Stagnoli Offers Plastic Gearing for High Performance Applications

The request for higher performance solutions intensifies metal replacement activity in many fields like automotive, medical, aerospace, electrotechnics. Currently, about the 16 percent of weight in a vehicle is in plastic, and it is expected to reach at least 25 percent within the next five years.

Metal replacement projects requires experience from the material choice to the functionality of the final product. For 30+ years, Stagnoli has been a leader in designing and producing techno-polymer mechanic transmissions for any type of application.

The company offers a wide range of spur gears, bevel gears, timing pulleys, belt tensioner pulleys, sprockets, chain tensioner sprockets, joints, racks and planetary gearboxes in PA6-Stagnoli Fiber Torque. Geometric and dimensional characteristics (UNI 6773 and UNI 4760 standards) makes them interchangeable with the respective metal products.

Stagnoli has a department dedicated to mechanical machining (CNC) to customize standard products to client needs (bores, keyway etc).

Benefits of techno-polymer gears include lightness, low noise, self-lubrication, chemical inertia, and a cost-savings on machining and lubrication.

S-Torque Gears

PA6-Stagnoli Fiber Torque is a semi-crystalline polyamide. Production of these polymers requires the repeated joining of an amine group and a terminal carbonyl component of a functional group. These gears are used in applications that require low engine speed and high transmissible torques.

S-Speed Gears

POM-Stagnoli Celeretal is a partially semi-crystalline thermoplastic material that is formed during the formaldehyde polymerization. These gears are used with applications that require high rotation speed and low transmissible torques; they also have a good dimensional stability essentially above all at a low hygroscopicity (low water absorption) of the techno-polymer, good sliding properties and wear resistance; they are physiologically inert (suitable for contact with food) and have good resistance to a wide range of chemicals.

S-Shock Gears

PK-Stagnoli Keton Shock is chemical compounds in which several ketone groups are present. Precisely the identifying term of synthetic polymers composed of carbonyl groups (C = O) spaced from other related groups (for example, alkyls).

They have a chemical resistance and hydrolysis that is usually detectable only on plastic materials with high performances that are positioned in much higher price ranges, as in the case of PEEK or PPS; it has low water absorption which translates into excellent dimensional stability, has a high barrier effect and high toughness and impact resistance.

The S-Shock, compared to the S-Speed series, can be managed at a higher operating temperature, ensure greater chemical resistance and impact and thanks to an excellent surface finish reduces the squeaking that occurs when the resin acetal rotates in contact with another type of techno-polymer.