JET JTM-1254RVS Variable Speed Vertical Mill with ACU-RITE 203 3X (K) DRO, XY & Z Powerfeeds, and Air Power Drawbar is a professional-grade 12" x 54" vertical milling machine engineered by JET for machinists and shops demanding precision, durability, and versatile performance. Combining a variable spindle speed range of 80 - 3,800 RPM with a 5HP motor, an integrated ACU-RITE 203 digital readout, three-axis powerfeeds, and a pneumatic power drawbar, this heavy-duty mill delivers the accuracy and efficiency required for producing high-quality machined components. Backed by the industry-leading JET Two Year Warranty, it represents a complete, production-ready milling solution.

Key Features

• Adjustable gibs throughout for precise fit and long-term accuracy
• Dual locks on all moveable surfaces for rigid workholding and setup repeatability
• Precision bored and honed milling head ensures accurate spindle alignment
• Precision hardened and ground ways and table for smooth, consistent movement and extended wear life
• Spindle brake for rapid stopping of the spindle, improving safety and efficiency
• Three precision ground T-slots on the table for secure and flexible workpiece clamping
• Three-stage power downfeed with automatic stop for controlled, repeatable depth drilling and boring operations
• Two 115V outlets on electrical box dedicated for Powerfeeds only, providing convenient integrated power
• Ongoing automatic lubrication system for consistent machine performance and reduced maintenance demands
• Quick nut spindle feed for fast and efficient tool changes
• Exclusive JET new casting design allows machine leveling without raising the unit off the floor
• Available in R-8 spindle taper on this configuration
• ACU-RITE 203 3X (K) DRO with XY and Z axis digital readout for precise positional feedback
• Pneumatic (air) power drawbar for fast, consistent tool clamping and release
• XY and Z powerfeeds for automated table and knee movement

Specifications

• MPN: JT9-698119
• Stock Number: 698119
• Country of Origin: Taiwan
• Motor: 5HP, 230/460V, 3Ph
• Range of Spindle Speeds (RPM): 80 - 3,800
• Spindle Taper: R-8
• Spindle Travel (In.): 5
• Quill Diameter (In.): 4-1/8
• Quill Down Feed Rates (IPR): .0015 / .003 / .008
• Collet Capacity: 1/8 - 1
• Number of Axis: 3 (Knee)
• Column Width (In.): 14-1/4
• Distance Spindle to Column (Max.) (In.): 27-3/4
• Max Distance Spindle to Table (In.): 23
• Saddle Width (In.): 25-5/8
• Power Draw Bar: Pneumatic
• Overall Dimensions (L x W x H) (In.): 92-1/8 x 79-7/8 x 104-1/4
• Style (Type): Variable Speed
• Prop 65: Cancer and Reproductive Harm

Frequently Asked Questions

What spindle taper does the JET JTM-1254RVS use?

This mill uses an R-8 spindle taper, which is one of the most common and widely supported tapers in vertical milling, accommodating a collet capacity range of 1/8 to 1 inch.

What is the spindle speed range on this variable speed mill?

The JTM-1254RVS offers a variable spindle speed range of 80 to 3,800 RPM, providing broad versatility for milling, drilling, and boring a wide variety of materials and operations.

What power is required to run the XY and Z Powerfeeds?

The electrical box includes two dedicated 115V outlets specifically for the Powerfeeds, providing convenient integrated power without requiring separate external outlets for those components.

Does this mill include a digital readout (DRO)?

Yes. This package includes the ACU-RITE 203 3X (K) DRO, which provides digital positional readout on the X, Y, and Z axes, allowing machinists to achieve precise and repeatable positioning during milling operations.