JET JTM-949EVS Mill with Acu-Rite 203 DRO with X, Y and Z-Axis Powerfeeds is a professional-grade 9" x 49" Electronic Variable Speed milling machine from JET, engineered for machinists and metalworking professionals who demand consistent, reliable performance across heavy cutting applications. Built using the Certified Meehanite casting process, this mill combines a rigidly redesigned column and base with an extensive suite of precision features - including Class 7 spindle bearings, Turcite-B coated axes, and a fully integrated Acu-Rite 203 DRO - to deliver maximum accuracy, durability, and operator convenience in demanding shop environments.

Key Features

• Automatic oiler releases 3 to 6 cc/cy of lubrication every 30 minutes, ensuring continuous protection of critical moving components
• Class 7 spindle bearings support the spindle for maximum rigidity in heavy cutting applications
• Dual locks on all moveable surfaces provide enhanced stability and precision during operation
• Spindle head is internally cooled extending bearing, belt and motor life
• Swing away control box houses an e-stop and puts all controls at the operator's fingertips for safe, convenient operation
• Swing away safety shield for added operator protection
• Table and ways are hardened up to 54 HRC and precision ground for greater accuracy
• The electrical box has been relocated to the back of the mill and houses two 115 outlets for powered accessories
• The innovative design of the machine base provides an easier solution to level the machine without raising it up off the floor
• The X-Axis and Y-Axis are coated with Turcite-B for reduced vibration and smooth movements
• Constructed using the Certified Meehanite casting process for consistent and reliable operation
• Newly designed column and base incorporates a rigid, robust construction
• Backed by the industry-leading JET Two Year Warranty; CSA/CUS Certified
• Integrated Acu-Rite 203 DRO with X, Y, and Z-Axis Powerfeeds for precision digital readout and automated table movement
• Delta B-Series inverter for smooth, responsive electronic variable speed control from 60 to 4,500 RPM

Specifications

• MPN: JT9-690524
• Country of Origin: Taiwan
• Stock Number: 690524
• Style (Type): EVS
• Table Size (L x W): 9 x 49 in.
• Table Longitudinal Travel: 36 in.
• Table Longitudinal Travel With Powerfeed: 30-3/4 in.
• Table Cross Travel: 12-5/8 in.
• T-Slot Centers: 2-1/2 in.
• Saddle Width: 11-1/2 in.
• Spindle Taper: R-8
• Spindle Travel: 5 in.
• Quill Diameter: 3-3/8 in.
• Quill Down Feed Rates (IPR): .0015 - .003 - .006
• Range of Spindle Speeds (RPM): 60 - 4,500
• Collet Capacity: 1/8 - 7/8
• Motor: 3HP, 230V, 3Ph
• Inverter Type: Delta, B
• Powerfeed: X, Y and Z-Axis
• Number of Axis: 2
• Column Width: 18 in.
• Distance Spindle to Column (Max.): 18-1/8 in.
• Max Distance Spindle to Table: 20-3/4 in.
• Travel of Knee: 15-3 in.
• Overall Dimensions (L x W x H): 67 x 64 x 86 in.
• Prop 65: Cancer and Reproductive Harm

Frequently Asked Questions

What spindle speed range does the JTM-949EVS offer, and how is that range achieved?

The JTM-949EVS provides a spindle speed range of 60 to 4,500 RPM. This wide range is achieved through the machine's Electronic Variable Speed system, which uses a Delta B-Series inverter to deliver smooth, stepless speed control suited to a broad variety of milling operations and materials.

What type of spindle bearings does this mill use, and why does it matter?

This mill is equipped with Class 7 spindle bearings, which support the spindle for maximum rigidity in heavy cutting applications. Higher-class bearings reduce runout and flex during demanding cuts, contributing directly to dimensional accuracy and surface finish quality.

How does the automatic oiler work on the JTM-949EVS?

The automatic oiler releases 3 to 6 cc/cy of lubrication every 30 minutes, continuously supplying critical surfaces without requiring manual intervention. This consistent lubrication helps maintain smooth operation and extends the service life of the machine's moving components.

What measures are taken to reduce vibration and improve axis movement smoothness?

The X-Axis and Y-Axis are coated with Turcite-B for reduced vibration and smooth movements. Additionally, the table and ways are hardened up to 54 HRC and precision ground for greater accuracy, while dual locks on all moveable surfaces provide added stability during cutting operations.