Custom Design Solutions: Food Safe Torque Limiter

clock March 18, 2019 10:18 by author Mach III Clutch

T4B2H-003_1This slip clutch was developed for an application where sheets of beef jerky are pulled through processing machinery by a studded wheel. Problems arose if any of the wheels became jammed. The resulting torque spikes were damaging other machine components. Click Here To Read More

See More Solutions For Food Packaging and Processing

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Torque Limiter Allows Fish Barrier To Lower Automatically

clock February 22, 2019 12:41 by author Mach III Clutch

coho-salmonThis torque limiter is part of a hoist system that raises and lowers large barrier grates that allow the flow of water from a drainage waterway adjacent to the Sacramento River, but prevent spawning salmon from swimming in. A torque limiter was needed to provide a means of slipping the hoist system  – effectively lowering the grates automatically when an excess of force is caused by the build-up of debris preventing damage to the weir structure and equipment. 

Unique challenges of this application were addressed through custom design:

  • Installation between SEW compact helical gear box and SAF77 gearbox
    The torque limiter housing has non-standard B5 input and output along with anT8C3K-001 integral adapter.
  • The unit must support a 255 pound overhung load. 
    The housing was specially designed to provide the required support of the SAF77 gearbox and Rototork actuator.
  • 24/7/365 outdoor exposure
    The housing provides complete enclosure of the internal components.
  • The slip torque setting needs to be adjustable onsite.
    Two ports covered by sealed, removable panels allow access to the adjustment nuts. After loosening a jam nut with an open end wrench, the adjustment nuts can be rotated to increase or decrease compression of a disc spring which raises or lowers the slip torque setting. The torque limiter remains in place throughout the process.

To view the spec sheet for this torque limiter, Click Here.


One of 6 hoist systems, including the torque limiter, in place atop the Wallace Weir.

Wash Down Clutch With a Lead Time That Saved The Day

clock February 11, 2016 06:35 by author Mach III Clutch

C5A3K-001A food processing equipment manufacturer received an unexpected and unpleasant piece of news when they tried to purchase the nickel plated jaw tooth clutch they had designed into a new machine, a 16 week lead time!  Needing a 5 week lead time to meet the delivery date required by their customer, the manufacturer contacted us.  Did Mach III have a clutch that was equivalent?  Could we deliver in 5 weeks?  After reviewing the application and coordinating with production, our engineering team said, "Yes."

Our designers even found a way to expedite installation by incorporating an adapter so the clutch could be directly connected to the Lovejoy L150 elastomeric spider coupling used in the machine design.

The base for this design is the C5A2K-STH catalog model. For corrosion resistance, the unit is sealed and all exposed components are made from stainless steel and aluminum. This clutch is a prime example of the quick customization available from Mach III.  

View The Spec Sheet 

Servo Motor Brake Holds When Power Is Off

clock November 10, 2015 20:30 by author Mach III Clutch

Servo Motor BrakeThis spring engaged, air released friction brake was designed at the request of a thermoforming machinery manufacturer in Taiwan who needed to assure that a forming platen is held stationary in the absence of air pressure.  Communicating by email across 7,800 miles and 12 time zones, Mach III’s engineers were able to obtain all the details about the application as well as the dimensions of the servo motor and gearbox the brake would go between.

Within a couple of days a design and quotation were presented for this holding brake which has 2,409 pound inches of torque.  The brake connects directly to a Yaskawa SGMGV-IE 15kw servo motor on the input side and a Lenze GKS-11 3W gearbox on the output side.  

Click Here to view the spec sheet.

Holding Brake Connects Directly To Rotary Actuator

clock June 29, 2015 17:59 by author Mach III Clutch

Mach III Holding BrakeLike many of Mach III’s custom designs, this brake design began with an inquiry about a catalog model spring engaged brake.  An engineer working on a drive system needed a holding brake to prevent a Rexroth RAK-8D  actuator from being back driven and losing position if air pressure was lost. The connection to the actuator was a 19mm square rather than a typical round shaft and key and since the system would be on an offshore oil drilling platform, the brake had to be enclosed.

While it was possible to enclose the D4F3R-STH brake the engineer had inquired about and produce it with a square input, he would have to make changes to his design to connect the brake to the motor. Instead, Mach III engineers presented the concept of this enclosed spring engaged, air released brake with a flange containing six through holes on an 80mm bolt circle to connect directly to the actuator. The brake has 500 pound inches of torque and requires 77 PSI to release.  The time span between the initial inquiry and the quotation for the custom design was just 4 days. The lead time to produce this
completely custom brake solution was only 3 short weeks.

Click here to view the spec sheet.

IEC Flange Clutches, Brakes & Torque Limiters

clock April 10, 2015 02:35 by author Mach III Clutch

X5C2R-004_highres_outlinedIn addition NEMA Frame mounted models, Mach III also produces clutches, brakes, clutch-brake combinations and torque limiters to IEC Flange standards.  The model pictured is a combination air applied clutch – spring applied brake.

  • Part Number:  X5C2R-004
  • IEC 100 Frame, B5 Flange
  • 28mm Input Bore and Output Shaft
  • Clutch Torque:  495 lb-in @ 80 PSI
  • Brake Torque:  197 lb-in, 20-30 PSI Release

NEMA and IEC models are available in a variety of finishes:  aluminum, anodized aluminum and stainless steel, making them suitable for food processing and packaging applications.  

Click here to see the spec sheet.

Food and Beverage Handling Solutions

clock April 5, 2015 07:13 by author Mach III Clutch

MachIII_Food_Pkg_ProdMach III has solutions for connecting, disconnecting, stopping, holding, tension control and overload protection in food and beverage processing and packaging environments.  We are experienced in adapting our clutch, brake and torque limiter designs with covers, seals and food safe components and lubricants.  Finishes are available in stainless, electroless nickel plated steel and anodized aluminum.  Learn more about some of the units we have produced for food and beverage handling applications.  

213TC to 182TC NEMA Frame Brake

clock July 25, 2014 03:24 by author Mach III Clutch

What makes this Mach III brake custom?  Not much, really.  It is basically a catalog model D5C3R-21H spring applied brake with an output shaft diameter of 1.125 Inch instead of 1.375.  A minor change, but when the brake must be mounted between a 213TC NEMA frame motor and a 182TC NEMA frame gear box it is a major difference.  No longer does the client have to purchase a brake, disassemble it, turn down the output shaft and put it back together.  This Mach III brake is out of the box and on the machine with a lead time of only 3 weeks.

View the Spec Sheet

Heavy Duty End of Shaft Clutch With Integral Pulley

clock March 25, 2014 10:23 by author Mach III Clutch

x-defaultThis air actuated friction clutch is a customized version of the Mach III C6D3K-STH.

  • 7,405 lb.-in. Torque @ 80 PSI
  • 2.125 Inch Bore with Standard Keyway
  • Integral 6-5V Groove Pulley
  • 0.25” NPT Rotary Air Union
  • Enclosed Construction

View Spec Sheet

High Torque Holding Brake Fits Within Diameter Restriction

clock November 1, 2013 07:05 by author Mach III Clutch

D6F4G-003_x500The application for this spring actuated holding brake required a minimum 3,300 lb-in torque capacity.  Our engineers first recommended the Mach III catalog D8F3K-STH,  however, the machine design could not accommodate the 11.75 inch flange diameter of this standard model.

To accomodate the radial space constriction, Mach III used the D6F3G-STH brake as a base and incorporated additional friction surfaces. The result was a brake with 4,405 pound inches of holding torque within a 9.53 inch diameter. 

View The Spec Sheet

Clutch-Brakes for Harsh Environments: Mach III Has It Covered

clock October 5, 2013 07:45 by author Mach III Clutch

W4A2H-STH_W4A2H-004Mach III frequently adapts catalog products to meet the individual needs of the application.  In this example the customer required a combination clutch-brake that would drive a pilot mounted sprocket when engaged and hold it stationary when disengaged.  However, the environment in which the clutch-brake would operate was dusty and there was a potential for particulates to enter the clutch-brake where they could cause premature wear or failure. 

Mach III adapted the cylinder portion of a catalog model W4A2H-STH clutch-brake by expanding the outer diameter and elongating it to form a cover.  Both the catalog model and modified design are shown on the right. 

This or a similar solution can also be used in clutch, brake and torque limiter designs.

End of Shaft Mount Clutches With Integral V-Belt Pulleys

clock May 28, 2013 02:38 by author Mach III Clutch

Mach III Sheave ClutchesMach III offers all-in-one, easy to install solutions to your clutch needs. One example is our ability to adapt our heavy duty end of shaft mount air engaged friction clutches to accommodate the exact v-belt pulley required by our customers. Clockwise from top left:

  • (4) 5V Groove Pulley
  • (6) 5V Groove Pulley
  • (4) 3V Groove Pulley
  • (2) B Groove Pulley

Connect with Mach III engineering to discuss your application.  

Sealed Clutch With Output Flange For Heavy Wash Down

clock March 11, 2013 14:58 by author Mach III Clutch

A pair of these clutches drive vertically mounted brushes which scrub the sides of a vehicle in an automatic car wash. This clutch had to fill two requirements: (1) operate in an environment where exposure to both water and detergent is constant and (2) support the brush assembly. Mach III Sealed Clutch with Custom Output Flange Below are the special features incorporated into this design:

  • Enclosed, sealed aluminum housing
  • Grease packed under top oil seal and inside the flange housing to prevent water seepage
  • Port in housing for vent tube.  Ventilation prevents the clutch from acting as a pump and drawing water into itself during disengagement.
  • Custom output flange

View Spec Sheet

Covered Tension Brake Is Protected From Overspray

clock November 21, 2012 00:25 by author Mach III Clutch

Mach III developed this covered brake, a variation of our SensiFlex® tension control brake, to provide light tension on Mylar film during a coating process. There was a potential for overspray to occur so the brake had to be protected. The brake is pictured both with and without the cover. 

  • 82 Pound Inches Torque @ 80 PSI
  • 5.13 Inch Outside Diameter
  • 2.75 Inch Length
  • 1.125 Inch Bore with Standard Keyway
    • Aluminum Housing 

Mach III makes a variety of covered clutches, brakes and torque limiters. Click below to see examples:

covered, food-safe combination clutch-brake

covered, food-safe torque limiter



Custom Design Solutions: Special C-Face Mounting

clock June 8, 2012 11:57 by author Mach III Clutch

C3C2P-001Mach III designs and manufactures clutches, brakes and torque limiters in custom c-face configurations.  In this example, the customer needed a device to limit the torque between the motor and a coupling which was used to fasten a cap.  The customer required the torque setting to be adjustable.

Mach III suggested an air engaged clutch.  The customer would be able to adjust the torque applied to the capper coupling by increasing or decreasing the air pressure supplied C3C2P-001 001to the clutch.  When the capper met resistance, the clutch would slip.

Unique in this application was the motor face which required that the clutch mounting flanges be off-center from the clutch housing.  The motor and capper coupling were sent to Mach III so the dimensions could be verified.  The second photograph shows the finished clutch in place between the motor and capper coupling.

Custom Design Solutions: Pilot Mounted Sheaves

clock June 4, 2012 12:33 by author Mach III Clutch

Friction clutches from Mach III Clutch, Inc. can be shipped complete with a pilot mounted sheave. In some cases, the sheave is manufactured by Mach III and fitted onto a catalog unit. In other cases, the length or diameter of the sheave may require modification of the unit to provide the proper support. Below are examples of each.C8D3K-STH--C8A2K-STH-P025-003_thumb2


The customer who purchased this C8D3K-STH heavy duty, end of shaft mounted friction clutch required a 15 Inch O.D. 3-5V groove sheave on the pilot. Mach III manufactured both the clutch and sheave and shipped the complete assembly within four weeks.




The customer who purchased this unit needed something similar to the catalog model C6D3K-STH, but with a 7.0 Inch diameter, 4-5V groove sheave which was too long and too small a diameter to fit on the pilot of the standard model. Mach III modified the catalog design by lengthening the unit and making the sheave an integral component mounted on bearings directly on the drive hub.


In addition to providing the required sheave, Mach III offers every catalog product with a range of bore and keyway sizes so customers are not required to modify their shaft or use bushings to obtain the correct fit. Also shipped with a rotary air fitting, these clutches are both out-of-the-box ready for quick installation.

Contact our engineering department to discuss your pulley, sprocket or sheave requirements. Click Here for contact links.

Food Safe Combination Air Set Clutch - Air Set Brake

clock August 17, 2010 17:35 by author Mach III Clutch

A manufacturer of food packaging equipment contacted Mach III looking for a combination clutch brake which would stop and start a pinch roll shaft with constant input from an attached pulley. The clutch/brake had to meet the following special requirements:Food Safe Clutch Brake

  • covered & made of food-safe materials
  • end of shaft, flange mounting
  • capable of handling the pulley belt load on the unsupported end

The unit Mach III designed and manufactured was built from anodized aluminum, stainless steel and electroless nickel plated parts and food grade grease. To support the overhung belt load special bearings are used between the housing and drive hub. The clutch brake is attached to the machine frame using the tapped holes in the end plate. This combination air set clutch/air set brake is rated at 286 lb-in clutch and 143 lb-in brake at 80 PSI and is only 4-1/4” in diameter.

Mach III’s engineering department is available for assistance with selection of products for special environments.  

Custom Design Solutions: Metric To Imperial Servo Motor Brake

clock June 8, 2010 15:38 by author Mach III Clutch

A manufacturer of plastic thermoforming machinery needed a replacement for a troublesome caliper brake but no manufacturer offered a servo brake that would match D8C2K-001 004the Japanese built servo drive (metric) and a U.S. made gear reducer (imperial).  Mach III saved the OEM the expense of modifying the machine design by creating a c-face, spring applied brake to fit between the two components.  This example has a 55 mm input bore and a 1.625 Inch output shaft.  Torque rating:  6400 pound inches, 58 PSI release.

Contact our engineering department to start working on a custom design solution for your application. Click Here for contact links.

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