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Functional Overview
The Model H8371 power feed is designed to
install on the right side of a knee mill table to pro-
vide powered longitudinal movement of the table.
Refer to Figure 2 and the descriptions below to
become familiar with the functional parts of the
power feed system.
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Figure 2. Power feed system.
A. Limit Switch: Stops powered table move-
ment when either limit stop presses a plunger
on the switch.
B. Limit Stop: Activates the limit switch. Secure
these devices along the table to set the range
of movement.
C. Rapid Movement Button: Moves the table
at the maximum speed in the direction select-
ed.
D. Direction Lever: Starts, reverses, and stops
longitudinal table movement.
E. Speed Dial: Controls the speed that the table
moves—turn the dial clockwise to increase
the speed.
F.
Reset Button: When a current over 3.5
amps passes through the unit for more than
10 seconds, the internal circuit switch will cut
the power to the unit. Investigate and resolve
any problems, then use this button to reset
the internal circuit switch.
G. ON/OFF Switch: The master power switch
for the power feed.
H. Power Lamp: Lights when the power feed is
turned ON.
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Installation
1.
DISCONNECT THE MILL FROM POWER!
Note: During the next step, take care not to
misplace the leadscrew keys.
2.
Remove the handle and graduated dial
assemblies from the right side of the longitu-
dinal (X-axis) leadscrew.
3.
Determine if there is adequate support on
the mill to mount the power feed unit onto the
leadscrew.
— If adequate mounting for the power feed
unit exists at the end of the leadscrew, you
do not need to use the optional mounting
bracket. Continue with Step 4.
— If there is not adequate mounting for the
power feed unit, you will need to use the
provided mounting bracket. Proceed to
Using the Mounting Bracket on Page 4.
4.
Make sure the leadscrew is clean of debris
and oil, then slide the power feed unit onto
the leadscrew and up against the mill, as
shown in Figure 3.
Cap Screws
Spacers
Figure 3. Power feed unit mounted on the
leadscrew.
Note: Use the spacers provided where nec-
essary to ensure that the parts installed on
the leadscrew stay snug up against one
another.
H8371 Power Feed for Knee Mills
Leadscrew
Keys
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