https://ffmold.diytrade.com/sdp/2973497/4/pd/21085391.html?mode=11
First Punch Bushing
Good wear resistance, capricious and long life
Fine punching sleeve = down punching sleeve
Classification: pressing, clamping, unloading
Common fine blanking size:
Outer diameter: 12; 14. 18; 23. 30
Length: 14.5; 25
Fine blanking sleeve material: H13 SKD61
Fine blanking sleeve size requirements:
Pressing type: front hole punch outside diameter -0.1---- - 0.2
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