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ANSI B94.38
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ANSI B94.38 1972 Edition, January 1, 1972 Punches-Variable, Angle Head Type and Related Quill Bushings
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Description / Abstract:
This standard covers the American National Standard practice for Variable Angle Head Type Punches and Related Quill Bushings, including dimensions, tolerances, nomenclature and sizes.
The term variable indicates a precision grade with tighter tolerances than basic.
The Quill Bushing is intended for press fit mounting in the punch retainer. Its purpose is to guide and support the punch shank to prevent bending or buckling.
The term variable indicates a precision grade with tighter tolerances than basic.
The Quill Bushing is intended for press fit mounting in the punch retainer. Its purpose is to guide and support the punch shank to prevent bending or buckling.