Today the loss of production of high quality machinery, downtime due to collisions as well as excessive spare parts costs should be avoided. Now a days it is even more important to prevent such breakdowns due to programming or operating errors. Furthermore, the continuous increases in driving speed necessitate a more detailed consideration of the safety measures of a machine or plant. According to the law

E = 0.5 x m x v2

the kinetic energy of a moving object increases with the square of the velocity. That means in case of collisions a very high rotational or translational kinetic energy is transformed into a deformation energy, and consequently the extent of the damage can be very large.

This means that the kinetic energy of the motor and of all driving elements is disconnected up to the safety coupling, so reducing the extent of any damage to a minimum. After repair work the coupling is immediately ready for full operation. It engages automatically in its original position. (one reference point per 360°) Expensive repairs, high costs after a break-down as well as delays in delivery are avoided. Safety couplings are very important and have applications in almost every field:

• Machine tools
• Industrial robots
• Transfer lines
• Precision drives
• Wrapping machines
• Textile machines
• Printing machines
• Conveyor systems
• Pump drives