The TRANSFLUID coupling (K series) is a constant filling type comprising of three main elements:

1. Driving impeller (pump) mounted on the input shaft.
2. Driven impeller (turbine) mounted on the output shaft.
3. Cover, flanged to the output impeller, with an oil-tight seal.

The first two elements can work both as a pump and/or turbine.

CONSTANT FILL FLUID COUPLINGS: OPERATING CONDITIONS

The TRANSFLUID constant fill fluid coupling is a hydrokinetic transmission.
The impellers perform like a centrifugal pump and a hydraulic turbine. An input drive to the pump (e.g. electric motor or Diesel engine) kinetic energy is delivered to the coupling oil. The oil moves by centrifugal force across the blades of the turbine towards the outside of the coupling.
This absorbs the kinetic energy and develops a torque which is always equal to input torque, thus causing rotation of the output shaft. The wear is practically zero since there are no mechanical connections. The efficiency is influenced only by the speed difference (slip) between pump and turbine.
The slip is essential to the functioning of the coupling: there could not be torque transmission without slip! The formula for slip, from which the power loss can be deduced is as follows:

slip %=((input speed – out speed) / input speed) x 100

In normal conditions (standard duty) the slip can vary from 1,5% (large power) to 6% (small power).

The TRANSFLUID constant fill fluid coupling follows the laws of all centrifugal machines:

1. Transmitted torque is proportional to the square of input speed;
2. Transmitted power is proportional to the cube of input speed;
3. Transmitted power is proportional to the fifth power of the circuit outside diameter.

The K Series couplings work using oil but they are also available for water operation upon request.

They are also available certified according to directive 94/9/EC (Atex) covering all categories.

L'articolo K Series: Constant Fill Fluid Couplings sembra essere il primo su Transfluid.

The KFBD series Constant Fluid Couplings are used on all industrial equipment driven by internal combustion engines up to 500 kW. By transmitting power through a fluid, they improve overall performance and protect both driving and driven machines.

THE BENEFITS OF CONSTANT FILL FLUID COUPLINGS

When you drive through KFBD Constant Fluid Couplings you profit from these Basic Benefits.

1 – Frees engine during heavy starts.
During heavy starts and sudden running load increases, engine lugging is prevented. The Fluid Coupling simply “slip” while it smoothly picks up the load.

2 – Provides smoothly drive
The mechanical connection is eliminated; power and torque are transmitted entirely through the fluid. The result is a smooth, sustained flow of energy minus the shocks and strains which, with mechanical drives, cut equipment life.

3 – Prevents transmission of shock loads
Fluid Couplings protect both driving and driven equipment by smoothing out shock loads and preventing them from striking solid resistance.

4 – Assures damping effects
Torsional vibrations from the engine are drastically dampened by Fluid Coupling, increasing the life of the entire driveline.

5 – Transmits full input torque
The patented Transfluid Circuit design delivers output torque always equal to the input torque. The engine can turn at its max torque-rpm, even when driven is at stall.

6 – High radial load capability
The KFBD hydraulic coupling series has also been designed for applications requiring pulley installation, particularly heavy-duty service.

L'articolo KFBD: Constant Fill Fluid Couplingsc sembra essere il primo su Transfluid.

The SKF series of Constant Fill Fluid Couplings is used on all industrial equipment types driven by internal combustion engines up to 180 kW requiring a tight flywheel mounting. By transmitting power through a fluid, they improve overall performance and protect both driving and driven machines.

BENEFITS OF CONSTANT FILL FLUID COUPLINGS

When you drive through Transfluid Hydraulic Coupling you profit from these Basic Benefits.

1. Frees engine during heavy starts
   During heavy starts and sudden running load increases, engine lugging is prevented. The Fluid Coupling simply “slip” while it smoothly picks up the load.
2. Provides smoothly drive
   The mechanical connection is eliminated; power and torque are transmitted entirely through fluid mass and velocity. The result is a smooth, sustained flow of energy minus the shocks and strains which, with mechanical drives, cut equipment life.
3. Prevents transmission of shock loads
   Fluid Couplings protect both driving and driven equipment by smoothing out shock loads and preventing them from striking solid resistance.
4. Assures damping effects
   Torsional vibrations from the engine are drastically dampened by the Fluid Coupling, increasing the life of the entire driveline.
5. Transmits full input torque
   The patented Transfluid Circuit design delivers output torque always equal to input torque. The engine can turn at its max torque-rpm, even when driven is at stall.
6. Radial load capability.
   The SKF series includes the SKFE line which allows the installation of a pulley on output shaft.

L'articolo SKF: Constant Fill Fluid Couplings sembra essere il primo su Transfluid.

The KPTB is a variable fill fluid coupling designed to be a start-up drive or variable speed drive.
The KPTB hydraulic coupling has an externally driven oil feeding pump and a remote electrically operated ON-OFF valve. When the valve is turned ON the fluid coupling circuit is fed, when it is turned OFF rapid oil drain occurs through orifices located on the periphery of the coupling. The forced bearing lubrication is continuously assured.
The oil pump flow can be operated through an oil flow control valve or frequency converter (integrated into the oil feed pump motor), allowing KPTB to be a variable speed drive.
The KPTB range is suitable for power up to 1700 kW as start-up drive and 500 kW as variable speed drive.
The input and output straight shafts can be connected to an electric motor and driven machine by elastic and flexible couplings.
Standard accessories include: oil motor pump, oil filter with pressure and temperature gauges, ON-OFF electric valve, oil temperature switch, oil level indicators, connecting wiring box with plug.
Options include: water or air heat exchanger, quick release valves, output pulley, flexible and elastic couplings, cardan shafts and electric control board.

Special versions for low-temperature operation and Eex design are available.

HYDRAULIC COUPLING – FEATURES

The variable fill fluid coupling allows a disconnect of the motor from the load granting the following advantages:

• motor start-up at no load
• smooth start-up even possible under nominal motor current by full starting control
• shock and overload protection
• absorbtion of vibrations
• high radial load capacity (KPTE)
• no belt slip
• remote control by electric valve
• load positioning
• cheap and easy maintenance due to external mounting of main accessories like oil filter, feeding pump and control valve
• longer life thanks to no friction linings to wear out
• accurate variable speed performances

VARIABLE FILL FLUID COUPLINGS – APPLICATIONS

Start-up drive:
– mills, crushers, wood chippers, grinders, shredders
– belt conveyors
– reciprocating and centrifugal pumps, compressors
– marine propulsion
– generators
– centrifuges, fans and blowers
– mixers

Variable speed drive:
– centrifugal pumps and compressors
– fans and blowers
– belt conveyors

HYDRAULIC COUPLING: ACCESSORIES

MPCB MANAGEMENT SYSTEM

The MPCB for KPTB and KSL, is an electronic device, designed and manufactured by Transfluid, with Transfluid’s proprietary software, capable of performing the following functions:

• Monitoring of input and output fluid coupling speed
• Monitoring of all fluid coupling parameters
• Sending fc status and alarm signals to the main control room
• Implementation of interlock logics
• Local or remote output speed control

L'articolo KPTB: Variable Fill Fluid Couplings sembra essere il primo su Transfluid.

The KPTO is a variable fill fluid coupling enclosed into a box connected to the Diesel engine by SAE housing. The KPTO is designed to meet the market requirements for a unit combining the technical features of a conventional Power Take Off with a fluid coupling’s performance. The KPTO variable fill fluid coupling has an integral feeding pump driven by the Diesel engine.
A remote electrically operated ON-OFF valve allows the fluid coupling circuit feed when turned ON and a rapid oil drain through orifices located on the periphery of the fluid coupling when turned OFF.
The forced bearing lubrication is continuously assured.
The the KPTO range is suitable for powers up to 1000 kW.
The engine flywheel is connected to the KPTO input by an elastic coupling. The output shaft can be connected to the driven machine by elastic coupling, cardan shaft or pulley.
Standard accessories include: oil feeding pump, oil filter with pressure and temperature gauges, ON-OFF electric valve, oil temperature switch and oil level indicators.
Optional accessories include: water or air heat exchanger, quick release valves, output pulleys, elastic couplings, output flange for cardan shafts and cardan shafts.

HYDRAULIC COUPLING – FEATURES

The KPTO drain type fluid coupling allows a disconnect of the engine from the load granting the following advantages:

• unloaded engine warm-up
• smooth start-up, no belt slip
• shock and overload protection
• absorbtion of vibration
• high radial load capacity
• remote control by electric valve
• load positioning
• cheap and easy maintenance due to external mounting of the main accessories like oil filter, feeding pump and control valve
• longer life thanks to no friction linings to wear out

VARIABLE FILL FLUID COUPLING: ACCESSORIES

MPCB MANAGEMENT SYSTEM

The management system MPCB is a device developed by TRANSFLUID, both in the hardware and software, able to manage the different functionalities of KPTO fluid coupling; it allows the engagement or disengagement of the KPTO depending on the different operational profiles, measures the torque and the power transmitted from the coupling and performs the task of system diagnostics.

L'articolo KPTO: Variable Fill Fluid Couplings sembra essere il primo su Transfluid.

TPO air clutches are powerful and reliable components, the technical development of which has been achieved with years of experience in transmissions.
Their performance range can fulfill the most different applications, with transmittable torques up to 1170 daNm, remaining constant without requiring any further regulation.
While having the great advantage of being modulated with air pressure variation, their compressed air feeding system can be remote controlled and automatically self compensate for wear.
The main technical features of TPO air clutches are:

• All the operating discs are made of high-quality cast iron, with large surfaces from where heat generated with friction is easily dissipated without creating dangerous tensile stresses.
• The friction discs are made of a composite compound without asbestos and are provided with external gear teeth to engage into the driving ring’s internal gears.
• The external dimensions are very small and for this reason the assembly phase is facilitated.
• The wide dimensions of the bores allow shafts with large diameters to be mounted.

In normal and medium operating conditions, clutches with 2 or 3 discs can be used, transmitting a torque twice or three times more than the corresponding one with a single disc, and leaving external dimensions unchanged.

TPH AIR CLUTCHES

The TPH air clutches model is designed for in-line drives and is based on the standard TPO clutch pack with a self-contained stationary thruster operating with 9 bar (130 Psi) air pressure.

L'articolo TPO-TPH: Clutch & Power Take-Off sembra essere il primo su Transfluid.

TRANSFLUID has developed the HFO-HFR clutches to meet the growing market demand for power take-offs for high speed, high horsepower industrial engines, and remote-control operation.
HFO consists of an oil actuated clutch assembly (dry plates) with shaft and bearings suitable for high radial loads mounted in a cast iron housing that provides easy engine installation.

The connecting flange and housing to the engine are SAE standard. A rotating union provides the oil actuation mounted on the shaft end allowing the oil to engage and disengage the clutch.

This system allows the use of HFO clutches for belt-driven applications only. The oil actuation allows remote control as well as a larger transmittable torque compared to the traditional over-center PTOs. Due to the continuous pressure applied to the clutch plates, the HFO is a self-adjusting clutch that drastically reduces maintenance costs, especially on heavy-duty applications where plate wear is typical.
The HFR clutches have identical performances as HFO but it is designed for in-line applications. The oil actuation is provided by radial oil inlet in the bearing carrier allowing the same operation as HFO clutches.

CLUTCHES ACCESSORIES

MPCB

The MPCB controller is a dedicated printed circuit board entirely developed by TRANSFLUID, to monitor and control all functions of TRANSFLUID’s dry clutches, such as input and output speed, oil temperature and oil pressure. Our controller allows the soft engagement of the driven machine preventing nclutch overload and engine stalling;  therefore HF clutch and TowerClutch transmission are fully protected by unexpected failure due to misuse or abuse of the product.
The MPCB has been designed to continuously operate in heavy duty conditions; the most common applications are crushers, wood chippers, road milling machines, metal shredders, compressors and volumetric pumps.
The proprietary software is personalized according to the specific application and a separate Display can be integrated for a better view of all above mentioned parameters.
The MPCB  can be linked to the the engine control box via CAN BUS SAE J1939 protocol (or CAN BUS Open), consequently warning, alarm messages and any clutch status are transmitted via a single IP67 bus cable.
The MPCB enclosure is installed and wired on board the clutch through rubber mountings to dampen vibrations and shorten electric harnesses length.

L'articolo HFO-HFR: Clutch & Power Take-Off sembra essere il primo su Transfluid.

The SU unit is a self-standing power take-off featuring an input shaft with radial load capability and SAE4-10″, SAE3-11 1/2nd”, SAE1-14″ standard output. Its design allows the installation on output side of any kind of PTOs including Transfluid HFR/HFO oil actuated clutches, pumps and transmissions; the output design allows high radial load application.

SU clutch & power take-off finds applications on either electric motors or industrial and marine Diesel: typical installation is an engine front end leaving engine free from supporting weight and unwished vibrations.

L'articolo SU: Clutch & Power Take-Off sembra essere il primo su Transfluid.

PF is a power take off for Diesel engine installation, with RBD elastic coupling on input side to protect the engine and driven equipment.

PF clutch & power take off is available for SAE housing and flywheel connections.

It has been designed for both in-line and pulley drive featuring a high radial load capability.

Atex certification available.

L'articolo PF: Clutch & Power Take-Off sembra essere il primo su Transfluid.

The MFO mechanical power take-off consists of a lever-actuated clutch with a shaft and bearings mounted in a rigid cast housing.
It is designed for in-line and sideload applications for internal combustion engines with standard SAE industrial flywheel/flywheel housing dimensions.
With the exception of the MFO 110 power take-off, all remaining models are assembled with KEVLAR® DISCS for heavy-duty and torsionally active applications.
MFO mechanical power take-offs will allow:
– to simplify installation time (no pilot bearing alignment required)
– to increase uptime and engine life
– to reduce inventory

L'articolo MFO: Clutch & Power Take-Off sembra essere il primo su Transfluid.