16" x 40" Large Spindle Bore Gear Head Lathe(GH-1640ZX)
The JET GH-1640ZX is engineered for shops that require increased horsepower, larger through-spindle capacity, and greater rigidity without moving to a longer bed machine. With a powerful 10HP, 3-phase motor and a 3.15" spindle bore, this 16" x 40" gear head lathe is built to handle heavier stock, tougher materials, and higher material removal rates.
The D1-8 spindle nose supports industrial-grade workholding solutions, while 12 spindle speeds ranging from 26–1500 RPM provide the torque and flexibility required for aggressive turning, precision threading, deep boring, and production-facing operations.
Safety and uptime are standard — not optional. The GH-1640ZX includes an electronic chuck key holder, foot brake, chuck guard, full-length splash guard, lead screw cover, and is UL 987 Certified for electrical compliance.
Every unit undergoes JET’s documented 30-Point Inspection before shipment to verify accuracy, gear engagement, safety systems, and operational readiness.
Backed by JET’s industry-leading 2-year parts and labor warranty, the GH-1640ZX is ideal for fabrication shops, energy-sector suppliers, industrial maintenance teams, and precision machining operations upgrading legacy equipment.

| Stock Number | JT1-2712 |
|---|---|
| Carriage Travel (In.) | 35 |
| Compound Slide Travel (In.) | 5.9 |
| Cross Slide Travel (In.) | 9.8 |
| Diametral Pitch Threads Number | 21 |
| Distance Between Centers (In.) | 40" |
| Drive | Geared Head |
| Length of Gap (In.) | 8 |
| Max Tool Size (In.) | 5/8 x 5/8 |
| Model Number | GH-1640ZX |
| Modular Pitch Threads Number | 18 |
| Modular Pitch Threads Range | 0.3 - 3.5 |
| Motor Phase | 3 |
| Motor Power (HP) | 10 |
| Motor Voltage (V.) | 230 |
| Number of Inch Threads | 45 |
| Number of Metric Threads | 39 |
| Number of Spindle Speeds | 12 |
| Prop 65 | Cancer and Reproductive Harm |
| Range of Cross Feeds (IPR) | 0.00075" - 0.02" |
| Range of Inch Threads (TPI) | 2-72 |
| Range of Longitudinal Feeds (IPR) | 0.0015" - 0.04" |
| Range of Metric Threads | 0.2 - 14mm |
| Range of Spindle Speeds (RPM) | 26-1500 RPM |
| Size | 16" x 40" |
| Spindle Bore (In.) | 3-1/8 |
| Spindle Mount | D1-8 |
| Spindle Taper | MT-7 (with sleeve MT-5) |
| Spindle Taper with Sleeve | MT-5 |
| Style (Type) | Bench - Geared Head |
| Swing Over Bed (In.) | 16 |
| Swing Over Cross Slide (In.) | 10.3" |
| Swing Through Gap (In.) | 23" |
| Tailstock Spindle Travel (In.) | 5 |
| Taper in Tailstock Spindle | MT 4 |
| Warranty | 2 Year |
| Width of Bed (In.) | 12.5" |
| Gross Weight | 4299 |
| Net weight | 3858 |
