JET JTM-1 Mill with 3-Axis Newall DP700 DRO (Knee) is a precision vertical knee mill engineered by JET for demanding machining operations that require accuracy, repeatability, and long-term reliability. Equipped with a 3-axis Newall DP700 digital readout on the knee, this mill delivers real-time positional feedback across all three axes, dramatically reducing setup time and improving part-to-part consistency. A three-stage power down feed with automatic stop, high-precision Class 7 spindle bearings, and Certified Meehanite castings combine to give operators a rugged, vibration-resistant platform capable of tackling a wide range of milling, drilling, and boring tasks. The JET Two Year Warranty backs every unit, providing confidence in both the machine and the brand.

Key Features

• Heavy duty splined motor drive for reliable, consistent power transmission under load
• Internal coolant tank built into base for use with coolant system (coolant pump not included)
• Large diameter quill is chromed for smooth travel and extended wear resistance
• One shot lubrication system simplifies maintenance and keeps critical surfaces properly lubricated
• Precision bored and honed milling head ensures accurate spindle alignment and minimal runout
• Precision hardened and ground ways provide stable, repeatable axis movement throughout the full range of travel
• Satin chrome finished dials offer clear, glare-reducing readability in shop environments
• Tolerance test sheet included, confirming that every machine meets JET's quality standards before leaving the factory
• Three-stage power down feed with automatic stop for consistent depth control
• Internally cooled spindle head prevents seizing during extended machining operations
• 16 spindle speeds ranging from 80-5,440 RPM accommodate a wide variety of materials and tooling
• 3-axis Newall DP700 DRO on the knee provides precise, real-time positional data
• Certified Meehanite castings deliver exceptional rigidity and vibration dampening
• R-8 spindle taper accepts a broad range of standard tooling and collets

Specifications

• MPN: JT9-691196
• Country of Origin: Taiwan
• Style (Type): Step Pulley R8
• Number of Axis: 3 (Knee)
• Motor: 2 HP, 230V, 3Ph
• Number of Spindle Speeds: 16
• Range of Spindle Speeds (RPM): 80-5,440
• 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 Longitudinal Travel (In.): 23-7/8
• Table Longitudinal Travel With Powerfeed (In.): 20-2/7
• Table Cross Travel (In.): 12-1/2
• T-Slot Centers (In.): 2-1/2
• Distance Spindle to Column (Max.) (In.): 19
• Max Distance Spindle to Table (In.): 17-1/2
• Overall Dimensions (L x W x H) (In.): 57 x 64 x 82
• Prop 65: Cancer and Reproductive Harm

Frequently Asked Questions

What type of spindle taper does the JTM-1 use, and what collet sizes are compatible?

The JTM-1 uses an R-8 spindle taper, which is one of the most widely used standards in manual knee mills. The collet capacity range is 1/8-7/8 inch, giving operators access to a broad selection of end mills, drill chucks, and other standard tooling.

How many spindle speeds are available, and what is the full RPM range?

The JTM-1 offers 16 spindle speeds with a range of 80-5,440 RPM. This wide range makes the machine well suited for working with a variety of materials - from slower speeds for large-diameter tools or tough alloys to higher speeds for smaller-diameter tooling and aluminum.

Is a coolant pump included with this mill?

The base of the JTM-1 features an internal coolant tank built in and ready for use with a coolant system; however, the coolant pump is not included and must be sourced separately.

What does the included tolerance test sheet indicate?

Every JTM-1 ships with a tolerance test sheet that documents the specific accuracy measurements of that individual machine as verified before leaving the factory. This provides assurance that the mill meets JET's precision engineering standards right out of the crate.