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..."IN STOCK"... Supplying High
Quality Tools and Supplies for Machine Shops, Plant Engineering
and Maintenance since 1955
Spline-Taper Drive Counterbore
Assembly
with Taper Shank
National Spline-Taper Drive Interchangeable Counterbores are designed for Heavy Duty Counterboring operations. Their construction incorporates the following features:-
RUGGEDNESS-Counterboring tools, as a class, are usually called upon to perform under heavy duty and adverse conditions. Particular attention has been given to the proper backing up of the cutting edges, ample proportions of shanks and splines, and general all-round ruggedness.
PERMANENT ALIGNMENT-The Taper Shank and Socket construction provides permanent alignment and rigidity. Reasonable wear on tool shank or holder socket does not result in looseness or misalignment.
INTERCHANGEABILITY-All cutters of the same diameters, as well as all other sizes in a given series or range will fit interchangeably in the holder designated for that range. For example, all counterbore cutters from 7/8" to 11/4" diameter, inclusive, will fit No. 20 holders, regardless of whether the holder has straight or tapershank, or is of some special design.
SIMPLICITY-The simplicity of design of the Spline Taper Drive is one of its best recommendations. Taper Shank and Socket for alignment and rigidity, Spline Keys for jam-proof and twist-proof performance-that is all there is to it.
ADAPTABILITY-Because ot the Ruggedness, Permanent Alignment, Interchangeability and Simplicity of National Spline-Taper Drive Tools, they lend themselves to a wide variety of operations. Standardized tools can usually be employed; but where conditions demand special designs, these can be incorporated. Standard holders can be used with special cutters, or standard cutters can be fitted to special holders, thus effecting the greatest possible economies.
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