The JET JTM-4VS milling machine combines industrial-grade construction, precision-machined components, and versatile spindle control to meet the demands of professional machine shops. Designed for toolrooms, fabrication facilities, maintenance departments, and production machining applications, this vertical knee mill delivers dependable performance for a wide range of metalworking operations.

Featuring a spacious 9″ x 49″ precision worktable and variable spindle speeds from 60 to 4,200 RPM, the JTM-4VS allows operators to adjust cutting speeds to accommodate different materials, cutting tools, and machining requirements. Its R-8 spindle taper accepts commonly used milling collets, end mill holders, and other machining accessories.

The JET JTM-4VS milling machine is available in two electrical configurations. The standard JTM-4VS features a 3 HP, 230/460V three-phase motor, while the JTM-4VS-1 offers a 2 HP, 115/230V single-phase motor. These options allow shops to select the machine best suited to their available electrical service.

Built with heavy-duty Meehanite castings, precision-ground components, and a robust milling head, the JTM-4VS series is designed to provide stability, rigidity, and consistent performance in demanding machining environments.

Key Features and Benefits

• 9″ x 49″ Precision Worktable: Provides ample space for workholding equipment, fixtures, and larger machining projects.
• Variable Spindle Speeds (60–4,200 RPM): Allows operators to select appropriate cutting speeds for different materials and tooling.
• R-8 Spindle Taper: Accommodates a wide range of commonly available milling collets, cutters, and toolholders.
• 5″ Spindle Travel: Provides vertical working range for drilling, boring, and milling applications.
• 34″ Longitudinal Table Travel: Accommodates longer workpieces and reduces repositioning during machining operations.
• 12″ Cross Table Travel: Offers flexibility when positioning workpieces and cutting tools.
• 14-1/2″ Knee Travel: Allows adjustment for different workpiece heights and tooling arrangements.
• Meehanite Cast-Iron Construction: Provides rigidity and helps minimize vibration during machining.
• Three Quill Downfeed Rates: Offers 0.0015, 0.003, and 0.006 inches per revolution for controlled spindle feeding.
• 660 lb Worktable Capacity: Supports substantial workpieces and workholding equipment.
• Adjustable Milling Head: Tilts 90° left or right and 45° forward or backward for angled machining operations.
• Single-Phase and Three-Phase Models: Available with different motor configurations to suit shop electrical requirements.

Available Machine Configurations

The JET JTM-4VS milling machine is offered with several available accessories and configurations, including digital readout systems (DROs), power feeds, and air-powered drawbar systems.

Accessories are configuration-dependent. JET does not offer every accessory combination as a factory-configured machine. Please contact us with your preferred accessories so we can verify availability and pricing.

Additional Milling Machine Accessories

We carry a wide selection of milling machine accessories, including collet sets, machine vises, clamping kits, drill chucks, and coolant systems.

Digital readout systems, power feeds, and power drawbar systems may also be available separately for installation, depending on compatibility and availability.

Contact us for JET JTM-4VS milling machine availability, configurations, accessories, and pricing.