RAS1 Series Overrunning Clutch for PTO Shaft

The overrunning clutch allows any implement to free-wheel to a stop. Any implement with a large rotating mass may need overload protection by allowing it to free-wheel to a stop. The clutch prevents the machine from driving the tractor when the PTO drive shaft has stopped. The overrunning clutch direction is dependent on the application, the normal tractor PTO direction is clockwise. Overrunning clutches do not absorb any energy, so start-up overloads must be absorbed by other means.

Series Max Torque(Nm) Spline(Female) Spline(Male) A(mm) B(mm) C(mm)
RAS1 2400 1 3/8″ Z6 1 3/8″ Z6 142 21 38

Performance Advantage of Overrunning Clutch

◆ Allows inertia from implement to dissipate without putting load back through the tractor or system.
◆ Easy maintenance.
◆ Smooth operation.
◆ Offered in various driveshaft sizes and hub configurations.
◆ Easier connection by enabling the shaft to be aligned with the tractor PTO spline.

Design Features of Overrunning Clutch

◆ Overrunning clutch is offered in 2 different
configurations – for both clockwise (R) and counter-clockwise (L) overrunning directions.
◆• The counterclockwise version is recognized by the groove.


  1. Circlip
  2. Retaining washer
  3. Pushpin kit
  4. Hub
  5. Prong kit
  6. Housing with the splined yoke
  7. Grease nipple

We also supply PTO shafts & Agricultural Gearboxes.

The agricultural gearbox and PTO shaft are 2 components of a tractor that work together to transmit power. The PTO shaft rotates at 540 to 1,000 rpm. The agricultural gearbox and PTO shaft are connected by yokes at both ends. Depending on the application, they may have a higher or lower torque rating. As a professional agricultural machinery parts supplier, we also offer a wide range of agricultural gearboxes for sale. Contact us now to get more info!

Overrunning Clutch Manufacture

Ever-power covers an area of more than 12000 square meters and employs more than 100 people. We specialize in developing, manufacturing, and selling PTO shafts, industrial universal shafts, automobile drive shafts, universal joint coupling shafts, universal joints, etc. The annual turnover is 60 million yuan and 9 million US dollars, increasing year by year. Our products enjoy a high reputation among customers in Europe, the United States, Asia, Australia, and North America. We are the top 3 professional OEM suppliers of many agricultural tool factories in the domestic market. ever-power transmission shaft adheres to our “QDP” principle: quality first, rapid delivery, and competitive price. We have obtained CE, TS / 16949, and ISO9001 certification, and have systematic production equipment and a QC team to ensure our quality and delivery. We welcome friends from all walks of life to visit and establish mutually beneficial long-term cooperative relations.

edited by mmy

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