SERVO DRAFT provides highly dynamic compensation of deviations from the target sliver weight. To achieve this degree of short-term levelling, which cannot be realised with conventional concepts, SERVO DRAFT uses special drives, determines precise actual values, ensures fault-free signal processing and direct conversion of the levelling signal.

The new groove and sensing roll unit DISC LEVELLER

The sensor is based on friction-free, fiber-friendly measurement. It allows a very high, adjustable pressure at the measuring point, thus the deviations in material thickness must be placed on the same level as the actual mass deviations. The sensor features maximum accuracy and signal quality, without interference from external sources. Translating these signals into draft changes with SERVO DRAFT results in a perfectly levelled sliver and consistent sliver count stability. DISC LEVELLER is equipped with a new, permanently lubricated bearing that features a more rigid design than conventional constructions; nevertheless, it allows quick and simple replacement of the groove and sensing rolls during lot change.