed occasionally to prevent
formation of grooves on pulley surfaces.