New disengaging torque limiter from Mayr
Latest EAS-reverse unit with automatic re-engagement protects machines from overload damage
MAYR power transmission have developed EAS-reverse – a new disengaging torque limiter that is easy to handle, provides long run-out times and re-engages through slow backwards rotation.
The torque limiter provides permanent protection for machines and protects them reliably against overload damage, providing operational safety and maximum productivity.
In arduous operating and ambient conditions (eg dust, dirt, spray water, heat, cold etc), drivelines – particularly in heavy mechanical engineering – are frequently encapsulated and, therefore, can be difficult to access.
The new EAS-reverse torque limiter has been specially designed to withstand both high loads and deliver automatic re-engagement, making it suitable for drives which cannot be accessed for re-engagement purposes.
All functional processes on the EAS-reverse unit can be automated via the drive alone.
According to Mayr, in the event of overload, if the torque exceeds the value set on the clutch, a patented disengagement mechanism separates the input and output almost ‘residual torque-free’ with high switch-off and repetitive accuracy.
The kinetic energy from the rotating masses stored in the system can slow down freely. After responding, the clutch withstands long drive run-out times, and through slow reverse rotation, the EAS-reverse torque limiter re-engages automatically without the use of pneumatics or hydraulics.
The EAS-reverse torque limiter transmits torque with exceptionally low wear and features hardened functional parts.
The unit offers adaptable, branch-optimized solutions, thanks to its numerous versions and additional characteristics. For example, the combination with an elastomer coupling allows easy separation of the driveline by loosening a few screws without displacing the motor or gearbox.
In addition, applications with load-holding outputs can be combined with a brake disk on the output side.
The EAS-reverse has also been designed to easily integrate into a solid housing (standard IEC or NEMA dimensions). It is therefore protected against dust and spray water, and is resistant to adverse ambient conditions.
The torque limiter currently covers three construction sizes with a torque range from 80-2,500Nm, and the range is to be extended with a fourth construction size (up to 5,000Nm) and a bore diameter of up to 100mm.
