FFS Series Friction Torque Limiter PTO Overload Protection Clutch

When agricultural machinery manufacturers fit a PTO overload clutch to their implements and equipment, they take into account the maximum torque that the PTO driveline can handle on that piece of equipment including gearboxes, shafts, chains and sprockets.

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FFS Series Friction Torque Limiter PTO Overload Protection Clutch

PTO Overload Protection Clutch Introduction

When agricultural machinery manufacturers fit a PTO overload clutch to their implements and equipment, they take into account the maximum torque that the PTO driveline can handle on that piece of equipment including gearboxes, shafts, chains and sprockets.

For example ( maximum gearbox torque rating 2000Nm )
The manufacturer will then fit a PTO overload clutch to the implement with a slightly lower torque rating, thereby ensuring that the maximum gearbox torque rating is not exceeded in the event of a machine blockage or obstruction.

There are generally two types of PTO overload clutch, a cam cut-out clutch and a friction disc torque limiting clutch, commonly all referred to as "PTO Slip Clutches".

PTO Overload Protection Clutch PTO Overload Protection Clutch

SeriesMax Torque(Nm)Friction DiscSpline(Female)Spline(male)A(mm)B(mm)C(mm)D(mm)
FFS11200φ1401 3/8" Z61 3/8" Z6161.52938φ180
FFS1D1 3/8" Z21
FFS21800 φ1401 3/8" Z61 3/8" Z6φ200
FFS2D1 3/8" Z21
FFS2C1 3/8" Z6
FFS2E1 3/8" Z20

PTO Overload Protection Clutch

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​1. pressure plate
2. internal disc
3. friction lining(qty=2)
4. hub
5. taper pin for the hub(with nuts)
6. bushing
7. flanged yoke
8. complete bolt & spring(qty=8)

PTO Overload Clutch Importance

PTO Overload Protection Clutch

The important role that the PTO slip clutch plays is often overlooked in the event of a PTO driveline breakdown. These often expensive breakdowns are usually regarded as an unfortunate occurrence or "bad luck".

​The reality is that if the PTO slip clutch is properly maintained, it will protect all components in the PTO driveline including the tractor transmission and the implement agricultural gearboxes in the event of a machine blockage or obstruction.

PTO Overload Clutch Service Intervals

Friction Clutches can seize or go over their recommended torque limit when not in use and should be serviced once every year, 1 - 2 months before the start of the working season.

Cam Cut Out Clutches can seize or go over their torque limit, when the special anti-friction grease which lubricates them breaks down and loses its properties. Cam clutches should be tested once every year and serviced once every two years.

We also Supply PTO Shafts & Agricultural Gearboxes.

PTO shafts may be designed to withstand pressure, impact, or tension according to different applications. These PTO shaft parts can be equipped with a shear pin or slip clutch to protect them against common obstacles. There are several different PTO shafts and each type has its unique characteristics.

The PTO shafts are available in two styles, North American and Italian. The latter type utilizes a universal joint to distribute power from the tractor to the attached implements. The two styles are not identical, however, and the differences between them are important. One type of PTO shaft is a non-shear version, which has a yoke-to-yoke arrangement. Non-shear versions are ideal for massive lawn mowers, and non-shear PTO shafts have a yoke-to-yoke arrangement.

pto-shaft

Agricultural gearboxes: https://hzpt.com/agricultural-pto-gearbox/

Automatic Torque Limiter

PTO Overload 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 three 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 warmly welcome friends from all walks of life to visit and establish mutually beneficial long-term cooperative relations.

Triangular End Yoke for PTO Shaft

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We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.

Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

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