Splined Hubs

NETFORM has developed a unique cold forming process for splined clutch hubs.

Hubs are produced with ready-to-use splines and varying cross sections through the utilization of proprietary cold forming technology.

These splined components have significant cold working that can eliminate the need for previously planned heat treatments. Our unique process also allows for part consolidation resulting in the elimination of welds, reduction in machining capital, tooling, supply-base activities and warranty issues.

Product Domain




Technical Information

  • Materials: 1010-1035 & HSLA’s
  • Diameter:  Up to 150mm
  • Max. Spline Length:  Up to 30mm
  • Hub Length:  Up to 50mm
  • As-Formed Features:  OD Spline & More
  • Work Hardening:  2-3 x base material
  • Spline Capabilities: 
    • Major / Minor ±0.15mm
    •  Tooth Space ±0.05mm


Cold forming (also called cold forging or coining is a process where material is transformed into new shapes at room temperate in high-tonnage presses.

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The very nature of the cold forming process requires material with highly formable properties.  These properties do not lend themselves easily to machining.  Chip management is particularly challenging due to the machined material not wanting to break during machining.

In addition, the nature of cold forming requires that excess material over the finished components is minimized.  This result in very small depths of cut during machining.

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Case Study

See how Netform helped a major OEM manufacturer with cost-saving and efficient splined hub solutions.

Splined Hub Case StudySplined Transmission Case Study

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