The new Roba capping head components are based on the patented Roba-contitorque hysteresis clutch that has been used for various applications for over 10 years.
Mayr adapted the technology to the capping market because it saw an opportunity to overcome some of the drawbacks of existing options.
Repetition
For example, the German engineering firm claims that hysteresis helps tackle the variations in production associated with permanent magnetic heads.
These variations are caused during slipping when the clutch pulls away and can compromise product quality resulting in caps that are a struggle to open or that are applied too loosely causing loss of fizz in carbonated drinks.
By contrast Mayr claims its Roba capping heads are far more constant and have a torque repetitive accuracy of +/- 2 per cent in ambient conditions.
Maintenance costs
In addition, the company said the capping device removes the hammering effect of permanent magnetic heads, therefore reducing maintenance costs. And in comparison with frictional clutches that are still used by some glass bottlers, maintenance costs are lowered because of the lack of frictional moving parts.
No expensive servicing of the capping head components is required. The bottler can carry out any necessary maintenance tasks such as re-greasing guides or replacing bearings themselves.
A spokesperson for Mayr said the Roba system can be installed on standard machinery with help of adaptors and is suitable for any cap style or size.