Features and Applications of Marland Freeweel Clutches
Image source marland.com
Marland Clutch is the leader in the designing and manufacturing of sprag-type freewheel clutches. The RMS, RMT, and RMI are the primary model freewheels of Marland Clutch that include ball bearings and seals. They have a bolt circle on their outer race to which pulleys, gears, and torque arms can be mounted. The freewheel clutch consists of an inner race, an outer race, and a set of sprags between the inner and outer races. Each sprag is nothing more than a wedge piece that allows free rotation of the inner race when rotated in the counterclockwise direction. (See illustration below). When the inner race is rotated in the clockwise direction, the sprags, through a wedging action, transmit torque from the inner race to the outer race. The opposite is true of the outer race. Clockwise rotation of the outer race in motion; counterclockwise rotation results in torque transmission from the outer race to the inner race.
Product Features
RMS Model
- General-purpose clutch used for overrunning, backstopping, and indexing applications
- Maximum wear resistance
- Lower maintenance costs
- Chromium-carbide surface sprags
- Sized to match all of the brands on the market
- Available with oil or grease lubrication
- Extra-long life
RMI Model
- Sprags will "lift-off" the outer race during high-speed inner race overrunning.
- Freewheels feature the use of centrifugal throwout sprags.
RMT Model
- Used for applications requiring high outer race overrunning and low driving speeds.
Product Applications
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Freewheeling
There is always a difference in speed between the outer and inner races, and a freewheel or overrunning condition exists. This application includes speed drives, starter drives, idler drives, drives with high inertia loads, etc.
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Backstopping
When one race is fixed to a stationary member, the other can rotate in only one direction. In this case, the clutch is used as a backstop. Backstops prevent incorrect machine rotation protecting machinery, goods, and personnel from harm. Backstops are typically utilized on inclined conveyors, pumps, speed reducers, blowers, compressors, etc.
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Indexing
When a reciprocating motion is applied to a driving race, the driven race motion will result in a unidirectional intermittent motion. This process is called indexing.
Marland-Sprag-Clutches-Catalog.pdf
Check our article What is a Sprag Clutch for more information on sprag clutches.
Contact Us if you have any questions, need more information, or are interested in purchasing freewheel clutches.
HVH Industrial is an authorized distributor of Marland Clutch. We work closely with the Marland engineering team to provide superior customer service and support.
Vladimir Harutyunyan
Vladimir Harutyunyan is the founder of HVH Industrial. He has masters degree in mechanical engineering and over 10 years of experience in mechanical power transmission field.
Feel free to connect with Vlad on Linkedin: https://www.linkedin.com/in/vladharut
Vladimir Harutyunyan
Vladimir Harutyunyan is the founder of HVH Industrial ...
Feel free to connect with Vlad on Linkedin: https://www.linkedin.com/in/vladharut
