Greenlee Textron / Subsidiary of Textron Inc.
8
4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
7904SB/7906SB Hydraulic Punch Driver
Operation (cont’d)
Using the 29451 draw stud and optional 31874 step-saver adapter
1. Drill 1/2" pilot hole using Greenlee Kwik-Stepper
®
step bit.
2. Thread the adapter into the punch.
After drilling the pilot hole, use the 29451 draw stud
and 31874 step-saver adapter as shown here. These
components eliminate the need for step-up punching.
Note: The stud and adapter are rated to drive the
1-1/4" punch through 14 gauge mild steel .
Do not exceed the rated capacity of the 29451 draw
stud and 31874 step-saver adapter. Exceeding the
maximum rated capacity could cause the stud and
adapter to break and strike nearby personnel.
5. Thread the adapter with punch onto the draw stud.
4. Turn the release valve knob counterclockwise, to
make sure the draw stud is fully extended. Insert
stud through pilot hole.
3. Thread 7/16" draw stud tightly into driver. Place the
die on the draw stud.
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