Jet Equipment JT9-690139 Variable Speed Milling Machine

Product Description

The JET EQUIPMENT JT9-690139 is a variable speed vertical knee milling machine built for production and toolroom environments. It is constructed using the Meehanite casting process, which produces a dense, vibration-resistant machine base. The spindle head is precision bored and honed to maintain cutting accuracy. A three-stage power downfeed with automatic stop allows controlled drilling and boring cycles. This unit ships configured with a 3-axis ACU-RITE 200S digital readout, X and Y-axis powerfeeds, and a power draw bar, reducing manual tool-change effort. Licensed machinists and industrial maintenance techs are the primary installers and operators.

The JT9-690139 is suited for residential machine shops, manufacturing facilities, toolrooms, and vocational training centers requiring a full-featured knee mill. The ACU-RITE 200S DRO provides three-axis position readout for milling, drilling, and boring operations. X and Y-axis powerfeeds reduce operator fatigue during long surface cuts. The power draw bar speeds R8 toolholder changes. Available in single or three phase power configurations, this machine fits a range of shop electrical setups. An internal coolant tank is cast into the base for use with an optional coolant pump system.

Key Features

• Meehanite casting construction for a dense, vibration-dampening machine base and column
• Precision bored and honed milling head with high-precision Class 7 spindle bearings
• Three-stage power downfeed with automatic stop for controlled depth cycles
• 3-axis ACU-RITE 200S digital readout included for X, Y, and Z-axis position display
• X and Y-axis powerfeeds and power draw bar included as configured
• Precision hardened and ground ways and table with adjustable gibs throughout
• Internal coolant tank cast into base; compatible with optional coolant pump system
• One-shot lubrication system and way covers standard; tolerance test sheet included

Compatibility

Designed as an OEM-configured JTM-4VS series vertical knee milling machine. Tooling compatibility is based on the spindle taper specified for this series. Confirm spindle taper before ordering collets, end mill holders, or other toolholders.

Installation Notes

Installation should be performed by a qualified millwright or industrial machinery mechanic. Disconnect and lockout all electrical power before servicing the spindle, drive components, or electrical enclosure. The machine requires a level, rigid concrete or steel foundation adequate for a 2,420-pound load. Electrical connection must comply with applicable NEC requirements for the voltage and phase configuration selected; consult a licensed electrician for supply wiring.