VORWALD Friction and Knife Shafts
Pneumatic knife shaft
By virtue of their continuous expanding ledges Vorwald knife shafts of the Series 405 L are suitable for use with the widest as well as the narrowest circular knives or knife bushings for longitudinal web cutting. The knife shaft transfers a very large torque together with exceptionally high positioning accuracy. This economical and flexible shaft has an expansion system which is easily accessible externally and is available in nearly all sizes. The carrier body is made of hard chrome plated steel with a ground surface fulfilling the highest demands for quality and true running. The shaft journals are also made of steel and can be manufactured to customer specifications.
Advantages
- Central clamping with precision guiding
- Highest true running accuracy
- Surface hard chrome plated and ground
- Quick and accurate locking of the knife bushings
- Easy to maintain
- Suitable for manual or automated operation
- Almost any shaft diameter can be delivered
Pneumatic friction shaft
Vorwald friction shafts of the Series 404 are recommended for winding processes with longitudinal web cutting of narrow and stretch-sensitive products. The friction shafts permit exact compliance with the tensional force specification, even with difficult materials.
Advantages
- Short set-up times for reel changing
- Low maintenance
- Various friction ring designs available
- Large range of different reel widths can be wound on the same shaft
- Shaft body is chrome plated and ground
- No dust produced by the core due to friction
- Suitable for a very wide range of web widths
- Reel take-off can be automated
