The Fluid coupling is a coupling which help transmit torque from the prime mover to the machine in a gradual and constant manner .The folllowing are a few characherstics of a Fluid coupling
1. Soft starts
Start an empty conveyor with too much motor torque. You'll break belts. Damage idlers and wear the equipment out before its time.The soft start of the Fluid Coupling controls torque,allowing it to build up gradually without shock loads.
2. The right starting torque
A fully loaded crusher or mixer takes more torque to start than a standard squirrel cage motor can safely provide. A Fluid Coupling boosts the usable torque of the motor by as much as 200% and at the same time reduces current draw.
3. Protection of the motor
A motor slowly starting a big fan draws excessive current and is a source of electrical overload and failure. The Fluid Coupling allows the motor to quickly accelerate to full speed, reducing current draw to normal levels in seconds.
4. Shock absorption
A jam in the system can create torque loads ten times the nominal. Equipment will break. The Fluid Coupling will absorb this machine killing shock.
5. Perfectly balanced motor loading
Two or more motors driving the same load are nearly impossible to balance. But, with Fluid Coupling, you can balance the load easily by adjusting the amount of fluid in the coupling.
6. Elimination of unwanted vibrations
When the motor and driven machinery vibrate together, the reasonance can cause severe damage. The Fluid Coupling dampens out the unwanted vibrations.