Description
Mill precision mounting slots, bore spindle bearing pockets, and drill heavy cutter deck hubs with geared-head accuracy. The JET Geared Head Square Column mill drill delivers industrial metal cutting precision with an integrated DP700 2-axis digital readout. This heavy milling machine features power quill downfeed. It requires 230V single-phase electrical power and solid foundation bolting.
Solid cast-iron forms the square column upright and base, stopping head twist and chatter during heavy face-milling cuts. A 1.5 HP electric motor drives a six-speed geared spindle head through hardened steel gears, providing matched torque across 65 RPM to 1550 RPM. The internal power downfeed mechanism advances the quill at three automated feed rates. The Newall DP700 2-axis digital readout tracks X and Y axis table travel within 0.0002 inches.
Key Features of JET JT9-351152
Machinists use this geared-head mill drill to bore commercial spindle housings and mill replacement tractor keyways. The digital readout eliminates manual handwheel counting errors.
- 1.5 HP electric motor powers a six-speed geared head spindle across 65 RPM to 1550 RPM
- Newall DP700 2-axis digital readout displays precise X and Y axis table coordinates
- Square column design prevents head rotation during elevation adjustments to hold location
- Three-speed automated power downfeed advances the quill under controlled drilling thrust
- R8 spindle taper accepts standard industrial collets, end mill holders, and boring heads
- Precision ground cast-iron worktable features three 5/8-inch T-slots for rigid vise mounting
- Integrated coolant delivery system flushes metal chips away from cutting tool edges
Geared Head Milling Dyno Telemetry
Spindle load tests verify continuous slotting of 1018 steel using a 3/4-inch end mill at 420 RPM with zero gear chatter. Spindle radial runout measures under 0.0004 inches at the spindle taper face. Downfeed thrust reaches 850 lbs under automated power downfeed in alloy steel. Motor current draw measures 7.2 amps on 230V single-phase power under full cut depth. Acoustic sound output measures 74 dBA.
Machining Bay Setup Safety Boundaries
Bolt the machine base tabs securely to a concrete floor foundation before starting heavy milling passes. Lock table axis clamps on idle axes before engaging heavy cuts to eliminate table deflection. Never touch the rotating spindle or attempt to clear chips with bare hands; use a chip brush.
- Geared spindle head requires ISO 68 industrial gear oil changes every 1000 hours
- Quill feed rack and square column ways demand daily lubrication with ISO 68 way oil
- Digital readout scale reader heads require periodic clean wipes to remove coolant mist
JET Mill Drill Warranty Manifest
JET covers this geared-head mill drill with a 2-Year commercial warranty covering mechanical gearing and electronic readouts. The package includes the mill drill, DP700 DRO, power downfeed, chuck, arbor, and manual.
