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Mechanical Core Shaft

The Convertech Mechanical Core Shaft is a narrow web shaft that expands mechanically with a continuous lug or leaf. These custom- made mechanical shafts expand concentrically with a wrench or knob and are available in several designs and mounting styles including double journal, cantilevered, and flanged. These shafts are suitable for high speed and high torque applications and are easy to repair.


The Mechanical Core Shaft features a simple turn-the-screw operation with no air required. The mechanical design assures concentric running of the cores and absolute roll centering. The mechanical design also helps the shaft operate under high speed and high tension conditions and require low maintenance.

The Mechanical Core Shaft is available from 1” to 6” diameter and face lengths to 30” and has positive expansion and retraction to a consistent diameter.


Our Mechanical Core Shafts are custom designed to fit your specifications. When placing an order for the Mechanical Core Shaft, we ask that you specify whether you need a quote for the double journal, cantilevered or flanged version so that we can make sure your Mechanical Core Shaft fits your needs and specifications.

As with all of our shafts, we guarantee that your Mechanical Core Shaft will be designed and manufactured to the same tolerances as all of our industry’s leading shafts.


Please contact us for a more specific lead time, to request a quote, or if you have other questions.

Product Information


  • 1” to 6” diameter
  • Face lengths to 30”
  • For Double Journal, Cantilever or Flange mount
  • No air required
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