MRA 4 - Motor belt drive

Application

The MRA 4 motorised belt drive – high-performance servo motors set new standards and replace the quality adjustment pulleys.

The operating terminal controls the speed and therefore the adjustment of the yarn supply quantity for each drive belt, guaranteeing a constant yarn supply quantity and leading to a significantly improved fabric quality. The elimination of the quality adjustment pulleys drastically reduces set-up times and considerably
increases the efficiency of the circular knitting machine. 

Thanks to the new high-performance servo motors, the number of necessary servo motors can be reduced depending on the machine design, which significantly decreases the return on investment.
 

MRA 4 can be fitted to circular knitting machines.

Main features

• More powerful motors, which make the operation of a larger number of devices possible
• Precise adherence to mesh sizes, which is not achievable by conventional means
• Improved fabric quality due to a consistent, programmed yarn input quantity for all stitch rows
• Higher productivity at lower costs due to shorter set-up times and avoidance of potential sources of error with mechanical adjustment
• Drastically reduced set-up times: readjustments or changes in less than a minute. Previously 10 to 20 minutes for quality adjustment pulleys
• Fast recovery in case of fabric fall due to a reduction in the yarn supply quantity
• More flexibility: in the case of S and Z yarns, feeders are operated both clockwise and anticlockwise