• Patented coupling mechanism C Line

    Patented coupling mechanism C Line

    Our patented coupling mechanism C Line is the result of our knowledge and development. It enables easy coupling and uncoupling of the PTO drive shaft. The cover offers the user more comfort because of its ergonomically and compact form. The users’ security is assured, because he can’t get entangled in protruding parts of the yoke. There is also less dirt present at handling and there are fewer difficulties connected with it.

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    The patented C Line cover is made out of extremely durable plastic. The cover consists of the housing, the lid and the lever pin. The cover is installed on the yoke with the help of a spring ring, as showed on the picture below.

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  • Flexible cone

    Flexible cone

    We designed, especially for our customers, a protective cone which is flexible and enables easier handling while coupling the PTO on the tractor or working machine. The flexible cone offers additional comfort when coupling the PTO, because you can get a good grip in the limited shaft space.

     
  • EASY maintenance

    EASY maintenance

    Our PTO drive shafts enable the user easy maintenance. The greasing nipples on standard crosses are positioned under angle to enable the user better access. Easier access is also possible because of the flexible cone. We listened to the wishes of our customers and placed the greasing nipple at wide-angle PTO’s into the cross bearing. The other novelty, we introduced with wide-angle PTO drive shafts is in line greasing. We wanted to additionally simplify the maintenance and extend the lifespan of joints.

     
  • Safety

    Safety

    In our company we are aware of the importance of the users' safety. That's why our PTO's are produced according to legal regulations and European directives and bear the CE sign. A key factor for safety assurance is the accession in the products’ development phase. By all means, the users’ knowledge about the correct use of a PTO drive shaft is vital. This means, that every users’ duty is to read and follow the safety instructions.

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    What does the CE-sign mean?

    The CE-sign, which can be found on the product, marks the producers’ declaration, that the marked product fulfils all requirements regarding safety, health and environmental care, which are defined by legislation. The marking of products with CE is permitted only to producers, which have successfully undergone all prescribed testing.

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  • Made in EU

    Made in EU

    The quality of products is for us and for our customers of high significance. This is why we use European made components in our products. We also perform constant control of incoming materials and the control of finished products. In our company we work according to ISO 9001.

     
 
 

LENGTH

Measure the minimum distance between the coupling shafts and deduct from this value the values given in the table below, with regard to the size and type of the chosen PTO drive shaft. This results in the PTO drive shaft distance kk. When selecting the standard PTO drive shaft from the catalogue it is required to select the kk value which is the first smaller than the measured one.

 

Working length of the PTO drive shaft

Before using the PTO drive shaft please consider the following values of the working length. The values are in millimeters.

WORKING ANGLE

The PTO drive shaft enables the transfer of torque between two shafts. The recommended working angle of a PTO drive shaft with single joints is up to 25 degrees. The PTO drive shaft with single joints can rotate also between the angles of 25 degrees till 40 degrees, but can transfer only 40% of the nominal torque of the PTO drive shaft.

A two sided wide-angle PTO drive shaft can operate up to an angle of 80 degrees. If the angle is exceeded PERMANENT DAMAGE of the joint or the whole PTO drive shaft is caused. With PTO drive shafts, where there is a single joint on one side and a wide-angle joint on the other, we need to take care, that the single joint does not exceed 15 degrees at 540 rotations per minute or 7 degrees at 1000 rotations per minute.

OUTER YOKES

Our C Line patented outer yoke C is installed on every PTO drive shaft, on the tractor coupling side (mover side). The direction of coupling is marked on the stamp, on the PTO safety shield.

In case, that you don't need a clutch on the coupling side of the working machine, you can choose between two possibilities in our program – BR+ or BR.

BR+

A PTO drive shaft with this description has, as in the picture below, on both ends of the PTO the patented C Line coupling mechanism installed.

BR

A PTO drive shaft with this description has, as in the picture below, on the tractor end the patented C Line coupling mechanism installed and on the working machine end a normal outer yoke with a push-pin installed.

SPECIAL OUTER YOKES

Our sells program includes also the production of PTO drive shafts with special versions of outer yokes. You can see the various types in the pictures below. In case, that you need a PTO drive shaft with a special outer yoke, please contact our distributor our send an inquiry to us.

PTO drive shafts with special outer yokes are not classified as a standard production program, therefor they are ON REQUEST.


 
   
   
   

  

COUPLING PROFILE

The coupling shafts on tractors and machines are produced according to defined standard dimensions. Various machines require, because of their specific needs, various coupling profiles. That is why you need to correctly define the coupling profiles on both sides. Below you can see various coupling profiles. For couplings, which are not represented below, please send us an inquiry as we are able offer other coupling made to order.

SAFETY ELEMENTS - CLUTCHES

Overrunning clutch (PS and PSL)

The overrunning clutch protects the mover (tractor) from loads due to inertial mass of the working machine. This clutch does not protect the machine from overloads. It is primarily intended for machines where greater masses rotate with large speed - rotors. These machines are primarily rotary mowers, flail mowers, etc. The overrunning clutch protects the tractor from traction energy of the inertial mass of the machine.
Before deciding, check if there is already an overrunning clutch installed in your machine.

How the clutch works:

The overrunning clutch is designed in a way that enables the power transmission (lever) from the tractor to the working machine and prevents the power transmission from the working machine onto the tractor. The overrunning clutch protects the tractor before damage, connected with the returning transmission from the machine. We refer to the transmission from the machine, which is caused by inertial masses, for example the mass of hammers and rotor in a flail mower, the mass of discs and drums in mowers. The clutch does not limit a too large transmission of power (lever) onto the machine. This means, that it does not protect the machine before overloading or damage, which is caused due to overloading.

How do I know if I need a PS (right) or PSL (left)?

You can correctly define the direction of rotation, if you look towards the mover (tractor) and find out if the shaft rotates clockwise (right - PS) or counterclockwise (left - PSL). In case, that you will try to define the direction of rotation from inside the tractor, it can come to a mistake. If you want to define the direction of rotation of the rear shaft, you need to look from the rear side of the tractor towards the shaft and for the front shaft you need to look from the front side of the tractor towards the tractor.

How can I find out if I have a PS (PSL) or VS clutch at home?

In practice there is often confusion between an overrunning clutch (PS or PSL) and a ratchet torque clutch (VS). The user can easily find out which of the clutches is installed on the PTO drive shaft. Couple the PTO drive shaft onto a still standing working machine and try to rotate the free outer yoke on the tractor side to the left and right. If you can't rotate the PTO drive shaft without rotating the shaft on the working machine then you have a VS star ratchet clutch installed. If a PS clutch is installed, the PTO drive shaft will rotate clockwise with little force used without rotating the shaft on the machine. If a PSL is installed the PTO drive shaft will rotate counterclockwise with little force used without rotating the shaft on the machine

Ratchet torque clutch (VS)

The ratchet torque clutch VS protects the machine from overloads. It is intended for machines without installed lever protection. When the slip of the clutch occurs, it is required to stop the machine and to find out what caused the slip. If the cause for slipping is due to overload of the machine, it is necessary to lower the load – to reduce the working speed… The nominal torque of the clutch is factory set, with a range from 300Nm to 900Nm. They are used particularly for loading trailers, rakes and tedders, manure spreaders, maize pickers, etc. When you notice, that the power transmission is lower or the clutch slips very often, you need to examine the clutch at a workshop.

How to choose the right nominal torque (clutch lever)?

The clutch lever is usually defined by the producer of the working machine – noted in the manual.

If you cannot find the data in the manual you can calculate the required nominal torque of the clutch by yourself. The producer gives the power in kW or HP thereupon you need to know the working rotation speed. With this data you can calculate the needed nominal torque with this formula:

M (Nm) = required nominal torque
P (kW) = required power for working
n (min -1) = rotation speed of the PTO, required for working (usually 540 min -1 or 1000 min -1 or as prescribed by the producer – label on the working machine).

How the clutch works:

The ratchet torque clutch VS is design in a way that enables the correct transmission of power (lever) from the tractor onto the working machine and prevents too big power transmission from the tractor onto the working machine.
The ratchet torque clutch protects the machine before damage linked to overloading. It prevents a too big power transmission (lever) on the machine and with that prevents damage due to overloading, for example overloading because of too high working speed.
When the clutch is activated the transferred lever to the machine is only as high as it is set. The excess of lever is not transmitted to the machine but eliminated through the clutch. When the clutch is being activated over a longer period of time it gets heated due to the elimination of the exceeded lever. Consecutive the springs get tired and the factory set nominal torque decreases. In this case you need to carry out maintenance of your VS clutch at an authorized workshop, which has all the required tools at hand for a safe disassembly, reassembly and final checkup.
The disassembly of a VS clutch without the suitable tools can cause serious injuries due to the energy, which is set free from the prestressed springs - danger of flying objects. The VS clutch does not limit the transmission of power (lever) from the working machine onto the tractor, like a PS or PSL clutch does. The working of a VS and VS1 clutch is identical.

How can I find out if I have a PS (PSL) or VS clutch at home?

In practice there is often confusion between an overrunning clutch (PS or PSL) and a ratchet torque clutch (VS). The user can easily find out which of the clutches is installed on the PTO drive shaft. Couple the PTO drive shaft onto a still standing working machine and try to rotate the free outer yoke on the tractor side to the left and right. If you can't rotate the PTO drive shaft without rotating the shaft on the working machine then you have a VS star ratchet clutch installed. If a PS clutch is installed, the PTO drive shaft will rotate clockwise with little force used without rotating the shaft on the machine. If a PSL is installed the PTO drive shaft will rotate counterclockwise with little force used without rotating the shaft on the machine

Ratchet torque clutch (VS1)

The ratchet torque clutch VS1 protects the machine from overloads. It is intended for machines without installed lever protection. When the slip of the clutch occurs, it is required to stop the machine and to find out what caused the slip. If the cause for slipping is due to overload of the machine, it is necessary to lower the load – to reduce the working speed… The nominal torque of the clutch is factory set, with a range from 1200Nm to 1500Nm. They are used particularly for loading trailers, rakes and tedders, manure spreaders, maize pickers, etc. When you notice, that the power transmission is lower or the clutch slips very often, you need to examine the clutch at a workshop.

How the clutch works:

The ratchet torque clutch VS1 is design in a way that enables the correct transmission of power (lever) from the tractor onto the working machine and prevents too big power transmission from the tractor onto the working machine.
The ratchet torque clutch protects the machine before damage linked to overloading. It prevents a too big power transmission (lever) on the machine and with that prevents damage due to overloading, for example overloading because of too high working speed.
When the clutch is activated the transferred lever to the machine is only as high as it is set. The excess of lever is not transmitted to the machine but eliminated through the clutch. When the clutch is being activated over a longer period of time it gets heated due to the elimination of the exceeded lever. Consecutive the springs get tired and the factory set nominal torque decreases. In this case you need to carry out maintenance of your VS1 clutch at an authorized workshop, which has all the required tools at hand for a safe disassembly, reassembly and final checkup.
The disassembly of a VS clutch without the suitable tools can cause serious injuries due to the energy, which is set free from the prestressed springs - danger of flying objects. The VS1 clutch does not limit the transmission of power (lever) from the working machine onto the tractor, like a PS or PSL clutch does. The working of a VS and VS1 clutch is identical.

How to choose the right nominal torque (clutch lever)?

The clutch lever is usually defined by the producer of the working machine – noted in the manual.

If you cannot find the data in the manual you can calculate the required nominal torque of the clutch by yourself. The producer gives the power in kW or HP thereupon you need to know the working rotation speed. With this data you can calculate the needed nominal torque with this formula:

M (Nm) = required nominal torque
P (kW) = required power for working
n (min -1) = rotation speed of the PTO, required for working (usually 540 min -1 or 1000 min -1 or as prescribed by the producer – label on the working machine).

Shear bolt clutch (ST)

The shear bolt clutch ST protects the machine from overloads. It is intended for machines without installed lever protection and which require an immediate stop of torque transfer. The machine stops, therefore you need to replace the shear bolt of equal strength class and size to continue with work. The nominal torque of the clutch is factory set, with a range from 650Nm to 3600Nm. They are predominantly used for machines intended for soil treatment, such as rotary milling cutters, rotary harrows, etc.

How the clutch works:

The shear bolt clutch ST is designed in a way that enables the correct transmission of power (lever) from the tractor onto the working machine and prevents too big power transmission from the tractor onto the working machine.
The shear bolt clutch protects the machine before damage linked to overloading. It prevents a too big power transmission (lever) on the machine and with that prevents damage due to overloading, for example overloading because of too high working speed.
The shear bolt clutch limits the lever similar as the clutches VS, VS1 and TS, with the difference that the power transmission in case of exceeded lever is stopped at once (the bolt brakes) and the machine doesn’t have transmission over the PTO drive shaft anymore. The ST clutch does not limit the transmission of power (lever) from the working machine onto the tractor, like a PS or PSL clutch does.

How to choose the right nominal torque (clutch lever)?

The clutch lever is usually defined by the producer of the working machine – noted in the manual.

If you cannot find the data in the manual you can calculate the required nominal torque of the clutch by yourself. The producer gives the power in kW or HP thereupon you need to know the working rotation speed. With this data you can calculate the needed nominal torque with this formula:

M (Nm) = required nominal torque
P (kW) = required power for working
n (min -1) = rotation speed of the PTO, required for working (usually 540 min -1 or 1000 min -1 or as prescribed by the producer – label on the working machine).

Friction clutch (TS)

The friction clutch TS protects the machine from overloads. It is intended for machines without installed lever protection. There is no need to stop the torque transfer when the clutch slips. The nominal torque of the clutch is factory set, with a range from 400Nm to 2800Nm. The clutches are particularly used for rotary milling cutters, rotary harrows, etc.

How the clutch works:

The friction clutch TS is designed in a way that enables the correct transmission of power (lever) from the tractor onto the working machine and prevents too big power transmission from the tractor onto the working machine.
The friction clutch protects the machine before damage linked to overloading. It prevents a too big power transmission (lever) on the machine and with that prevents damage due to overloading, for example overloading because of too high working speed.
When the clutch is activated the transferred lever to the machine is only as high as it is set. The excess of lever is not transmitted to the machine but eliminated through the clutch. When the clutch is being activated over a longer period of time it gets heated due to the elimination of the exceeded lever. Consecutive the disks get tired and the factory set nominal torque decreases. In this case you need to carry out maintenance of your TS clutch at an authorized workshop.

How to choose the right nominal torque (clutch lever)?

The clutch lever is usually defined by the producer of the working machine – noted in the manual.

If you cannot find the data in the manual you can calculate the required nominal torque of the clutch by yourself. The producer gives the power in kW or HP thereupon you need to know the working rotation speed. With this data you can calculate the needed nominal torque with this formula:

M (Nm) = required nominal torque
P (kW) = required power for working
n (min -1) = rotation speed of the PTO, required for working (usually 540 min -1 or 1000 min -1 or as prescribed by the producer – label on the working machine).

SIZE

In choosing the appropriate size of the PTO drive shaft you must bear in mind the requirements of the working machine and the torque produced by the mover (tractor). Usually we do not know the torque produced by the tractor, but we know the power of the tractor and the nominal rational speed.
Torque calculation:

When choosing the size of the PTO drive shaft types BR, BR+, PS or PSL make sure that the calculated torque does not exceed the maximum torque specified in the table.

For a better notion about dimension, used at single sizes, you can help yourself with the table below.



LIFESPAN

The endurance of the PTO drive shaft is usually connected to the lifespan of joint bearings, which depends on the torque, rotation speed and working angle.

The lower graph represents the principle for defining:

Example 1: The size of the PTO drive shaft, with regard to the expected lifespan, working angle, rotation speed and torque.

Example 2: The lifespan of the PTO drive shaft, with regard to the size, torque, rotation speed and working angle

  • CATALOGUE C LINE 2015

    CATALOGUE C LINE 2015

    In our catalogue C Line 2015 you can find information about PTO drive shafts, Wide-angle PTO’s and spare parts.

    PDF - CATALOGUE C LINE 2015 (12.36 MB)
  • Brochure Shear bolt clutch ST 2016

    Brochure Shear bolt clutch ST 2016

    We prepared a new brochure about our new, patented shear bolt clutch (ST). In the brochure you will find information about the advantages as well as technical data.

    PDF - Brochure Shear bolt clutch ST 2016 (1.42 MB)