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Expanding Mandrels

Expanding Mandrels

Expanding Mandrels

Expanding Mandrels

Expanding Mandrels are precision workholding devices designed for accurate internal clamping of components during turning, grinding, milling, gear cutting, inspection, and other precision machining operations. Manufactured from high-grade alloy steel and precision-ground to tight tolerances, these mandrels provide exceptional concentricity, rigidity, and repeatability. Their expanding mechanism ensures uniform clamping force over the internal bore, minimizing distortion while delivering superior machining accuracy and surface finish for high-precision manufacturing applications.

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Key Features

  • Manufactured from premium-grade alloy steel for exceptional strength, rigidity, and long service life
  • Precision-ground to ensure excellent concentricity, minimal runout, and superior dimensional accuracy
  • Internal expanding mechanism provides uniform clamping force without damaging the workpiece
  • Ensures secure, repeatable workholding for high-precision machining and inspection operations
  • Suitable for turning, grinding, milling, gear cutting, balancing, inspection, and finishing applications
  • Ideal for holding components with pre-machined internal bores, including gears, bushes, bearings, sleeves, pulleys, and precision-machined parts
  • Available in mechanical, hydraulic, pneumatic, and customized expanding mandrel configurations to suit specific applications
  • Compatible with CNC lathes, grinding machines, machining centers, gear cutting machines, and other precision machine tools
  • Reduces setup time, improves machining stability, enhances surface finish, and increases overall productivity
  • Widely used in automotive, aerospace, defence, bearing manufacturing, gear production, die & mould, precision engineering, and general manufacturing industries