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Cross + Morse, Shady Lane, Great Barr, Birmingham. B44 9EU email us


Industrial Ratchet Freewheels and Adaptors
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Industrial Ratchet Freewheels provide positive one-way drive with high torque capacity within a small unit. A ratchet and pawl mechanism is used with materials and heat treatment selected for a long operating life, with safe, positive transmission. IRF's are suited to low speed (up to 150 r.p.m.) overrun applications where shock loads may be encountered, such as Agricultural machinery. Standard stock units are available in two configurations; as standard sprocket for 1/2 inch pitch chains, or with a drilled flange to fit conveyor rollers, pulleys, or wheels. Standard units have threaded bore to cycle standards, but a range of Adaptors enable fitting to keyed shafting. IRF clutches are also stocked in part-assembled condition for reworking to custom design, including finish parallel bore and keyseat. Many special Industrial Ratchet Freewheels have been manufactured to meet customers' requirements with torques over 1,000 Nm.

Industrial Ratchet Freewheels PDF Catalogue
ratchet freewheels
Steel Adaptors for Industrial Ratchet Freewheels
These adaptors enable easy assembly of standard IRF's to conventional keyed shafting.

Adaptors are solid bore, (except F11 which has 15mm plain bore) and can be finished bored and keyed to customers specifications.
steel adaptors
Standard Sprag Clutches

"M" Series Sprag Clutches

"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.

Four types of clutch are offered:

MG Series
- Standard clutch for general overrunning, backstop and index applications, standard oil lubricated with option of grease.
MI Series - Has special sprag assembly designed for high speed indexing. 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 M 750 - 1000 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.

'M' Series Sprag Clutches PDF Catalogue


sprag clutches