Page 8 - American Punch Ironworker Tooling Catalog

PUNCHING TIPS
TYPICAL DIE CLEARANCE FOR PUNCHING MILD STEEL
PUNCH MATERIAL THICKNESS
SIZE 1/8 1/4 3/8 1/2 5/8 3/4
STANDARD CLEARANCE RECOMMENDED BETWEEN PUNCH AND DIE Standard die size size is punch size size plus 1/32" or 1/16"
For 3/16 - 1/2" material thickness allow 1/32" total clearance
For 1/2 - 3/4" material thickness allow 1/16"
total clearance
Over 3/4" material thickness allow 3/32" total clearance
LET’S
3/16 13/64 1/4 17/64
5/16 21/64 11/32 3/8 25/64 13/32 7/16 29/64 15/32 1/2 33/64 17/32 9/16 37/64 19/32 5/8 41/64 21/32 11/16 45/64 23/32 3/4
49/64 25/32 13/16 53/64 27/32 7/8 57/64 29/32 15/16 61/64 31/32
1 1 1 1 1 1-1/64 1-1/32 1-1/16 1-5/64 1-3/32 1-1/8 1-9/64 1-5/32 1-3/16 1-13/64 1-7/32 1-1/4 1-17/64 1-9/32
1-5/16 1-21/64 1-11/32 1-3/8 1-25/64 1-13/32 1-7/16 1-29/64 1-15/32 1-1/2 1-33/64 1-17/32
15/32 17/32 19/32 5/8 21/32 11/16 23/32 3/4
3/4
3/4
3/4
25/32 13/16 13/16 13/16 13/16 27/32 7/8 7/8 7/8 7/8 29/32 15/16 15/16 15/16 15/16 31/32
1 1 1 1 1 1 1-1/32 1-1/16 1-1/16 1-1/16 1-1/16 1-3/32 1-1/8 1-1/8 1-1/8 1-1/8 1-5/32 1-3/16 1-3/16 1-3/16 1-3/16 1-7/32 1-1/4 1-1/4 1-1/4 1-1/4 29/32 31/32
1-1/32 1-3/32 1-5/32 1-7/32 1-9/32
1-11/32 1-13/32 1-15/32 1-17/32
1-19/32
TA T T ALK
1-9/32
1-11/32 1-13/32 1-15/32 1-17/32
1-5/16 1-5/16 1-5/16 1-5/16 1-3/8 1-3/8 1-3/8 1-3/8 1-7/16 1-7/16 1-7/16 1-7/16 1-1/2 1-1/2 1-1/2 1-1/2 1-9/16 1-9/16 1-9/16 1-9/16 It is not recommended
to punch material that is thicker than the diameter of your punch Call us if you have any questions PUNCH SIZE THICKNESS
3/16 3/16 1/4 1/4 5/16 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4
13/16 7/8 15/16 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1-1/8 1-1/4 REQUIRED TONNAGE FOR PUNCHING MILD STEEL
WITH TENSILE STRENGTH OF 50 000 PSI
MATERIAL 3/16 187
3 4 5 6 7 8 9 9 9 9 10 5 6 8 9 10 11 13 14 111315171921 20232528 31 34 REQUIRED TONNAGE 11 12 15 16 23 24 30 33 38 41 45 49 13 14 15 17 19 1/4 3/8 1/2 5/8 3/4
7/8 1 250 375 500 625 750 875 1 000 18 26 35 44 53 61 19 28 38 47 56 66 20 23 25 30 33 38 40 45 50 50 56 60 68
70 78 88 80 90 100
63 75 8 www AmericanPunchCo AmericanPunchCo com com • • sales@AmericanPunchCo com com • • fax 800 800 261 6270 800 243 1492
DIE SIZES