JET JTM-4VS Mill with ACU-RITE 203 DRO with X and Y-Axis Powerfeeds is a professional-grade vertical milling machine from JET, engineered for machinists and manufacturing professionals who demand precision, reliability, and production-ready performance. Built on the Certified Meehanite casting process, this variable speed mill combines a wide spindle speed range, integrated digital readout, and dual-axis powerfeeds to deliver consistent, accurate results across a broad range of milling operations. The precision bored and honed milling head, three-stage power downfeed with automatic stop, and one-shot lubrication system make this machine as efficient as it is capable - and it is backed by an industry-leading two-year full service and parts warranty.

Key Features

• Adjustable gibs throughout for precise fit and minimal backlash across all axes
• Heavy duty splined motor drive ensures robust, reliable power transmission during demanding cuts
• Internal coolant tank built into the casting base for use with a coolant system (coolant pump not included)
• Large diameter quill is chromed for durability, smooth travel, and extended service life
• One-shot lubrication system simplifies maintenance and protects critical moving components
• Precision hardened and ground ways and table provide a stable, accurate machining surface
• Spindle head is internally cooled to maintain consistent operating temperatures during extended use
• Tolerance test sheet included for verified out-of-box accuracy and quality assurance
• Certified Meehanite casting process delivers consistent structural integrity and vibration damping
• Three-stage power downfeed with automatic stop for repeatable, hands-free quill operation
• Variable spindle speed range of 60 - 4,200 RPM accommodates a wide variety of materials and tooling
• ACU-RITE 203 DRO with X and Y-Axis Powerfeeds for enhanced positioning accuracy and productivity
• R-8 spindle taper accepts a wide range of industry-standard toolholders and collets
• Available in single or three-phase power configurations to suit various shop environments

Specifications

• MPN: JT9-690098
• Stock Number: 690098
• Style (Type): Variable Speed R8
• Motor: 3 HP, 230/460V, 3Ph
• 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
• Distance Spindle to Column (Max.) (In.): 19
• Max Distance Spindle to Table (In.): 17-1/2
• Number of Axis: 2
• Powerfeed: X and Y-Axis
• Overall Dimensions (L x W x H) (In.): 66 x 63 x 85
• Country of Origin: Taiwan
• Prop 65: Cancer and Reproductive Harm

Frequently Asked Questions

What spindle speed range does the JET JTM-4VS offer, and is it suitable for both slow and high-speed milling?

The JTM-4VS provides a variable spindle speed range of 60 to 4,200 RPM, making it well-suited for a wide variety of materials and operations - from slow, heavy cuts in steel at the lower end of the range to high-speed finishing passes in aluminum or non-ferrous materials at the upper end.

Does this mill include a coolant pump?

The JTM-4VS features an internal coolant tank built directly into the casting base, designed for use with a coolant system. However, the coolant pump is not included and would need to be sourced separately.

What DRO and powerfeed configuration comes with this machine?

This mill comes equipped with the ACU-RITE 203 Digital Readout (DRO) along with powerfeeds on both the X and Y-Axis, enabling precise, repeatable positioning and reducing operator fatigue during production runs.

What warranty is provided with the JET JTM-4VS?

The JET JTM-4VS is backed by JET's industry-leading two-year full service and parts warranty, providing peace of mind for professional and production shop environments. A tolerance test sheet is also included to confirm out-of-box accuracy.