Tag Archive for: Speed Increasing Gearbox

Cotta’s long tradition of manufacturing the highest quality gearboxes, Made in the USA for over 100 years, is exemplified in our extensive line of speed increasers and reducers. Our engine-mounted speed increasers raise the engine speed to the driven equipment speed, allowing your engine and load to both operate at optimal efficiency.  These particular gearboxes are shown in assembly, and will be used in a large centrifugal blower application.  The customer has been purchasing these gearboxes from Cotta for over 10 years.


  • Ratio: 1 : 2.036
  • Max Input Torque: 625 ft – lb
  • Max Output Speed:  4850 RPM
  • Approximate Weight:  350 lbs
  • Oil Type:  AGW: ISO VG V6 Synthetic

Typical Speed Increaser Applications:

  • Pumps
  • Dredges
  • Compressors
  • Crushers
  • Drills
  • High-Performance Machinery for Oil & Gas
  • Construction
  • Mining
  • Other Industrial Applications

Cotta speed increasers require rear supports and are designed to be driven clockwise facing the input shaft. Before recommending a speed reducer, Cotta’s engineering team needs to know your input speed, idea output speed, flywheel housing size, flywheel connection requirement, direction of rotation, and type of driven equipment.  If one of our pre-designed units does not fit your needs, then our engineering team will create a custom solution specifically for you. Cotta engineers have experience designing specialized speed increasers for satisfying a variety of requirements and options.

View some of Cotta’s more popular speed increaser models: Learn More

Cotta is in the process of assembling speed increasing gearboxes that will be used to run 2 and 3 stage centrifugal fans in sewer cleaning equipment.  Cotta has been a long time supplier to one of the leading manufacturers of sewer cleaning equipment worldwide.   Cotta is driven to design the best possible gearbox for each and every customer, and this robust gearbox is just another example of why customers turn to Cotta for a reliable and durable gearbox solutions.


Ratio:  1:23.0

Max Input Torque:  625 FT LB

Approximate Weight:  375 Lbs

LEARN MORE:  Cotta Speed Increasers