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1. Insert smooth end of drill bit (A) Fig. 30, as far as it
will go into the chuck (B), or up to the flutes for small
bits.
2. Make certain that the drill bit (A) Fig. 30, is centered
in the chuck (B) before tightening the chuck with the key
(C).
3. Turn the chuck key (C) Fig. 30, clockwise to tighten
and counterclockwise to loosen the chuck jaws.
4. Tighten all three chuck jaws to secure the drill bit
sufficiently so that it does not slip while drilling.
5. MAKE SURE chuck key (C) Fig. 30, is removed from
chuck before starting drill press. Your chuck key (C) is
equipped with a self-ejecting pin (D) which eliminates
the hazard of the key being left in the chuck.
Fig. 30
CORRECT DRILLING SPEEDS
Factors which determine the best speed to use in any drill press operations are: material, size of hole, type of drill or
other cutter, and quality of cut desired. The smaller the drill, the greater the RPM required. When drilling in soft
materials, use a higher speed than what would be used for harder materials.
OPERATION
Your drill press is to be used with drill bits of 1/2" or less in diameter. The following will give the inexperienced operator
a start on common drill press operations. Use scrap material for practice to get a feel of the machine before attempting
regular work.
WARNING: The use of accessories and attachments not recommended by Delta may result in risk of injury.
INSTALLING AND REMOVING DRILL BITS
C
D
B
A