JET JTM-949EVS Vertical Milling Machine

Description

Eliminate manual belt changes with the JET JTM-949EVS Vertical Milling Machine. This 3HP electronic variable speed mill provides electronic speed adjustments from 60 to 4,500 RPM. The 9in by 49in table accommodates common shop vises, though running continuous heavy face milling cuts in stainless steel requires supplemental flood coolant to prevent thermal expansion of the workpiece.

Certified Meehanite cast iron forms the rigid base, column, and knee to absorb cutting harmonics. Driven by a 3HP inverter-duty motor pulling 8.5 FLA on 230V three-phase power, the precision R8 spindle turns smoothly. Machine floor stance spans 66in length by 63in width by 85in height, bringing total dry equipment weight to 2,420 lbs.

Key Features of JET JT9-690542

Job shop machinists buy this electronic variable speed mill to reduce setup pricing on short-run parts. The digital RPM display and turn-dial speed changes let operators adjust speeds while the tool cuts.

• Electronic variable speed inverter drive modulates spindle speeds from 60 to 4,500 RPM.
• Digital spindle speed tachometer displays real-time RPM on the forward operator pendant.
• Precision R8 spindle turns on matched class 7 angular contact bearings for true concentricity.
• Ground 9in by 49in Meehanite table features three precision-machined 5/8in T-slots.
• Induction-hardened and ground slideways rated at 55 HRC resist abrasive metal chip wear.
• Centralized one-shot lubrication system oils all slideways and drive screws with one pull.
• Turret ram rotates 360 degrees and head tilts 45 degrees front to back for angled milling.
• Mechanical spindle brake halts tool rotation within three seconds of switch shutoff.

Spindle Concentricity Table Deflection Data

Bench testing demonstrates spindle runout sits at 0.0002in TIR inside the R8 collet taper. Under 800 lbs downward quill thrust, table deflection measures less than 0.0005in across 24in travel. Operational sound registers 68 dB at 2,000 RPM under light cuts. Spindle bearing temperature stabilizes at 118°F after four continuous shop hours. Motor current draw holds steady at 7.9 FLA under full chip load.

Mill Operation Slideway Service Rules

Table handwheels turn with 2 lbs rim force for manual positioning. The electronic variable speed dial modulates spindle RPM with light hand twist. Do not run heavy face mills exceeding 3in diameter without checking spindle drive gear mesh.

• Pull the one-shot lubrication handle to oil table slideways every 4 operating hours.
• Check saddle and knee gib adjustment screws to remove backlash every 100 hours.
• Wipe down ground table surfaces and spray with rust preventative oil every shift.

JET EVS Vertical Mill Warranty

JET covers the JTM-949EVS vertical mill with a 2-Year limited warranty against manufacturing defects. The machinery freight crate contains the milling machine, electronic variable speed head, way covers, one-shot oiler, drawbar, and instruction manual.