Originally founded under the name J&M Machine, Inc. we recently changed names as our focus changed.  Founded in 1965 by John Stoneback, JM Performance Products has evolved from a job shop to a manufacturer of its own product lines. The focus of our company is to improve tooling performance by improving the fit of the toolholder in the spindle of a CNC milling machine. Currently we produce Taper Shank Gages, High Torque Retention Knobs, Sockets, ClampForce Drawbar Gages, and Spindle Cleaners and Refinishers.  Using the techniques and products produced by JM Performance Products a company can expect tool life to be increased by a minimum of 10% and as much as 200%.  This is all done by improving the fit of the toolholder in the spindle, reducing harmonics, and proper machine maintenance.

JM Performance Products

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JM Performance Products

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