Powder metal gears

Powder metallurgy is an ideal technology for manufacturing gears because it creates the geometry of the teeth directly in the compacting operation.

It also allows the manufacture of gears of different sizes, profiles and shapes (straight, double or helical), of steels with different alloying grades, finished with heat treatments (case hardening, carbonitriding, induction hardening, steam treatment) or with a stainless steel base.

In the choice of materials, sinterhardened steels are particularly important because they already have high hardness when they leave the sintering furnace, without the need for subsequent heat treatment.

AMES is able to manufacture high-density, high-performance gears using the AmesDens-A® and AmesDens-C® processes. The process to be used depends on the geometry and density that are required.

For top-performance gears, AMES offers its SurfaDens® surface densification process, which achieves an accurate tooth profile and a surface density comparable to that of a conventional wrought steel.

The most common applications of powder metal gears are shown in the following images:

Gearboxes for various applications, starter motors (drive pinions and planet gears), regulating motors for mirrors, sunroofs, seats, transmissions, electrical appliances, handtools, household appliances.

Piñones de sistemas reductores

Oil pumps, water pumps, steerings, camshafts, crankshafts, clutches, transfer cases, etc. For camshaft and transmission sprockets, the SurfaDens® process allows the maximum surface density to be obtained.

Piñones y poleas de conexión de sistemas

Oil pumps, fuel pumps or SCR pumps.

Piñones para transferencia de fluidos

Gears and toothed parts for multiple applications.

Piñones y piezas dentadas de formas diversas


powder metal manufacturing process
Basic manufacturing process
Recommended shapes
Advantages of sinterng
Advantages of powder metallurgy
typical dimensional tolerances achievable in a sintered part
Dimensional accuracy