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Description / Abstract:
Object and Scope
This Standard establishes (1) American standard practice for the
slope of self-holding and steep machine tapers, (2) the detailed
dimensions for this type of taper tool shank, (3) the corresponding
dimensions for the taper socket in the spindle of the machine,
including the dimensions of keyways. This, it is hoped, will serve
as a guide for future designing of machines and related equipment
utilizing tapers that come within the ranges specified in the
various tables.
The purpose of a machine taper is to provide a connection
between the tool, arbor, or center and its mating part which will
insure and maintain accurate alignment between the parts and yet
permit the parts to be readily separated for reconditioning or for
the substitution of other parts.
This Standard as published includes the tapers which are
presented as the recommended standard for application where either
self-holding or steep tapers are desiredA. n appendix to meet the
demands for an authoritative source for data on such tapers as are
sometimes used by industry and lie outside the standard has been
added.