Jet 892100, Operating Instructions And Parts Manual

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EGH1740 | EGH1760
threading controls.
E. Spindle rotation, forward, stop and reverse.
Fig. 13
9.2 ELECTRICAL CONTROL PANEL
With the exception of the lathe isolator, all electrical
controls are fitted onto the front face of the headstock.
1. WORK LAMP: On/Off switch.
2. POWER INDICATOR LIGHT: When the power is on,
the indicator light glows.
3. COOLANT PUMP: On/Off switch.
4. JOG BUTTON: Push it to move spindle slightly, this
will make spindle speed selection easier.
5. EMERGENCY STOP SWITCH: Press in order to kill
all electric power to lathe.
Fig. 14
9.3 HEADSTOCK SELECTORS
Spindle speed selector
1. The upper two selectors on the headstock are
for spindle speed selection. There are 16 spindle
speeds, as shown on speed chart, divided into four
groups. Each speed is the result of combining the
above two selectors.
2. For instance, if 1000 r.p.m. of spindle speed is to be
chosen, then move left selector to D, and two-speed
motor switch to low range.
H-N-L selector for gearbox
1. Following each feed rate or thread pitch on gearbox
thread and feed chart, there is a prefix of either H or
L.
2. Move H-N-L selector to H or L accordingly for
feeding or threading. If this lever is positioned at
N, the headstock rotation will not be transmitted to
gearbox.
Apron orientation selector
1. This selector may affect the rotation orientation
of the lead screw, feed rod and henceforth the
movement direction of apron.
2. Right-hand arrow (toward tailstock) is used for
cutting right-hand threads. Left-hand arrow (toward
end-guard) is used for cutting left-hand threads.
Fig. 15
9.4 THREADS AND FEEDS
Gearbox, thread and feed selectors
All the thread pitches and feeds directly available from the
gearbox are shown on the data plate fitted on the front
of headstock and the positioning control levers are (G1),
(G2), (G3), and (G4).
B
A
A
C
D
E
1
2
3
4
5
1
2 3