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The 2-1/2 and 3 inch (63 and 76mm) die inserts are designed to fit in the standard die holder in place of
the 2 inch (51mm) insert. They are used in oversize punching applications. for applications,
REFER TO THE PUNCH AND DIE SECTION OF THE TOOLING PARTS MANUAL.
7.11 OPTIONAL PUNCH AND DIE HOLDERS
7.11A 2-1/2" AND 3" DIE INSERTS
The offset die holder is used for punching holes in the flange of structural shapes such as channel, Ibeam
and H-beam. The offset die holder is installed in place of the standard die holder. The offset
die holder requires four bolts to anchor it to the bolster. Use the two bolts provided with the die holder.
Use the same method of installing and aligning punches and dies as outlined in SECTION 6.1, with a few
exceptions. The die holder must be removed to install a new punch and die. The down stroke of the
machine must be set. Use the instruction sheet that came with the die holder.
7.11B OFFSET DIE HOLDER FOR FLANGE PUNCHING
The offset die holder is designed to be used in conjunction with an offset stripper.
The standard stripper will not work with the offset die holder.
Always follow the preferred method of aligning punches and dies. SEE SECTION 6.1. The 6 x 6 die
holder is installed in place of the standard die holder. The 6 x 6 die holder requires four mounting bolts
that are shipped with the tool. Capacities for oversize punching with this tool go up to 4 inch (102mm)
diameter rounds. For sizes and applications, REFER TO THE PUNCH AND DIE SECTION OF THE
TOOLING PARTS MANUAL.
7.11C 6 X 6 DIE HOLDER
The #45 punch retaining nut is of the same design as the #40 and is used in oversize punching applications.
For applications, refer to the PUNCH AND DIE SECTION OF THE TOOLING PARTS MANUAL.
7.11D # 45 PUNCH RETAINING NUT
CAUTION: FAILURE TO SET THE STROKE WILL ALLOW THE PUNCH RETAINING NUT
TO STRIKE THE DIE HOLDER, CAUSING DAMAGE TO THE MACHINE AND
POSSIBLE INJURY TO THE OPERATOR. BECAUSE OF ITS DESIGN, THE
OFFSET DIE HOLDER HAS A MAXIMUM CAPACITY OF 40 TONS.
EXCEEDING 40 TONS WILL DAMAGE THE TOOL AND MAY CAUSE INJURY
TO THE OPERATOR. FOR PUNCH TONNAGE REQUIREMENTS,
REFER TO FIGURE 9 ON PAGE 27.
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