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Precision CNC Turning & Heat Treating of Tool Steel Roller Guides

Precision CNC Turning & Heat Treating of Tool Steel Roller Guides

A client in the mill rolling industry needed roller guides fabricated for use in a bar and wire rolling mill. They came to McCorkle Machine & Engineering because of our precision CNC machining and heat treating expertise. We fabricated the roller guides using D-2 tool steel, HT to 60-64 Rc, turned to an outside diameter of 2.9921" and a length of 2.3622". We worked to tolerances of + 0.0003"/-0.0013", concentricity: 0.0005", producing a 16 µ in. finish. Even after heat treating, the finished components required no finish grinding.

Our in-process inspections included checking dimensions at various stages prior to heat treatment and final dimensions after heat treat. We also checked surface finish after finish turn and bore after heat treat. For more information about this CNC turning and heat treating roller guide project, please see the table below or contact us directly.

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Highlights of this CNC Turning & Heat Treating of Roller Guides Project

Product Description

These roller guides are used in a bar and wire rolling mill.

Precision CNC Turning Capabilities Applied/Processes

CNC Turning

Equipment Used to Manufacture Part

  • CNC Lathe

Overall Part Dimensions

  • O.D.: 2.9921"
  • Length: 2.3622"

Tightest Tolerances

  • + 0.0003" / - 0.0013"
  • Concentricity: 0.0005"

Material Used

  • D-2 Tool Steel
  • HT to 60-64 Rc

Max Material Finish

16 µ in.

In Process Testing / Inspection Performed

Close tolerances on ID's and some lengths. Dimensions checked at various stages prior to Heat Treatment and final dimensions after Heat Treat. Also surface finish after finish turn and bore after Heat Treat.

Industry for Use

Mill Rolling Industry


From 4 to 24 depending on size.

Delivery / Turnaround Time

About two weeks total.

Delivery Location

Huntington, West Virginia

Standards Met

In-House Drawing

Product Name

Bar & Wire Mill Roller Guide

We have the expertise and the precision necessary to do even the most demanding job. But along with our extensive experience, we still possess enough youthful enthusiasm and innovation to keep doing great things for our customers. McCorkle Machine & Engineering is in business to do quality work. Our machinery and parts are not only designed to work, but work to perfection.


  • Office:

    125 Third Ave
    Huntington, WV 25701

  • Phone:

    (304) 523-6428

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