Knife Ring UM140/80
Shear-cut knife ring UM140/80
These standard knife rings are part of our cutting-system modular range. If you need other dimensions, please send us your enquiry.
We support the assemblies and machines we supply throughout their entire life cycle. Spare parts and assemblies for our standardised winding-technology modular system are usually available from stock.
Unit price net: €133.91 · plus VAT and shipping costs
Responsible economic operator: Grossmann GmbH i. Gr., Am Waggonbau 12, 06844 Dessau-Roßlau · Details in the legal notice
Description
In shear cutting the web contacts knife rings in the direction of web travel. These are mounted on a driven roller. The circumferential speed of the knife rings is 3 % to 5 % higher than the web speed.
Knife holders are mounted on the opposite side. The vertical stroke axis dips the shear-cut circular blade through the web, which then moves a short horizontal distance to rest face-on against the knife ring. Overlap between knife ring and circular blade is 0.5 mm to 1 mm.
Shear-cut knife rings are clamped directly onto the cutting rollers. Their surfaces are therefore hardened and ground to high precision.
For cutting heavy webs (e.g. thick aluminium foils and laminates), two knife shafts with overlapping knife rings are suitable.
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