JET JTM-4VS Mill with ACU-RITE 203 DRO is a professional-grade vertical milling machine from JET, engineered for machinists and production shops demanding precision, durability, and versatile variable-speed performance. Built on a Certified Meehanite casting process, this mill delivers consistent and reliable operation across a wide range of milling applications, while the integrated ACU-RITE 203 Digital Readout system provides accurate, real-time positional feedback to streamline setup and improve part accuracy. With a variable spindle speed range of 60 - 4,200 RPM, a heavy-duty 3 HP motor, and a generous 9 x 49 inch table, the JTM-4VS is purpose-built for demanding cutting tasks that require both power and precision.

Key Features

• Adjustable gibs throughout for precise fit and reduced play across all axes
• Heavy duty splined motor drive delivers smooth, reliable power transmission at all speed ranges
• Internal coolant tank built into casting base for use with coolant system (coolant pump not included)
• Large diameter quill is chromed for enhanced wear resistance and smooth travel
• One shot lubrication system simplifies routine maintenance and extends machine life
• Precision hardened and ground ways and table ensure long-term accuracy and surface integrity
• Spindle head is internally cooled to maintain consistent operating temperatures during extended use
• Precision bored and honed milling head ensures quality, repeatable cuts
• Three-stage power downfeed with automatic stop for precise depth control and ease of operation
• Tolerance test sheet included for verified quality assurance right out of the crate
• Available in single or three phase power configurations to suit a variety of shop environments
• Backed by an industry-leading two-year full service and parts warranty

Specifications

• MPN: JT9-690202
• Stock Number: 690202
• Country of Origin: Taiwan
• Motor: 3 HP, 230/460V, 3Ph
• Style (Type): Variable Speed R8
• Range of Spindle Speeds (RPM): 60 - 4,200
• Spindle Taper: R-8
• Spindle Travel (In.): 5
• Quill Diameter (In.): 3-3/8
• Quill Down Feed Rates (IPR): .0015 - .003 - .006
• Collet Capacity: 1/8 - 7/8
• Table Size (L x W) (In.): 9 x 49
• Table Longitudinal Travel (In.): 34
• Table Longitudinal Travel With Powerfeed (In.): 28-3/4
• Table Cross Travel (In.): 12
• T-Slot Centers (In.): 2-1/2
• Travel of Knee (In.): 14-1/2
• Max Distance Spindle to Table (In.): 17-1/2
• Distance Spindle to Column (Max.) (In.): 19
• Number of Axis: 2
• Overall Dimensions (L x W x H) (In.): 66 x 63 x 85
• Prop 65: Cancer and Reproductive Harm

What's Included

• ACU-RITE 203 Digital Readout (DRO)
• Tolerance test sheet

Frequently Asked Questions

What spindle speed range does the JET JTM-4VS provide, and is it continuously variable?

The JTM-4VS offers a variable spindle speed range of 60 to 4,200 RPM, allowing the operator to dial in the optimal cutting speed for a wide variety of materials and tooling without the need to change belts or gears manually.

What quill diameter does this mill use, and is it hardened for longevity?

The JTM-4VS features a large diameter 3-3/8 inch quill that is chromed to provide superior wear resistance and consistent smooth travel throughout the life of the machine.

Does this mill include a coolant system?

The casting base includes an internal coolant tank built into the base for use with a coolant system; however, the coolant pump is not included and must be sourced separately.

What lubrication system does the JTM-4VS use, and what power options are available?

The JTM-4VS uses a one shot lubrication system that simplifies routine maintenance and helps extend machine life. It is available in both single and three phase power configurations, with the standard model running on 3 HP at 230/460V, 3-phase power.