“M” Series Sprag Clutches Fully sealed, bearing supported, high torque Sprag Clutch Assemblies with Metric and Imperial Bores. “M” series sprag clutches use precision cams made of high chrome alloy steel, hardened and honed for accurate shape. A unique finishing process ensures smooth cam surface providing uniform contact with both races for even load distribution and prolonged clutch life. High capacity bearings are used to accommodate radial and axial loads. The clutches are designed to mount directly on through shafts; the torque being transmitted by a matching key provided with each stock bore; the outer race has a precision ground diameter with tapped holes on each face to enable the fitting of gears, sprockets, pulleys, etc. Power Transmission Solutions Four types of clutch are offered: MG Series - Standard clutch for general overrunning, backstop and index applications, standard oil lubricated with option of grease. 1 /4 UNF Lubrication MI Series - Has special sprag assembly designed for high speed indexing. Holes Always oil filled for optimum performance. MO Series - Fitted with labyrinth seals for minimal drag on higher speed overrun and backstop applications. Always grease lubricated. MR Series - Utilises a special sprag cage arrangement to allow high speed overrunning of the outer race. Oil lubricated clutch suitable as a higher torque alternative to Roller Ramp clutches. Vertical Shafts - Clutches suitable for vertical shafting can be supplied - contact Cross & Morse sales office for technical advice. High Speed/Temperature Operation - Clutches can be provided with a patented venting system for applications subject to high temperature variation or overrunning at high speed. Std. Bore & Key Sizes (1) Clutch Torque Model Capacity Number Nm Max Overrun Speed RPM Inner(4) Outer Nominal Overrun Drag Nm No. (2) Thread Usable Approx Tapped Size Thread Weight Holes U.N.F. Depth kg mm (1) Std. bores clutches normally available 24 hour despatch. Other bore sizes can be supplied to order. Clutches shipped with key. (2) Mounting holes equally spaced except 700& 750 which have 6 equi-spaced plus two 30˚ from equi-spaced holes 180˚ apart. (3) Bores to H7 tolerance except Imperial bores on MG 750-1000 which are to M7 tolerance. (4) This also maximum drive speed MR series clutches. Note: All oil filled clutches must be lubricated prior to operation. Catalogue Selection INDEX Freewheel Clutches :

M Series Clutch Couplings and Stub Shaft Adaptors Standard Flexible Couplings Power Transmission Solutions The “M” Series Clutch Couplings are for shaft to shaft connection on high speed overrunning applications, such as motor to large fan shaft. Couplings C3 to C7 use Morse silent chain flexible couplings. Couplings C7.5 to C10 are Morse Gear Couplings. All couplings are fully sealed for grease lubrication. It is preferred to overrun on clutch shaft, as this permits removal of driving machinery by disconnection at flexible coupling, without driven equipment being stopped. For clutch shaft overrunning...