Over 50 years, Cotta has 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.  Cotta high-speed gearboxes are also applicable for speed management for 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.

See below for some examples of some typical applications:

  • Aircraft Generator and Alternator
  • Fuel and Aux Pump
  • CSD (Constant Speed Drive)
  • Chassis Dyno Gearboxes
  • Four Square Systems
  • Dyno Resolvers
  • Production Test Stands
  • R&D Test Facilities

Below are examples of some of the Cotta products that have been ideal for the above types of applications:

  • High-Speed Gearboxes:  SN2105, SN1995
  • Speed Reducers:  SN2169
  • Speed Increasers:  SN1659

High-Speed Gearbox for Test Stand

Learn More:  High-Speed Gearboxes

Cotta Transmission’s TR2205 three gear transfer case is being used in workover rigs, and other custom chassis where standard offerings from other manufacturers just aren’t strong enough.  What sets this gearbox apart from others is that it is designed to handle more load, and keeps going as others run out of steam.

Cotta designed the transfer case for maximum application flexibility. The T-case has mirror symmetry and provides four identical input/output stations.  Each station has a 2.75 x 10 splined shaft, and can be fitted with yokes or flanges.  A disconnect (de-clutch) can be fitted to the I/O stations to provide power interruption.  An optional line of disconnects features SAE pump pad outputs.  A special version of this model can be configured as a transfer case, drop box, PTO, or pump drive. Most options are available for field retrofit without having to return, remove, or disassemble the gearbox.


Nominal Application Power: 600 HP

Torque Capacity:

  • 2200 lb-ft continuous through gears
  • 6800 lb-ft continuous through shaft
  • 17000 lb-ft momentary through shaft

Max Speed:  2800 RPM

Ratio:  1:1 input to output

Center Distance:  17 inches input to output

Rotation: Outputs rotate same direction as input

Lubrication:  Internal reservoir. Lube pump furnished

Shifting: Disconnects are air shift. Mechanical shift option available

Output Shaft Size:  2.75 – 10 straight side spline

Common Options: SAE and ISO yokes and flanges, disconnects, pump pads, clutches, stub shaft

Weight:  Approximately 600 lbs w/o options


Over 100 years Cotta has supplied custom gearboxes to numerous markets worldwide. Cotta has over 2,000 existing product designs available.  Some of those markets in which those products are being used are the industrial, oilfield and mining markets.  See below for examples of applications in those markets:

  • Compression
  • Drilling
  • Pumping
  • Dredging
  • Process Machinery
  • Shredding
  • Crushers
  • Conveyors

Below are some of the Cotta products that have been ideal for the above types of applications:

Cotta has a team of experienced engineers and craftsmen who can take virtually any new transmission application from concept to delivery. Contact Cotta for more information at sales@cotta.com, or call 608-368-5600.

Cotta’s Pump Drives have provided years of dependable and efficient performance in the harshest, most demanding conditions. Cotta’s hardworking, high-capacity pump drives are constructed with top quality materials and precision machining to offer you the competitive edge you need to meet your most demanding pumping challenges. They provide up to 3000 HP, and include extra-wide pump spacing to ensure easy maintenance. Our engineers here at Cotta have been designing heavy-duty pump drives for many decades, so we can offer hundreds of proprietary designs to best match your power equipment requirements.

See specifications below on this pump drive engineered and manufactured by Cotta Transmission:

  • Ratio:  1.27 to 1 Reducer
  • Max Input power:  2500 HP
  • Max Input Torque:  6100 Ft – Lb

Max Power

  • Upper Pads:  1100 HP
  • SAE E PAD:  360 HP
  • SAE C PAD:  135 HP

Other Specs:

  • Max Input Speed:  2100 RPM
  • Approximate Weight:  6200 lbs
  • Approximate Oil Volume:  13 Gal.

Learn More:  Pump Drives

Cotta has 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 applications.  This gearbox is high-speed and was designed for a customer’s R&D test stand application.  The gearbox will be going through extensive testing prior to being sent out to the customer. In addition to systematically and comprehensively monitoring the quality of all internal processes, first-piece inspection is conducted on every machining sequence, and every transmission is tested prior to shipment.

Gearbox Specifications Below:

  • Ratio: 1 to 13.02
  • Max Torque:  700 Ft-Lb High-Speed Shaft
  • Max Speed:  23,000 RPM High-Speed Shaft
  • Approximate Weight:  3000 Lb

Learn More:  Cotta High-Speed Gearboxes

Learn More:  State-of-the-Art Testing Facility


Cotta offers the most dependable and versatile transfer cases available that convert your truck engine power for a wide range of onsite work capabilities. Cotta’s heavy-duty transfer cases are optimized for vocational truck, custom chassis, well drilling, oil field service, and specialty truck applications.  They provide up to 800 HP and 22,000 Lb-Ft of input torque, and offer modular concepts that help minimize your inventory and maximize application flexibility.

Cotta’s engineers have designed heavy-duty transfer cases for many decades, and can offer hundreds of proprietary designs to best match your power equipment requirements. An example of an application in which Cotta has been a go-to solution provider for transfer cases is in hi-rail trucks.  In these types of applications, the vehicles need to be able to go as fast forwards on a rail as they do backwards.  Since that is not possible with a regular truck transmission, Cotta’s forward reverse transfer case has been a great solution for companies in the hi-rail truck market.

See specifications below:

Ratio:  1:1 Forward & Reverse

Max Input Power:  450 HP

Max Input Torque:  1100 Ft-Lb

Forward Mode Yield Torque:  17000 Ft-Lb

Max Input Forward Speed:  3400 RPM

Max Input Reverse Speed:  2100 RPM

Approximate Weight:  720 Lb

Transfer Cases




Cotta Transmission’s complete product line supports a wide variety of industries and applications, where demanding performance is required under the most extreme working conditions and challenging environments.   Cotta designed and manufactured these right angle drives for a customer that uses the gearboxes in pavement grinders.  In this system, a drum hangs underneath the gearbox, and the two output shafts on the gearbox drive the grinding wheel.

See specifications below:

  • Ratio:  1.50 to 1
  • Max Input Speed:  2200 RPM
  • Design Power:  250 HP @ 2100 RPM
  • Approximate Weight:  687 Lbs

High-performance products. Collaborative team of experts. Solving problems and exceeding expectations. Contact Cotta at 608-368-5600 or email sales@cotta.com .

The Senior Buyer is a key member of the purchasing team and is responsible to, validate, communicate, and implement sourcing strategies for Cotta Transmission Company LLC. The Senior Buyer will be responsible for learning company purchasing policies and procedures, while maintaining inventory levels required for effective company operation, conducting regular price comparisons to ensure that the company is always getting the best TCO (Total Cost of Ownership) for each product purchased.

Essential Duties and Responsibilities:

  • Maintain strong working relationships with suppliers
  • Prepares and executes negotiations seeking TCO contracts and beneficial commercial agreements with suppliers
  • Issues bid requirements, selects suppliers, and places PO’s in accordance with company policies
  • Develops ideas and strategies to improve operational efficiency, add value, aid business performance, and work towards a strategy of continuous improvement
  • Monitor market trends, negotiate contracts, improve costs (and deliver agreed savings targets)
  • Review opportunities to achieve target savings utilizing negotiations and procurement best practice tools and methods
  • Develop new supplier sources
  • Reduce purchased material lead-time through active management of supply base.
  • Perform BOM pricing exercises for the sales department

Skills Required:

  • Bachelor’s Degree in Business or a related field required and a minimum of 5 years professional purchasing experience. Additional experience will be considered in lieu of degree.
  • Ability to apply common sense understanding to carry out instructions furnished in written, oral, or diagram form. Ability to solve problems involving several variables in standardized situations. Excellent communication and negotiation skills
  • Ability to calculate discounts and percentages
  • Must be able to calculate accurate cost savings for goods and services
  • Must have the ability to work in or lead cross-functional teams
  • Knowledge of MRP Systems, Internet software; Order processing systems; Microsoft Office software (Excel, PowerPoint, Access, Word)
  • Impeccable attention to detail
  • Able to thrive in a fast-paced environment
  • Travel – approximately 5% domestic and international as required

No VISA sponsorship nor Relocation Assistance available for this position.

In addition to being part of an amazing Cotta team, benefits include medical, dental and vision insurance, 401K, paid time off, health savings account, flexible spending account

Please send resumes, and any other employment inquiries, to employment@cotta.com.

Some of the most challenging aspects of a business these days is not only finding good workers, but retaining them. Long-term employees reflect a stable work environment, and can improve morale within a company. A company that has employees who have been employed for many years have good knowledge of the company’s products, services, and culture.  Many have performed various job duties, which gives them a strong knowledge base, resulting in higher productivity with fewer mistakes.

Cotta Transmission has been in business over 100 years, and has been fortunate to have had multiple generations of families work for the company. One family that falls under this category is the Powers family.  This week Cal Powers celebrated his 45th year of employment at Cotta.   Cal’s father-in-law worked at Cotta for 38 years, and had encouraged Cal to join the team back in 1977.  Cal was first hired to run drills, and later learned other operations on the floor, including mills, grinders, and is currently lead stocker.  What makes this milestone even more special is that Cal works along side his son Chris Powers, who is now in his 24th year at Cotta.  Chris started at Cotta on a split shift when he was 18 years old.  Throughout the years Chris also learned other operations, including saws, assembly, supervising position, purchasing, and most recently shipping clerk.  The three family members have worked at Cotta for a combined total of 107 years.  Chris and Cal both reflected on their time working together, and both commented that the biggest benefit has been that they get to see each other every day.  Not only has time together benefited this father son duo, but the experience that they have gained over the years has also played a key role in Cotta’s success.

Learn more about opportunities to join an amazing team at Cotta: Employment




Cotta has some more transfer cases that are in the process of being painted and will soon be ready to ship. The transfer cases are used as creep drives in guardrail trucks, and gives the ability to creep at a very low consistent speed without being affected by the speed of the engine.  This allows the auxiliary systems to utilize the required power to effectively perform the work that is needed.  The vehicle is able to drive at normal speed once the system is disengaged.

Creep Drive Specifications:

Ratio:  3:1

Max Torque: 1250 ft lbs input PTO mode, 12500 ft lbs thru mode

Approximate Weight: 390 lbs

Oil Capacity: 12 quarts

Learn More: Cotta Transfer Cases


Gearboxes Ready to be Painted