Induction Hardening

The Solution For Case Hardened Parts


• Spur Gears

• Helical Gears

• Gear Shafts & Pinion Shafts

• Bevel Gears

• Internal Gears

• Sprockets

• Racks

• Fine Pitch Hardening

• Shafts & Pins

Specializing in Tooth By Tooth Induction Hardening


We have unique induction hardening capabilities among commercial heat treaters. Specializing in gear tooth by tooth induction hardening, AMT is a valued source for gear manufacturers. Specific capabilities include:

• Spur and helical gears up to 15 tons

• Spur and helical gears up to 220”OD

• Spur and helical shafts up to 160”OAL

• Face lengths up to 45”

• Bevel Gears up to 65”OD

• Internal gears up to 120”OD

• Sprockets of any size

• Racks up to 72”OAL

• Fine pitch induction hardening of 5-10 DP spur and helical gears

• Shafts and pins up to 85”OAL and 12”OD

We have tooth by tooth gear induction hardening capacity that is unmatched among commercial heat treaters. Our versatile CNC controlled equipment includes:

• Five Ajax coarse pitch hardening machines (.5DP-5DP)

• Three external Natco submerged process machines (5DP-10DP)

• Two Internal Natco submerged process machines (1DP-8DP)

A mix of solid state, motor generator and radio frequency power supplies allow hardening of a wide variety of parts to case depths up to .250”. Our in house machine shop provides quick tooling for any production runs.