JET JTM-1254RVS Variable Speed Vertical Mill with X Powerfeed & Air Power Drawbar is a precision-engineered 12" x 54" vertical milling machine from JET, built for demanding industrial and professional machining environments. Combining variable speed control across a wide RPM range, a pneumatic power drawbar, and an X-axis powerfeed, this heavy-duty mill delivers the accuracy, versatility, and efficiency required to consistently produce high-quality machined components. Backed by the industry-leading JET Two Year Warranty, the JTM-1254RVS is offered with an R-8 spindle taper and a 5HP, 230/460V, 3-phase motor engineered for serious production work.

Key Features

• Adjustable gibs throughout for precise fit and reduced play across all axes
• Dual locks on all moveable surfaces for enhanced rigidity and repeatability during machining operations
• Heavy-duty spindle brake for rapid and controlled stopping of the spindle
• Precision bored and honed milling head ensuring superior accuracy and surface finish
• Precision hardened and ground ways and table for long-term wear resistance and dimensional accuracy
• Three precision ground T-slots for secure and flexible workholding setups
• Three-stage power downfeed with automatic stop for consistent depth control and repeatable operations
• Quill down feed rates of .0015, .003, and .008 IPR to match a wide range of materials and cutting conditions
• Variable spindle speed range from 80 to 3,800 RPM for maximum operational flexibility
• X-axis powerfeed for smooth, hands-free table traversal during milling passes
• Pneumatic (air) power drawbar for fast and convenient tool changes
• Two 115V outlets on the electrical box dedicated for powerfeed accessories
• Ongoing automatic lubrication and quick nut spindle feed for ease of use and reduced maintenance downtime
• JET exclusive new casting design allows for easier machine leveling without raising the unit off the floor
• 5HP, 230/460V, 3-phase motor delivers the power needed for heavy-duty milling applications
• R-8 spindle taper with a collet capacity range of 1/8" to 1"
• Industry-leading JET Two Year Warranty for confidence and long-term value

Specifications

• MPN: JT9-698085
• Stock Number: 698085
• Country of Origin: Taiwan
• Motor: 5HP, 230/460V, 3Ph
• Spindle Taper: R-8
• Collet Capacity: 1/8 - 1
• Range of Spindle Speeds (RPM): 80 - 3,800
• Spindle Travel (In.): 5
• Quill Diameter (In.): 4-1/8
• Quill Down Feed Rates (IPR): .0015 / .003 / .008
• Max Distance Spindle to Table (In.): 23
• Distance Spindle to Column (Max.) (In.): 27-3/4
• Column Width (In.): 14-1/4
• Saddle Width (In.): 25-5/8
• Overall Dimensions (L x W x H) (In.): 92-1/8 x 79-7/8 x 104-1/4
• Powerfeed: X-Axis
• Power Draw Bar: Pneumatic
• Style (Type): Variable Speed
• Prop 65: Cancer and Reproductive Harm

Frequently Asked Questions

What spindle taper does the JET JTM-1254RVS use, and what is the collet capacity range?

The JTM-1254RVS uses an R-8 spindle taper with a collet capacity range of 1/8" to 1", making it compatible with a wide variety of standard R-8 tooling commonly found in professional machine shops.

What type of power drawbar is included, and how does it benefit tool changes?

This mill includes a pneumatic (air) power drawbar. A pneumatic drawbar significantly speeds up tool changes compared to a manual drawbar by using compressed air to engage and release tooling quickly, reducing downtime during production runs.

What are the available quill down feed rates, and does the mill have an automatic stop feature?

The JTM-1254RVS offers three-stage power downfeed with quill down feed rates of .0015, .003, and .008 IPR. It also includes an automatic stop feature, allowing operators to preset depth stops for consistent and repeatable machining results without constant manual monitoring.

What electrical power requirements does the JTM-1254RVS need, and are there dedicated outlets for the powerfeed?

The JTM-1254RVS requires a 230/460V, 3-phase electrical supply to power its 5HP motor. The electrical box on the mill includes two dedicated 115V outlets intended exclusively for powerfeed accessories, keeping the setup organized and electrically safe.