This 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.
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In 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 also a variety of finishes: aluminum, anodized aluminum and stainless steel, making them suitable for food processing and packaging applications.
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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.
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Mach III’s catalog model NEMA Frame clutches have a female input bore and male output shaft and are designed for coupling motors and gearboxes. But what do you do when you need to couple two components with output shafts, one metric and one imperial? Insert a custom designed Mach III clutch with NEMA housing that has a female input on both sides.
Specifications for Product No. C3C2R-002:
Torque Rating = 573 lb.in. @ 80 PSI
NEMA Frame Size = 143T/145T
Input Bore = 0.875 Inch with Standard Keyway
Output Bore = 32mm with Standard Keyway
View the Spec Sheet
Mach III’s custom designs can accommodate a variety of torque and special mounting requirements. Click below to see other examples:
Imperial to Metric Servo Brake
Torque Limiter with Off-Center Mounting Flanges
Mach 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 to 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.
A manufacturer of plastic thermoforming machinery needed a replacement for a troublesome caliper brake but no manufacturer offered a servo brake that would match the 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.