FOR FAST, ACCURATE MOUNTING OF
MECHANICAL/AIR-FEED DRILLS, TAPPERS AND BACK SPOTFACERS
All American(r) Drill Bushing Tips provide a fast, accurate method for portable/stationary mounting of drilling, tapping and other self-contained machining units on a jig/fixture. The threaded end of the drill bushing tip screws into the nose end of the drilling unit. The helical flanges on the tip fit under the shoulders of the lock screws/lock strips on the jig, effectively holding the drilling unit in alignment position and absorbing drilling thrust and torque.
The Drill Bushing Tips are finished to order to the drill size specified by the user. They are available for applications from No. 70 drill up through 1-15/32" diameter.
All American Drill Bushing Tips and Accessories fit all standard automatic feed drill motors including Gardner-Denver, Keller, Aro, Buckeye, Quackenbush, Ingersoll-Rand, etc.
OUTSTANDING FEATURES
1. Drill guide hole is finished to A.N.S.I. specifications and
to customers exact dimensional requirements.
2. Counterboring for chip clearance hole prevents jam-up
of chips, working their way back into the nose piece and
out of the nose piece slots.
3. Helical milling gives quick, positive lock of the drill
bushing tip under the heads of the lock screws.
A 30º turn locks or unlocks the drill bushing tip.
4. Square shoulder and concentric alignment diameter
accurately line up the drill bushing tip with the axis of
the tool.
5. Collar and threads are heat treated and hardened to
produce strength and provide wear resistance. The
shank is hardened for maximum wear resistance.
6. Marked with the part number and drill size for easy
identification and simplicity in reordering.
7. Precision ground shank with entering bevel for easy
insertion in lock liner bushing.
8. Coolant holes provide positive flow for chip removal and
cooler drilled parts. NOTE: Coolant holes are available
on 11000, 12000, 13000, 14000, 15000 series
bushings.
Construction:
All drill bushing tips are constructed by a two-piece method
consisting of a collar and a pressed-in shank. The collar
contains the screw threads, alignment diameter and the lock
flange. The shank contains the A, B and C dimensions
listed in the chart on page 2.56 through 2.61. Maximum and
minimum drill sizes (A) for drill bushing tips are shown in the
column headings of the chart. Collars/shanks only of
Two-piece drill bushing tips may bee ordered separately for
replacement purposes, see ordering information.
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