Centrifugal pumps are most commonly used for pumping low viscosity fluids, such as water, solvents, oils, acids, organics etc.  Cotta’s engineering team designed and manufactured this reduction gearbox that will be used in a large centrifugal pump. First-piece inspection was conducted on every machining sequence, starting at the source to support our zero-defect policy.  After assembly, and testing of the gearbox in Cotta’s state-of-the-art testing facility, the unit was painted in Cotta’s inhouse paint booth, packed, then shipped out to the customer.

See Gearbox Specifications Below:

Ratio:  1.59 to 1

Engine Rotation

Max Input RPM:  2200

Max Input Torque:  2600 FT-LB

Approximate Weight;  1350 LB

Cotta’s team works with customers to design the best possible gearbox that your product or situation requires.  Contact Cotta to discuss your application’s needs. See links below:

Speed Reducers


Application Design Data Interactive Form


A customer of Cotta’s has has been using this creep drive design for over 10 years.  These units shown in the picture are getting close to shipment and will be used in a guardrail truck application.  The creep drive allows the vehicle to creep along at very low consistent speeds, regardless of the engine speed.  This in turn allows the auxiliary systems to utilize the power needed to perform the work needed effectively.  The vehicle is then able to drive at a normal speed once the system is disengaged.


  • Ratio 3 : 1
  • Max Torque: 1250 ft lbs input PTO mode, 12500 ft lbs thru mode
  • Approximate Weight: 390 lbs
  • Oil Capacity: 12 quarts

Cotta has a creep drive model #Tr2273, which is a creep drive gearbox designed to provide precision vehicle speed control by using a hydraulic motor to rotate the vehicle drive shaft.  To learn more, click on Creep Drive.

For information regarding your gearbox needs: 

Contact Us

Application Design Interactive Form


For decades Cotta has been a leader in the design and manufacturing of high-capacity pump drives.  As with all Cotta products, the pump drives provide years of dependable and efficient performance in the harshest most demanding conditions.  To help make the process of finding the best solution for your power equipment requirements, Cotta’s website helps users to quickly find specifications on some of Cotta’s most popular pump drives.

Cotta’s Heavy Duty Pump Drive Catalog reflects products which are tabulated in descending order by input HP.  You may make a selection by input power, then refer to the individual spec sheet to determine if the power division between outputs is suitable for your specific application.  To start the process of a custom engineered solution, users can also contact Cotta for assistance with their pump drive selection, or use Cotta’s interactive Application Design Data form by clicking here.

Cotta’s Pump Drives Offer:

  • A standard case that is cast iron for strength and rigidity. For custom designs, stress relieved steel fabrications are used
  • A through shaft can be provided. Add optional disconnect for intermittent drive requirements
  • Lube pump, heat exchanger, and lube distribution circuit is provided
  • SAE housings from 00 (shown in picture) to 1 for minimum installation space. Delete housing for remote mounting
  • Various flywheel couplings including over center clutches, torsional couplings, drive plates, and air clutches
  • Interchangeable pump pads from SAE B to F can be used on any station. DIN spec pads available. Field configurable


Cotta’s Model SN1649 is a foot mounted single increasing stage, high-speed gearbox designed for test stand use.  The gearbox is compact, making it suitable for enclosure into utilized test stands. The model has a stub input shaft and typically has an aerospace accessory drive pad output.  The gearbox can be modified for operation up to 50,000 rpm output speed.


Power:  300 HP

Output Speed:

  • 30,000 RPM Typical
  • 50,000 RPM with modifications

Ratios:  2.00, 2.58, 3.00, 4.00, 5.44. Contact Cotta for other available ratios

Max Accell/Decel Rate:  200 rpm/sec at output. For high rates contact Cotta

Input Configuration:  Keyed stub shaft is standard. Contact Cotta for optional inputs

Output Configuration:  AND20002 pad is typical. Shafts and various other pads available

Rotation:  Input can be driven ccw or cw.  Output rotates opposite to input

Lubrication:  Positive delivery.  Pump, heat exchanger, and necessary temp and pressure controls are furnished

Options:  Accelerometers, speed pickup, and other application specific items can be accommodated or supplied

Approximate Weight:  200 lbs

Standard Finish:  2-part polyurethane enamel

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.  Contact Cotta for for your high-speed gearbox needs.




Cotta Transmission has been a leading force in transmission gearboxes for over a century. Cotta products are are known for their durability, often operating in extremely harsh conditions.   If a gearbox happens to overheat, outside factors are most likely the cause.   Some of those factors include the operating and ambient temperatures, lubricant viscosity index, as well as load conditions.  However, the most frequent cause for gearboxes to overheat is the oil level.  Too little oil may result in reduced delivery, or no delivery to moving parts, which can cause high friction and heat. Conversely, too much oil increases agitation by gears, bearings, and other moving parts which can generate unwanted heat.  The inclination to add more oil than necessary, or “just in case”, should be avoided.

Oil level concerns are addressed with all Cotta products by experimenting with the levels at the Cotta factory. If there are special operating circumstances such as pitch or roll, or a jerky motion that can cause the oil level to change on your Cotta gearbox, contact our Engineering team to discuss the best way to re-locate the oil level.  Call 608-368-5600 or email sales@cotta.com .

Cotta recently completed the painting process on this pump drive, which will be used in a rope shovel application. Cotta’s customer has been purchasing the pump drives for over 10 years. The units, as with all Cotta transmission gearboxes, have proven to be one of the most reliable, durable, and powerful products available in our industry. Cotta takes great pride and care in designing a gearbox…your gearbox. We work together to discover your specific needs, or uncover the power issues causing problems, and drive ourselves hard to design the best possible high-speed transmission gearbox, speed increaser, or reducer, pump drive, or product your situation requires.



Cotta Transmission recently wrapped up their yearly workplace campaign benefiting United Way Blackhawk Region.  Employees participated in the raffle drawings, food sales, a chili cookoff, a free-throw contest and more.  Donations for this year’s campaign came in just shy of $4000.

United way works to identify every donor and dollar possible to move the needle on touch-to-solve issues, the region’s most daunting social ills including poverty, hunger, homelessness, family violence, and more.  The United Way Blackhawk Region helps to build a stronger Rock County/Stateline, and fights for the healthy, education, and financial stability of every person, in every community.

United Way Campaign

Cotta is proud to be a “Champion for Change”.   Learn more:  United Way Blackhawk Region


Cotta’s Model GR1600E is a single-stage reduction gearbox designed for direct mounting to industrial engines via an SAE flange and driven in standard engine rotation (CW facing input shaft).  This unit incorporates an idler shaft to provide output rotation the same as the input rotation.  Tabulated below are nominal power and speed capacity, together with standard options.

Output Rotation:  Same as input

Max Input Torque:  2600 lb-ft

Max Input Speed:  2200 RPM, or as otherwise limited by input clutch or coupling

Ratio Range:  1.28 to 3.0

Output Shaft Size:  4.000″ dia., 9″ long, 1″ x 1/2″ keyway

Output Shaft Location:  6 o’clock std, 12, 3, and 9 o’clock optional

SAE Housings:  #00, #0, #1/2, #1

Flywheel Couplings:  Various clutches, couplings, and drive plates through SAE 24″

Rear Support:  Integral foot mounts provided

Lubrication:  Integral lube pump supplied

Cooling:  Oil/water shell-and-tube cooler furnished if required. Various options.

Side Load Capable:  Yes.  Contact Cotta for specs and limits

Approximate Weight:  1500 lbs.

Additional Information:

  • Flywheel coupling selection requires Cotta technical review and approval
  • Some speed reducers output shafts are suitable for chain or belt side pull drives, while others are not. Complete application details are required for Cotta to make recommendations and approval.
  • Weight listed is an average. Actual weight can vary substantially with options such as SAE housing size and flywheel coupling choices.

Contact Cotta to discuss other options or specialized requirements, by emailing sales@cotta.com , or calling 608-368-5600.