Tag Archive for: Custom High-Speed Gearbox

Cotta recently designed and built this new High-Speed Gearbox Model SN2285 for testing use on aerospace products by a customer in the Indianapolis, IN area. Our Model SN2285 is a foot-mounted, single increasing stage, single output, high-speed gearbox that is designed for test stand use. This model comes standard with a double-keyed stub input shaft and an aerospace output mounting pad. The input can be driven clockwise or counterclockwise, with the output rotating in opposite direction to the input. Due to its compact size, this gearbox is designed to operate with a remote lube supply.

Model Series SN2285 High-Speed Gearbox Specifications:

  • Nominal Power of 150 hp at 70,000 rpm
  • Max Output Speed of 85,000 rpm
  • Ratios of 5:1 or 6:1 overspeed; other ratios are available
  • Max Accel / Decel Rate of 2,000 rpm/sec at output
  • Approximate Weight of 300 lbs.

For more information about Cotta SN2285 and other high-speed gearboxes in our line, visit our HSG products page.

Built to provide many years of service, Cotta High-Speed Gearboxes are offered in a variety of standard and customized designs. For over 50 years, we have designed and manufactured a diverse line of high-speed gearboxes that are used by some of the largest OEM companies in the world for numerous R&D and production test stand applications for automotive, aerospace and industrial components. Our high-speed gearboxes are also applicable for speed management in non-aviation, industrial applications – from turbine reduction gears to centrifugal driers, to numerous other instances where a highly specialized, powerful and reliable solution is needed. Learn more: High-Speed Gearboxes

Cotta Transmission has designed and built gearboxes for unique applications that have custom interface requirements.  Cotta’s engineering team recently designed another custom high-speed gearbox that will be used in a test stand application.  Cotta tests every transmission prior to being sent out to the customer. This speed reducer recently finished the assembly process, and is shown running in one of Cotta’s test labs.

See specifications below:

Ratio:  10.2 to 1

Input Design Rating: 200 HP at 3570 RPM

Input Max Torque:  300 FT-LB

Input Max Speed:  15,000 RPM

Approximate Weight: 1050 LB Gearbox Only, 760 LB Base Only


To contact Cotta to speak to an application specialist regarding your custom gearbox needs, you can email sales@cotta.com, or call 608-368-5600.