Cotta recently designed and built this new Wet Clutch Gearbox Model SR2347E for a hydraulics and tooling company in Colorado. Our Model SR2347E is a single-stage reduction gearbox designed for direct mounting to industrial engines via an SAE flange and driven in standard engine rotation (clockwise facing input shaft). This unit incorporates an idler shaft to provide output rotation same as input. The SR2347 Speed Reducer features a Cotta multi-disc wet type master clutch and is coupled to the engine via a torsional dampener. Our wet clutch option provides lower maintenance, extended clutch life, and remote actuation for ease of operation. This particular SR2347E for our customer includes Remote Monitoring capability, allowing them to view real-time performance parameters of specific gearbox functions on a customized dashboard accessed via webpage.

Model Series SR2347E Wet Clutch Gearbox Specifications:

  • Max Input Torque of 2600 lb-ft.
  • Max Input Speed of 2,200 rpm, or as otherwise limited by flywheel coupling
  • Ratio Range of 1.28 to 3.0
  • Output Shaft of 4″ diameter, 9″ long, 1″ x ½” keyway at a standard 6 o’clock position
  • Approximate Weight of 1,600 lbs.

Our SR2347E units are ideal for industrial, oilfield and mining applications up to 1,000 hp and are designed for applications where direct engine, high HP reduction gears or speed increases are needed. For more information about Cotta Wet Clutch Gearboxes, visit this page.

     

Cotta is proud to be an active member of AGMA and a Silver Sponsor of the Annual Meeting for AGMA/ABMA to be held on March 16-18, 2023 at Disney’s Grand Floridian Resort. For more information about AGMA and this event, please click here to go to their website!

 

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.

Cotta offers industry-leading Remote Monitoring capabilities for many of our gearboxes, allowing the user to view real-time performance of specific gearbox functions. A variety of parameters can be viewed on a customized dashboard accessed via webpage. Critical decisions, such as scheduling routine maintenance, can be made without onsite physical inspection of our gearbox – saving both time and money. Remote Monitoring is ideal on equipment operating at remote locations for applications like mining, oil & gas, wastewater, environmental utility, and many others. Let’s talk about how this capability may be able to fit your specific needs! Visit our Remote Monitoring Webpage for more information.

Cotta recently repaired this High-Speed Gearbox Model SN2055-2 which has been in use for over 29 years by a leading manufacturer of security and aerospace products. They have used our SN2055-2 gearbox to test production parts at their facility for almost three decades. Our Genuine Cotta Repair Service begins with a thorough inspection, cleaning and complete evaluation and then, after our diagnosis, only Genuine Cotta Parts are used as replacements during our reassembly process.

Model Series SN2055 High-Speed Gearbox Specifications:

  • Nominal Power of 600 hp
  • Max Output Speed of 30,000 rpm
  • Ratios of 1.29, 2.94, 3.18, 4.26, 6.10
  • Max Accel / Decel Rate of 2,000 rpm/sec at output
  • Approximate Weight of 825 lbs.

Model SN2055 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 keyed stub input shaft and an aerospace output pad typically AND20007. The input can be driven clockwise or counterclockwise, with the output rotating in the same direction as the input.

For more information about Cotta SN2055 and other high-speed gearboxes in our line, visit our High-Speed Gearboxes Page.

Cotta recently received four speed reducing gearboxes for repair from Lake Union Drydock Company for the USCGC Alex Haley. These gearboxes have been in continuous service for over 30 years and will be rebuilt and returned for installation on the USCGC Alex Haley (WMEC 39) that is currently used for Fisheries Law Enforcement & Search and Rescue missions. Our team was able to efficiently turn this repair around in order to get the vessel back in service for the Coast Guard.

The gearbox repair or refurbish process here at Cotta can take one third the time you would typically expect from specifying, ordering and building an all-new gearbox – saving you downtime and overall cost! Talk to our Repair & Rebuild Services department for more information or to discuss your specific needs!

                   

Cotta recently repaired this High-Speed Gearbox Model SN1939-1 which has been in use for almost 14 years by a leading aerospace manufacturer of jet engines and related components. Our SN1939-1 gearbox is used to test production parts, such as engine-related components, at their manufacturing facility. During routine preventative maintenance, our customer noticed the gearbox had about a “tablespoon of metal debris” that collected on a magnet at the bottom of the gearbox. From our inspection here at Cotta, we found one bearing wasn’t spinning freely on the high-speed shaft – which we discovered also had a small chip in the shaft. Our Genuine Cotta Repair Service begins with a thorough inspection, cleaning and complete evaluation and then, after our diagnosis, only Genuine Cotta Parts are used as replacements during our reassembly process.

Model Series SN1939 High-Speed Gearbox Specifications:

  • Nominal Power of 600 hp
  • Max Output Speed of 30,000 rpm
  • Ratio Range up to 14.40 overspeed
  • Max Accel / Decel Rate of 2,000 rpm/sec at output
  • Approximate Weight of 1,600 lbs.

Model SN1939 is a foot-mounted, two-stage increasing, two output, high-speed gearbox that is designed for test stand use. This model has a stub input shaft and two aerospace output pads typically AND20006. Both output pads have the same direction of rotation and the same ratio. There is a special design option to have a different ratio on each output. Contact Cotta engineering for information on per head power capability. For more information about Cotta SN1939 and other high-speed gearboxes in our line, visit our High-Speed Gearboxes Page.

       

Cotta Model GR16E 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 same as input. Our speed reducers match the optimum engine speed to the optimum driven equipment speed, allowing your engine and load to both operate at ideal efficiency.

Typical uses include pumps, dredges, compressors, crushers, drills and high-performance machinery for oil & gas, construction, mining, and other industrial applications. Our heavy-duty gearboxes are designed for use with diesel engines, electric motors, PTO’s, and other prime movers. This particular unit here is a replacement GR16E401-1 Speed Reducer which will be used in the forestry market on a Morbark Tub Grinder in New Hampshire to chip limbs and branches. Cotta has supplied replacement gearbox units as well as service parts for many years for Morbark Tub Grinders worldwide.

Model GR16E Speed Reducer Specifications:

  • Max Input Torque of 1650 lb-ft.
  • Max Input Speed of 2200 RPM or as otherwise limited by input clutch or coupling
  • Ratio Range of 1.50 to 3.0
  • Integral foot mounts and integral lube pump supplied
  • Approximate weight of 1,500 lbs.

For more information about Cotta GR16E and our other speed reducers, visit the Speed Reducers 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’s high-speed gearboxes are built to provide many years of service, which is a reason why some of the largest OEM companies in the world have come to Cotta for custom built gearbox solutions.  In addition to designing high-speed gearboxes for speed management in non-aviation and industrial applications, where highly-specialized, powerful and reliable solutions are needed, Cotta has also designed numerous gearboxes for R&D and production test stand applications for automotive, aerospace, and industrial components.

Cotta’s engineering team designed this high-speed gearbox that will be used in a test stand for an aerospace application.  After the assembly process is completed, additional quality checks will be made on the gearbox as it goes through testing in Cotta’s high-speed programmable test cell.  See gearbox specifications below:

Ratios:  

  • 1 to 8.436 overspeed low speed pad (20,000 RPM Max)
  • 1 to 12.79 Overspeed high speed pad (30,000 RPM Max)

Max Accel/Decel Low Speed Pad:   2933 RPM/SEC

Max Accel/Decel High Speed Pad:  4400 RPM/SEC

Total Inertia:  132.876 LB-IN-SEC ^2 Referred to Input Shaft

Approximate Weight:  2100 LB