Knife Shafts for Machine Knives

Knife shafts are precision machine components used in industrial cutting and slitting systems. They serve as support and drive shafts for circular knives, slitting knives and knife holders and are designed to maintain accurate positioning and reliable rotation during the cutting process.
High dimensional accuracy and concentricity are essential for knife shafts, particularly in high-speed slitting and cutting applications.
Knife Shafts for Circular Knives
Circular knives are mounted on knife shafts using suitable knife holders, spacers and intermediate rings. The position and spacing of the individual knives can be adjusted according to the required cutting width.
A typical slitting system for paper, film or other web materials consists of:

Knife shaft Circular or slitting knives Knife holders Spacers or intermediate rings Counter knives or anvil components, depending on the cutting system

The exact configuration depends on the machine and cutting process.
Knife Shafts for Slitting Systems
Knife shafts are widely used in industrial slitting and web-processing machines. They support multiple circular knives and allow several cuts to be made across a continuous web of material.
Applications include:

• Paper and cardboard
• Films and foils
• Plastics
• Packaging materials
• Nonwovens and textiles
• Other flexible web materials

Accurate knife positioning is important for maintaining the required cutting widths and consistent production quality.
Precision Manufacturing of Knife Shafts
Knife shafts are precision components that must meet the dimensional and rotational requirements of the respective machine.
Important manufacturing characteristics include:

• High concentricity
• Accurate shaft diameter
• Precise tolerances
• Correct mounting dimensions
• Suitable surface finish
• Accurate positioning of knife seats and components

The shaft design is adapted to the machine, knife system and required cutting configuration.
Knife Shafts, Spacers and Knife Holders
The distance between individual circular knives can be adjusted using spacers or intermediate rings. Knife holders secure the circular knives on the shaft and ensure stable positioning during operation.
The correct combination of shaft, knife holder, spacer and circular knife is essential for reliable slitting performance.
Custom Knife Shafts
We manufacture custom knife shafts according to customer drawings, specifications or samples. Shaft dimensions, mounting features, knife positions and tolerances can be adapted to the individual cutting system.
Knife shafts can be manufactured for new machines as well as replacement or refurbishment applications.
If you require precision knife shafts for circular knives, slitting knives or industrial cutting systems, send us your drawing, sample or technical specifications. We will be happy to discuss the required shaft design and dimensions.