Cotta Transmission is currently in the process of assembling top mast drive gearboxes for a rotary drill mining application.  The rotary drills are built for long life, and are equipped to perform in extremely harsh conditions.  Cotta’s gearboxes have stood up to the application’s requirements for over 10 years now, and continue to play an integral role in their success.


  • Ratio: 16.04 to 1
  • Max Input Speed: 1800 RPM
  • Max Output Torque: 12000 ft lb
  • Max Thrust Load: 80000 Either Direction
  • Approximate Weight: 1600 lbs (726 kg)

Cotta specializes in providing customers with engineered gearbox solutions. The Cotta team continues to exceed customers’ expectations with the most reliable, durable, and powerful products available in our industry. To speak to an Application Engineer regarding any gearbox needs, call 608-368- 5600 or email


Application Design Data Form


Parts keep flowing through the shop as we head into the weekend.  Cotta’s engineering team has been busy with many new development projects from industrial type applications, oil and gas, high speed applications and more. Cotta Transmission gearboxes are crafted and matched to meet the specific needs of the customer, and are one of the most reliable, durable and powerful products available in our industry.

Cotta’s engineering team takes great pride in designing custom gearboxes. The team works with customers to discover their specific needs, or uncover the power issues causing problems, to design the best possible high-speed transmission gearbox, speed increaser or reducer, pump drive, or product the situation requires.

If you have an application that requires a custom gearbox design, click on the link below, or email, or call 608-368-5600.

Application Design Data Interactive Form


Cotta celebrated Cinco de Mayo with a cookout for their employees today. Thank you to Cotta’s Human Resources Manager, Kelly Garcia, for making all of the arrangements!