Over the last 50 years, Tsubaki engineers have spent thousands of man hours designing and improving uni-directional/ mechanical clutches in an effort to improve reliability and performance. Evolution of the uni-directional clutch started with simple prop and ratchet type designs, and has progressed to the roller ramp and non-contact sensing cam type commonly used today. Innovative designs and features incorporated into our cam clutch products assure efficient and dependable operation in the harshest environments. Tsubaki Cam Clutch Solutions
Ratchet Design
Roller Ramp Design
Tsubaki Sprag Design
Typical Applications
Air Cleaning Plants Agricultural Machines Bucket Elevators Compressors Conveyors Cranes and Hoists Dry Cleaning Machinery Duplicator Equipment Fish Net Machines
Heat-treatment Furnaces Induced Draft Fans Multi-state Conveyors Packaging Machinery Printing Machinery Pumps Punch Presses and Feeders Power Plants
Refinery Equipment Speed Reducers Standby Power Units Textile Looms Two-speed Grinders Two-speed Shiftovers Washing Machines Wire Winding Machines
Indexing, Overrunn
Backstop Cam Clutch Products
BS
BS-F
BSEU
MZEU
BS Series is designed for lower speed conveyor applications. The unique non-rollover cam design provides higher torque capacity, assuring full engagement. Bore Range: 0.750” to 5.315” (20 to 135 mm) Torque Range: 217 to 11,580 lbs. ft.
BS-F Series is designed for simple, drop-in installations to all major competitive backstop products. Uses unique seal design for maximum life, minimal maintenance. Bore Range: 2.360” to 18.310” (60 to 465 mm) Torque Range: 4,980 to 722,000 lbs. ft. Competitor Models: Morse CB Falk NRT Marland MA Formsprag LLH
BSEU Cam Clutches are a European variation popular on many bucket elevators in North and South America. Bore Range: 0.787” to 3.543” (20 to 90 mm) Torque Range: 159 to 3,467 lbs. ft.
MZEU Series is designed for overruning applications. These units come pre-lubricated, and can be adapted with flanges and torque arms to suit a wide variety of applications. Bore Range: 0.472” to 5.906” (12 to 150 mm) Torque Range: 44 to 24,930 lbs. ft.
Competitor Models: Formsprag LLH Falk NRTH Ringspann FRH
Competitor Models: Formsprag GFR/GFRN Stieber GFR
Competitor Models: Formsprag RSBW
Morse CR/BW Stieber RSBW
BREU
BR-HT
CA
TFS
BREU Series is designed for backstop applications where bearing support and modular construction is desirable. Bore Range: 1.181” to 5.906” (30 to 150 mm) Torque Range: 447 to 25,009 lbs. ft.
BR-HT Series is designed for backstop applications where high-speed overrunning is required. Lift off cam design assures minimal heat generation and longest life. Bore Range: 0.787” to 5.118” (20 to 320 mm) Torque Range: 77 to 269,950 lbs. ft.
TFS Series has two vertical keyways on the outer race to assist with positioning. Outside dimensions are the same as series 63 ball bearings. Ideal for general overrunning applications. Bore Range: 0.472” to 3.150” (12 to 80 mm) Torque Range: 13 to 2,894 lbs. ft.
CA line of backstops are an integral part of the reducer. The unique non-rollover cam design is key and prevents damage to the gears, shafts and drive train. This is a drop-in replacement for Dodge® reducers. Bore Range: 0.738” to 1.750” (18.75 to 44.45 mm) Torque Range: 45 to 901 lbs. ft.
Competitor Models: Formsprag RIZ Stieber RIZ
Competitor Models: Formsprag RSCI Ringspann FXM
Competitor Models: Dodge 24 Series
Competitor Models: Formsprag ASNU Morse NFS Ringspann FC/FDN
ning and General Cam Clutch Products
MIUS
MZ
BB
TSS
MIUS Series is for mid-speed indexing applications up to 300 cycles a minute. Bore Range: 0.500” to 6.250” (12.7 to 160 mm) Torque Range: 280 to 27,290 lbs. ft.
MZ Series is designed for overrunning applications. These units come pre-lubricated for easy installation and long service life. Bore Range: 0.591” to 2.756” (15 to 70 mm) Torque Range: 137 to 2,242 lbs. ft.
BB Series has the bearing dimensions and characteristics of a 62 Series type ball bearing. This design provides easy installation and is ideal for general overrunning applications. Bore Range: 0.590” to 1.575” (15 to 40 mm) Torque Range: 21 to 192 lbs. ft.
TSS Series is designed for press fit installation. Outside dimensions are the same as series 62 ball bearings. Bore Range: 0.314” to 2.362” (8 to 60 mm) Torque Range: 4 to 479 lbs. ft.
Competitor Models: Formsprag AS Morse NSS Ringspann FCN
Competitor Models: Formsprag CSK Morse KK Ringspann ZZ Stieber KK
Competitor Models: Formsprag HPI Morse MI Marland RMS
Competitor Models: Stieber SMZ
MGUS/MGUS-R
BUS200
PBUS
OB-ON/OF & OB-SF
MGUS is suitable for applications which require low to high speed overrunning. MGUS-R series contains a built in oil reservoir and can be used for backstop applications. Bore Range: 0.500” to 6.250” (12.7 to 160 mm) Torque Range: 280 to 27,290 lbs. ft.
BUS Series is specifically designed for shaft mounting applications that require high speed inner race overunnning or low to mid speed outer race overrunning. Bore Range: 0.650” to 3.122” (16.5 to 79.3 mm) Torque Range: 39 to 1,025 lbs. ft.
PBUS Series clutch is packed with a special grease for general applications. The outer race has provisions for mounting gears, pulleys, and sprockets. Bore Range: 0.375” to 1.750” (10 to 45 mm) Torque Range: 41 to 1,623 lbs. ft.
OB-OB/OF Series is an enclosed unit housing cam clutch units and a common shaft. These units are used for high speed overrunning applications. OB-SF Series is an enclosed unit housing cam clutch units that allow for continuous high speed overrunning and engagement and high torque capacities. OB-ON/OF Torque Range: 231 to 4,337 lbs. ft. OB-SF Torque Range: 2,318 to 59,270 lbs. ft.
Competitor Models: Formsprag FS50 Morse B200 Renold SD
Competitor Models: Formsprag FSR Morse PB-A Renold SB
Competitor Models: Formsprag FSO Morse MG Ringspann FB
Tsubaki Cam Clutch Products are designed to transmit torque in one direction of rotation and overrun (freewheel) in the opposite direction of rotation. All Tsubaki cam clutch products utilize the same principles of operation. Tsubaki offers various series of products to address the many types of applications where cam clutch products are most often used. The three most common types of applications are listed below:
Backstopping
Clutches are used to prevent reverse rotation of drive shafts which may cause damage to machinery and expensive equipment. The inner race can overrun freely in one direction of rotation. Reverse rotation is instantaneously prevented by the automatic engagement of the clutch. Typical backstop applications are in conveyor systems and gear reducers. Tsubaki has pioneered the non-rollover design.
Overrunning
These clutches spin freely the majority of the time, occasionally being called upon to lock up and drive. Typical is a two-speed drive, where the machine is driven by either an electric motor or geared motor. When the gearmotor drives at low speed the clutch engages. When the faster electric motor drives, the clutch overruns, automatically switching between low speed and high speed.
Indexing
Reciprocating motion applied to the clutch transforms into one-direction motion. A crank mechanism provides reciprocating motion to drive the cam clutch. The clutch drives in the forward stroke (index) and overruns on the return stroke, indexing the feeding roller forward.
®
Corporate Headquarters U.S. Tsubaki Power Transmission, LLC 301 E. Marquardt Drive Wheeling, IL 60090
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Conveyor and Construc on Chain Division
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Tel: (800) 323-7790 Fax: (847) 459-9515 www.ustsubaki.com
©2013U.S. Tsubaki Power Transmission, LLC. All Rights Reserved. Printed in U.S.A. 00/00 Rev. 0 L00000 ©2017 U.S. Tsubaki Power Transmission, LLC All Rights Reserved. Printed in U.S.A. 11/17 Rev. 2 L14015
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