Hardened Screw Locking Knife Holders are precision components designed for shear slitting systems, slitter rewinders, rewinders, and slitting machines. They are used to securely mount dished knives on the upper knife shaft and maintain stable cutting pressure against the bottom knife.
Manufactured from high-strength special steel with hardening heat treatment, these knife holders provide enhanced hardness, strength, and wear resistance for continuous industrial slitting applications.
The holder features a screw-locking and snap-ring retaining system for secure knife mounting. Each holder is supplied with a spring and snap ring, while different spring specifications can be selected according to the material being cut and the required cutting pressure.
WINGCHONG KNIFE can also manufacture matching dished knives, bottom knives, counter sleeves, and related slitting components to provide a complete and dimensionally compatible shear slitting solution.
Hardened special steel construction for improved strength and wear resistance
Screw-locking system for secure knife positioning
Snap-ring retaining system for additional knife retention
Supplied with spring and snap ring
Different spring specifications for various cutting pressures
Designed for dished knives and shear slitting units
Suitable for continuous slitting operations
Custom dimensions available according to drawings and machine specifications
Matching bottom knives and slitting components available

The knife holder is manufactured from high-strength special steel and treated with hardening heat treatment to improve its mechanical performance.
The hardened construction helps the holder withstand the continuous load generated by the spring during operation while providing improved hardness, wear resistance, strength, and dimensional stability.
This makes the holder suitable for demanding slitting applications where stable knife positioning and consistent cutting pressure are essential.
The Hardened Screw Locking Knife Holder uses a screw-locking mechanism together with a snap ring to securely retain the dished knife on the upper knife shaft.
A spring applies controlled pressure between the upper dished knife and the bottom knife. Spring specifications can be selected according to the material type, material thickness, and required cutting pressure.
This configuration helps maintain stable knife contact and supports consistent shear cutting performance during continuous operation.

Dished Knife & Shear Slitting Compatibility
These knife holders are designed to work with dished knives and bottom knives as part of a complete shear slitting unit.
During operation, the dished knife mounted in the upper knife holder works against the bottom knife installed on the bottom knife shaft. The controlled interaction between the two knives produces precise shear cutting of the web material.
The system is suitable for materials such as:
● Paper and paperboard
● Aluminum foil
● Plastic films
● Metal films
● Adhesive tapes
● Flexible laminates
● Composite materials
● Nonwoven materials
Custom Knife Holder Manufacturing
As a custom knife holder manufacturer, WINGCHONG KNIFE can manufacture holders according to customer drawings, samples, machine specifications, and application requirements.
Customization options include:
| Outer Diameter | Inner Diameter | Thickness |
| 62 | 25 | 40 |
| 75 | 30/40 | 40/50 |
| 100 | 45/60 | 65/70/75 |
| 105 | 45/60 | 65/70/75 |
| 130 | 60/80 | 100 |
| 150 | 100 | 120 |
| Material: chrome-alloyed (1.5 % Cr) | ||
● Holder dimensions
● Shaft mounting dimensions
● Knife mounting configuration
● Locking screw specifications
● Snap-ring configuration
● Spring specifications
● Material and hardness
● Dimensional tolerances
For replacement or non-standard applications, customers can provide an existing holder or technical drawing for evaluation and custom manufacturing.
Complete Shear Slitting Components
WINGCHONG KNIFE can manufacture the complete shear slitting unit to ensure dimensional compatibility between individual components.
Available components include:
● Hardened Screw Locking Knife Holders
● Dished Knives
● Bottom Knives
● Counter Sleeves
● Springs
● Related knife shaft components
Matching these components from a single manufacturer can simplify sourcing and help ensure accurate installation and reliable slitting performance.
Hardened Screw Locking Knife Holders are commonly used in:
Slitter rewinders
Rewinding machines
Slitting machines
Shear slitting systems
Paper converting
Flexible packaging
Film and foil processing
Label converting
Nonwoven converting
Custom Manufacturer: Manufactured according to drawings, samples, or machine specifications.
Hardened Steel Construction: Special steel with hardening treatment provides improved strength, hardness, and wear resistance.
Secure Locking System: Screw locking and snap-ring retention help maintain stable knife positioning during operation.
Flexible Spring Options: Spring specifications can be selected according to material and required cutting pressure.
Complete Component Support: Dished knives, bottom knives, counter sleeves, and knife holders can be manufactured as a matched system.
B2B Manufacturing Capability: Suitable for OEM replacement, machine builders, distributors, and industrial slitting users.
Abrasive Cutting Knives are industrial cutting tools specifically designed for cutting abrasive rolls such as sandpaper and abrasive cloth.
Dished knives are circular cutting tools used for shear-type slitting. Unlike completely flat “flat knives,” their blades feature a concave geometric shape (resembling a plate or dish), a design that enables them to generate specific lateral cutting forces during rotational shearing.
Adhesive materials: Self-adhesive labels, adhesive tape, various composite films (die-cutting can create a temporary seal along the cut edges).
Elastic/soft materials: Rubber, non-woven fabric (NWF), textiles, tissue paper.
Abrasive/hard materials: Materials such as sandpaper that can quickly wear down standard sharp blades.