There are controlling documents that govern most of the aspects of gear and gearbox design. The American Gear Manufacturer’s Association (AGMA) documents define gear tooth quality, gear rating, gear materials, gearbox component design (i.e., shafting, keys, splines, etc.) and many other topics. If your product is not rated to these standards, it may not be equivalent to Cotta product!
Cotta bearing kits are a combination of two bearings and two spacers that are paired together and match-ground to produce the desired end play. This means that one element cannot be replaced individually. The entire bearing kit must be replaced or re-ground to original specifications.
Cotta recently designed this new High-Speed Gearbox Model SN2231-2 for component testing use by a leading U.S. aviation and aerospace product manufacturer. Our Model SN2231-2 is a foot-mounted, dual output, high-speed gearbox that is built for test stand use. This unit is designed for bi-rotational rotation.
Model Series SN2231-2 High-Speed Gearbox Specifications:
Continuous Rating of 400 hp at 7,200 to 16,000 rpm
Max Output Speed of 18,000 rpm
Ratios of 1 to 2.518 Overspeed
Continuous Output Torque of 300 ft-lb.
Max Instantaneous Output Torque of 500 ft-lb.
Max Accel / Decel Rate of 2,000 rpm/sec at Output
Approximate Weight of 1,200 lbs.
Lubricant AGMA #1 or Equivalent
For more information about Cotta SN2231-2 and other high-speed gearboxes in our line, please visit our High Speed Gearboxes page.
https://cotta.com/wp-content/uploads/Cotta-SN2231-2.jpg15122016fortytwo eightynine/wp-content/uploads/2018/04/cotta_transmission-llc-logo.pngfortytwo eightynine2023-02-09 09:26:582023-02-09 09:26:58High-Speed Gearbox Model SN2231-2
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.
https://cotta.com/wp-content/uploads/Guardian-SR2347_3.jpg640480fortytwo eightynine/wp-content/uploads/2018/04/cotta_transmission-llc-logo.pngfortytwo eightynine2023-01-06 11:40:012023-01-06 11:40:01New Wet Clutch Gearbox Model SR2347E
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.
https://cotta.com/wp-content/uploads/COTTA-SN2055-2-High-Speed-Gearbox.jpg1008756fortytwo eightynine/wp-content/uploads/2018/04/cotta_transmission-llc-logo.pngfortytwo eightynine2022-12-09 11:07:062022-12-09 11:08:56Testing Parts for 3 Decades with Our High-Speed Gearbox
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!
https://cotta.com/wp-content/uploads/ALEX_HALEY_ON_PATROL_FOR_RELEASE_2898959553.jpg14622100fortytwo eightynine/wp-content/uploads/2018/04/cotta_transmission-llc-logo.pngfortytwo eightynine2022-12-01 13:37:092022-12-01 13:38:54Speed Reducers over 30 Years on USCGC Alex Haley
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.
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