JET GHB-1340A Metalworking Lathe

Description

A 13in swing combined with 40in center distance gives repair shops reliable metal turning capacity. The JET GHB-1340A Geared Head Lathe delivers solid turning without phase converter power requirements. A 2HP motor powers 8 geared speeds up to 1,500 RPM. The enclosed headstock runs quiet, though the bare machine requires manual micrometer coordinate tracking.

Monolithic Meehanite gray iron anchors this lathe bed to absorb cutting vibrations on tough passes. Induction-hardened bedways test at 60 HRC, keeping steel chips from galling ground surfaces. The 2HP motor operates on 230V single-phase power, drawing 11 FLA under full load. Headstock gears turn in a sealed oil reservoir. The machine weighs 1,450 lbs on floor dimensions of 68in long by 30in wide.

Key Features of JET JT9-321115

Maintenance mechanics and gunsmiths run this gear head lathe to sleeve motor shafts, cut replacement lead screws, and face flanges. Compare equipment vendor inventory to buy JET JT9-321115 packages for commercial repair toolrooms.

• Single-phase 230V motor runs straight on common shop circuits without requiring rotary phase converters.
• Eight geared spindle speeds from 70 to 1,500 RPM provide heavy torque for roughing and high speed for polishing.
• D1-4 camlock spindle nose mounts 3-jaw and 4-jaw chucks with solid radial lockup and fast chuck swaps.
• Quick-change gearbox provides feeds for cutting 40 imperial and 23 metric thread pitches without gear swaps.
• Removable bed gap expands work diameter clearance up to 20in right forward of the chuck face.
• Separate lead screw and feed rod stop premature leadscrew thread wear during standard turning cuts.
• Front-mounted emergency stop button cuts electrical control power to halt spindle momentum fast.

Spindle Concentricity Bench Load Metrics

Dial test indicators confirm spindle nose runout under 0.0003in TIR measured at the chuck register face. Take a 0.100in deep cut in 1045 cold-rolled steel, and carriage feed thrust reaches 750 lbs with zero bed twist. Spindle speed drops by 14 RPM under heavy parting tool loads at 320 RPM. Headstock casting temperature stabilizes at 130°F after 3 hours of continuous metal turning. Carriage alignment holds parallel within 0.0004in.

Feed Controls Routine Shop Maintenance

Carriage feed levers click into travel positions with positive mechanical detents, preventing accidental feeds into rotating chucks. Handwheels turn without drag, giving you fine control on critical facing passes. Do not buy this lathe for heavy oilfield casing pipes or production bar feeding runs.

• Spread ISO 68 way oil across the bedways and cross slide surfaces every morning before starting work.
• Check headstock gear oil level through the sight glass window every 30 days.
• Adjust cross slide brass gib screws every 3 months to keep handwheel backlash under 0.003in.

Factory Lathe Warranty Crate Manifest

JET backs this geared lathe with a 2-Year Red Assurance warranty protecting all casting, gear, and motor assemblies. The factory wooden shipping crate contains a 6in 3-jaw chuck, 8in 4-jaw chuck, faceplate, steady rest, follow rest, toolpost, splash guard, and operating guide.