The JET GH-1640ZX Large Spindle Bore Lathe with ACU-RITE 203 DRO and Taper Attachment is a heavy-duty geared head lathe engineered to deliver power, precision, efficiency, and reliability in professional metal shop environments. Built on a one-piece cast iron base that absorbs vibrations for heavier cuts and superior accuracy, this 16 x 40 lathe features a Universal Gearbox that eliminates the need to change gears manually. An integrated ACU-RITE 203 Digital Readout and taper attachment expand its capability, making it a versatile centerpiece for demanding machining operations. Backed by the industry-leading JET Two Year Warranty.

Key Features

• Articulating LED work lamp provides focused, adjustable illumination at the workpiece
• Centrally located controls with jog button for convenient, safe operation from a single position
• Electronic Chuck Key Holder eliminates the hazard of leaving the chuck key in the chuck
• Five position automatic carriage stop increases productivity by enabling repeatable, precise carriage positioning
• Full length splash guard and coolant return keeps the work area cleaner and protects the operator
• Large capacity steady rest with ball bearing tips supports long workpieces with reduced friction
• Large easy to use foot brake allows rapid, hands-free spindle stopping for improved safety
• Mounting pads and levelers provide a stable, precisely leveled installation on shop floors
• Removable gap allows large diameter work to be machined that would otherwise exceed swing capacity
• Tool box and adjusting tools included for setup and maintenance convenience
• One-piece cast iron base absorbs vibration during operation for heavier cuts and greater accuracy
• Universal Gearbox eliminates the need to change gears for thread and feed rate changes
• ACU-RITE 203 Digital Readout (DRO) included for precise, real-time axis position measurement
• Taper attachment included for machining tapered workpieces without offsetting the tailstock

Specifications

• Stock Number: 321508
• Size: 16 x 40
• Drive: Geared Head
• Motor: 7-1/2 HP, 230/460, 3 Ph
• Range of Spindle Speeds (RPM): 25-1,800
• Number of Spindle Speeds: 12
• Spindle Bore (In.): 3-1/8
• Spindle Mount: D1-8
• Spindle Taper with Sleeve: MT-7 (MT-5)
• Carriage Travel (In.): 35
• Cross Slide Travel (In.): 9
• Compound Slide Travel (In.): 5-1/8
• Max Tool Size (In.): 1 x 1
• Length of Gap (In.): 12-1/4
• Number of Inch Threads: 61
• Range of Inch Threads (TPI): 1-5/8-72
• Number of Metric Threads: 24
• Range of Metric Threads: .05-20
• Number of Longitudinal and Cross Feed Rates: 46/31
• Range of Longitudinal Feeds (IPR): .0015-.0900
• Range of Cross Feeds (IPR): .0006-.0360
• Overall Dimensions (L x W x H) (In.): 96 x 44 x 66
• Country of Origin: China
• Prop 65: Cancer and Reproductive Harm

Frequently Asked Questions

What spindle bore size does the GH-1640ZX offer, and why does it matter?

The GH-1640ZX features a large 3-1/8 in. spindle bore. This oversized bore allows longer bar stock and larger diameter workpieces to be fed through the spindle, reducing the need to cut stock down before machining and significantly expanding the range of parts that can be turned on this lathe.

What is the spindle speed range and how many speeds are available?

The spindle operates across a range of 25-1,800 RPM with 12 selectable speeds. The geared head drive and Universal Gearbox allow the operator to change speeds and feeds without swapping gears, keeping setup time to a minimum.

What thread cutting capabilities does the GH-1640ZX provide?

This lathe is equipped to cut 61 inch thread pitches ranging from 1-5/8-72 TPI, as well as 24 metric thread pitches ranging from .05-20 mm. It also offers 46 longitudinal feed rates (.0015-.0900 IPR) and 31 cross feed rates (.0006-.0360 IPR), giving the machinist extensive versatility for both threading and turning operations.

Does the lathe include a gap bed, and how long is the gap?

Yes. The GH-1640ZX features a removable gap that is 12-1/4 in. long. Removing the gap piece allows the operator to swing significantly larger diameter workpieces that would otherwise exceed the standard over-bed capacity, making it well suited for facing large flanges, discs, and similar parts.