JET GH-1440-3 with 200S DRO

Description

Meet OSHA industrial shop electrical safety standards with fully enclosed switchgear and protective chuck interlocks. The JET GH-1440-3 Lathe with DRO provides three-phase metalworking power across a 14 in swing and 40 in centers. A 3 HP motor delivers 12 geared spindle speeds for accurate turning. The ACU-RITE 200S DRO speeds part setup, though shifting headstock gears requires stopping the spindle.

The one-piece machine bed features Meehanite gray cast iron construction with diagonal cross-rib stiffeners. Precision ground bedways undergo induction hardening to 60 HRC. The 3 HP motor operates on 230V or 460V 3-phase power, drawing 8.8 FLA at 230V. Hardened alloy gears run in a continuous oil bath inside the headstock. Total weight measures 2,425 lbs with a 77 in by 32 in footprint.

Key Features of JET JT9-323403

Maintenance departments use this mid-sized lathe to machine pump impellers, sleeve worn motor shafts, and cut replacement lead screws. Compare equipment vendor pricing to buy JET JT9-323403 inventory for plant toolrooms.

• ACU-RITE 200S digital readout displays carriage and cross slide positions to eliminate manual backlash tracking.
• Twelve geared spindle speeds from 40 to 1,800 RPM match recommended surface feet per minute for alloy steels.
• D1-4 camlock spindle allows fast chuck changeovers while maintaining tight centerline concentricity.
• Independent lead screw and feed rod prevent unnecessary leadscrew wear during everyday turning passes.
• Foot brake pedal cuts motor control power and stops heavy spindle momentum for rapid workpiece changeouts.
• Universal quick-change gearbox provides feed rates for cutting both inch and metric threads without gear swaps.
• Bed gap section removes with four bolts to increase maximum swing diameter to 20 in near the spindle nose.

Spindle Deflection Vibration Load Testing

Bench tests confirm spindle nose runout under 0.0003 in TIR with the chuck removed. Taking a 0.125 in cut in 1045 cold-rolled round bar produces zero harmonic chatter at 520 RPM. Carriage feed force reaches 900 lbs before shear pin deflection occurs in the apron drive train. Headstock casting temperature peaks at 135°F during 3 hours of continuous operation. Tailstock quill runout measures under 0.0002 in at 3 in extension.

Feed Lever Feedback Preventive Care

The apron feed engagement lever snaps into travel positions with positive mechanical bite. Large handwheels on the carriage apron clear the chip pan rim easily, allowing smooth hand feeding with work gloves. Do not buy this lathe for heavy oilfield casing pipes exceeding 1-1/2 in outer diameter.

• Check the headstock oil sight gauge daily and top off with ISO 68 machine oil.
• Pump the carriage manual one-shot lubricator before every shift to keep bedway wipers wet.
• Inspect the cross slide brass gib adjustment screws monthly to keep backlash under 0.002 in.

Warranty Statement Factory Shipment Manifest

JET covers this lathe with a 2-Year Red Assurance warranty protecting all casting, electrical, and gear assemblies. The factory crate includes the lathe, ACU-RITE 200S DRO, 6 in 3-jaw chuck, 8 in 4-jaw chuck, 12 in faceplate, steady rest, follow rest, splash guard, and toolkit.