15
Figure 24
The drill press chuck will automatically return
upward to its
original starting position when the
operating handle is released. The Return Spring
Mechanism, Figure 24, has been preset at the
factory and should not require any adjustments.
However, should the spring tension decline and
need adjustment, follow these steps;
1. Disconnect the Drill Press from its power
source.
2. Loosen the 2 Spring Cover Nuts (A), but
DO
NOT REMOVE the nuts from the threaded pin.
3. Carefully pull out the Spring Cover (B) slightly,
and keep a firm grasp on it - DO NOT LET
THE COVER SPIN as it keeps the spring from
unwinding. Also, DO NOT let the spring end (C)
disengage from its notch in the cover!
4. Pull out the cover just enough so that the
notch in the cover clears the nub on the head
casting (D).
B
A
D
C
5. Rotate the cover to another notch as needed;
-
CLOCKWISE to decrease the spring tension,
-
COUNTER-CLOCKWISE to increase spring
tension.
6. With the cover in the new position, push it back
in place and tighten the spring cover nuts back
against the cover to complete the adjustment.
ADJUSTMENTS
SETTING THE RETURN SPRING TENSION
THE MACHINE MUST NOT BE
PLUGGED IN AND THE POWER SWITCH MUST BE IN THE
OFF POSITION UNTIL ALL ADJUSTMENTS ARE COMPLETE.
DRILLING SPEEDS
This Drill Press has a
speed range from 180 to 3865
RPM. The correct drilling speed for your work
depends on a variety of factors:
a) the workpiece material & hardness
- wood, composites, plastics or metal
b) the size of hole diameter
c) the depth of the hole
d) the type of drill bit or other cutter needed to make
the desired hole diameter and depth
e) the quality of the bore
We recommend consulting various books, magazine
articles, drill bit and material manufacturers’ informa-
tion for information on the proper operating speeds
and types of drills for the material or hole desired.
- A general rule: The larger the hole and the harder
the material = the slower the RPM speed.
WORKPIECE POSITIONING
Always use clamps or hold-downs
to secure the material onto the drill press table during
drilling. This will prevent the work from being torn from
the operator’s hand should the drill bit gets caught
in the material. Clamping the work to the table is
particularly necessary if the table is tilted on an angle.
Place a scrap board or piece of plywood under your
work to protect the metal table, drill bit, and to provide
a solid base for a clean hole if the drill bit exits the
work.
To prevent work from spinning, if possible, position the
work to rest against the left side of the column. For
shorter pieces, use a clamp or drill press vise secured
to the table.
Feed bits into the material at a constant rate to allow
the bit to work. Too slowly may cause the wood to
burn and ruin the bit. Too fast may put excessive
stress on the motor and cause the bit to break.
NOTE:
See page 6 for important safety information
on drilling set-ups and procedures.
OPERATION
