Jet Tools GH-1440ZX General Description, Conversion to 460 Volt Operation, Lathe Bed, Headstock

The main motor is rated at 7-1/2 HP (or 10HP for model 2280ZX), 230/460V and comes from the factory prewired at 230V. Confirm that power available at the lathe’s location is the same rating as the lathe.

Power is connected properly when rotating the forward-reverse knob (E, Figure 12) to the left position causes the spindle to rotate counterclockwise as viewed from the tailstock. If the chuck rotates in the clockwise direction, disconnect the lathe from the power source, switch any two of the three power leads (not the green ground wire), and re-connect the lathe to the power source.

Conversion to 460 Volt Operation

Disconnect machine from power source. Failure to do so may cause serious injury.

Main Motor: Change the wires according to the diagram on the outside of the motor junction box.

Transformer: Open electrical panel on rear of machine on the headstock side. Switch wire from 230V terminal to 460V terminal as outlined on the transformer.

Coolant Pump: Open access panel on the base at the tailstock end. Change wires in coolant pump junction box according to diagram on the outside of the junction box cover.

Main Power Switch (A, Figure 9): Turns power to machine on and off.

Power Source Cable Receiver (B, Figure 9).

Make sure the lathe is properly grounded.

General Description

Lathe Bed

The lathe bed (A, Figure 10) is made of cast iron with low vibration and high rigidity. Two precision ground v-slideways, reinforced by induction hardening and grinding, are an accurate guide for the carriage and headstock. The main drive motor is mounted in the stand below the the headstock.

Headstock

The headstock (B, Figure 10) is cast from high grade, low vibration cast iron. It is bolted to the bed by four hex socket cap bolts. In the head, the spindle is mounted on precision taper roller bearings.

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Figure 9

Figure 10