Jet 321390 Gap Bed Engine Lathe with Dro Collet Closer

Product Description

The JET 321390 is the GH-1660ZX gap bed engine lathe configured with the 300S digital readout (DRO) and collet closer. This is a heavy-duty manual turning machine designed for professional machine shops, tool rooms, and industrial production environments. The integrated DRO provides real-time axis position feedback, reducing setup time and improving repeatability on precision turning operations. The included collet closer expands workholding capability for bar stock and smaller-diameter parts. At 5,925 pounds, this is a full-size floor lathe intended for permanent or semi-permanent shop installation by qualified machinists or millwrights.

The GH-1660ZX configuration indicates a 16-inch swing over bed and 60-inch distance between centers, making it suited for medium-to-large diameter and medium-length workpieces. Typical applications include shaft turning, threading, boring, and facing operations on ferrous and non-ferrous materials. This machine is found in industrial maintenance facilities, job shops, vocational training centers, and precision manufacturing operations where a full-featured manual lathe with digital positioning is required.

Key Features

• 300S DRO system provides real-time axis position readout for repeatable setups
• Collet closer included for efficient workholding on bar stock and small-diameter parts
• Gap bed design allows machining of larger-diameter workpieces when gap section is removed
• Heavy cast iron construction at 5,925 pounds provides rigidity and vibration damping
• 16-inch swing and 60-inch between-centers capacity covers a wide range of turning work

Compatibility

The 321390 is the complete package assembly for the JET GH-1660ZX lathe platform with the 300S DRO and collet closer accessories factory-integrated. No additional compatible model or replacement part information was provided in the source data.

Installation Notes

Installation of a machine at this weight class requires a qualified millwright or mechanical contractor and appropriate lifting equipment such as a forklift or overhead crane rated for the load. The mounting surface must be a reinforced concrete floor capable of supporting the static and dynamic loads of a 5,925-pound machine. Electrical connection should be performed by a licensed electrician in accordance with applicable NEC requirements for the machine nameplate voltage and amperage. Level the machine on isolation pads or anchor bolts before operation and verify alignment of headstock and tailstock prior to first use.

Technical Specifications

• Weight: 5925 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 1

Standard Information

• Brand: JET
• Manufacturer Part Number: 321390