The Sintered Metal Gear Specialist


Capstan Atlantic is the largest producer of precision Powdered Metal gears. Our capabilities include high density, high strength gears and our proprietary HD4 process™. Specializing in a large variety of applications, Capstan Atlantic provides solutions for the automotive industry and a wide range of industrial applications.

Gear Tooth Surface densification allows Capstan to respond to our customer's most demanding applications and has the following benefits;

Surface densification provides the cost reduction benefits of the Powdered Metal process while maintaining all the benefits of cut gears.

Capabilities & Facilities

  • Gears to AGMA Class 9
  • High Performance gears by combining high strength
    alloys and unique secondary operation
  • Selective densification to 7.8 grams/cc
  • Presses from 4 to 825 tons
  • In-house design, engineering & tooling capabilities
  • Metallurgical & Gear laboratory

Gear Types

  • Helical
  • Spur
  • Bevel
  • Pinion
  • Combinations
  • Spiral Bevel
  • HD4 Densification Process™

High Performance Alloys

  • Pre-alloyed Compositions
  • Diffusion Alloyed Systems
  • Chrome Steel Solutions
  • Single Pressed High Density

Ferrous & Non Ferrous Steels

  • Magnetic Grades
  • Carbon Grades
  • Nickel Steels
  • Copper Steels
  • Copper
  • Brass

Precision Gear Measurement Equipment

Capstan Atlantic utilizes advanced gear measurement equipment including in all phases of the manufacturing process, they include;

HD4™ High Performance Gear System

The HD4™ material system is a Capstan developed system that when combined with surface densification provides outstanding strength and wear properties for the most demanding applications.

The benefits of the HD4™ process are;

  • Custom designed high performance alloy system
  • Superior core density for fatigue resistance
  • Pore free surface density for contact fatigue resistance
  • Mirror like surface finish for quiet running gears
  • Precise Helix angle
  • Custom Involute profiles for noise reduction
  • Tailored Hardening process to meet aggressive rolling contact fatigue requirements
  • Wrought Steel properties with the economies of Sintered Metal