Screw Locking Knife Holders are precision components designed for shear slitting systems, rewinders, slitter rewinders, and slitting machines. They securely mount dished knives on the upper knife shaft and maintain stable knife positioning during operation.
Manufactured from high-strength special steel, the holders receive specialized surface treatment to improve corrosion resistance and wear resistance, supporting reliable performance in continuous slitting applications.
Each holder is supplied with a spring and snap ring. Spring specifications can be selected according to the cutting application, including spring length, wire diameter, and operating tension. The appropriate dished knife geometry and steel grade should also be selected according to the material being processed.
The knife holder and dished knife form the upper section of a shear slitting unit, working against the bottom knife installed on the bottom shaft to achieve precise and stable shear cutting.
High-strength special steel construction
Specialized surface treatment for improved corrosion and wear resistance
Secure screw-locking mechanism for stable knife positioning
Supplied with spring and snap ring
Spring specifications can be selected for different cutting pressures
Designed for dished knives and shear slitting systems
Suitable for a wide range of web materials
Custom dimensions available according to drawings or machine specifications
Complete shear slitting components available
The locking screw securely fixes the knife holder to the upper knife shaft and helps maintain consistent knife positioning during slitting.
The holder is supplied with a spring and snap ring. Proper spring selection is important for maintaining the required cutting pressure between the dished knife and bottom knife.
Spring specifications can be selected according to:
● Spring length
● Wire diameter
● Operating tension
● Material thickness
● Required cutting pressure
Selecting the appropriate spring together with the correct dished knife geometry helps achieve stable and consistent cutting performance.
Screw Locking Knife Holders are designed to work with dished knives and bottom knives as part of a complete shear slitting system.
During operation, the dished knife mounted in the upper holder works against the bottom knife installed on the bottom shaft. The controlled cutting pressure between the two knives produces a clean and stable shear cut.
The system can be used for processing:
● Aluminum foil
● Paper and paperboard
● Plastic films
● Metal films
● Flexible laminates
● Adhesive materials
● Nonwoven materials
The dished knife geometry and steel grade should be selected according to the material type, thickness, and cutting conditions.
As a custom knife holder manufacturer, WINGCHONG KNIFE can manufacture Screw Locking Knife 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
● Spring specifications
● Snap-ring configuration
● Material and surface treatment
● Dimensional tolerances
Custom manufacturing is available for OEM replacement parts, non-standard slitting systems, machine builders, and industrial users.
WINGCHONG KNIFE manufactures the complete shear slitting unit, including:
● Screw Locking Knife Holders
● Dished Knives
● Bottom Knives
● Springs
● Snap Rings
● Related shaft components
Manufacturing the matching components together helps ensure precise dimensional compatibility, reliable installation, and consistent slitting performance.
Applications
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
Maintenance & Performance
Regular inspection of the knife holder and spring helps maintain consistent slitting performance.
Wear in the knife seating area may affect knife positioning and lead to uneven or imperfect cuts. The spring should also be checked regularly to ensure consistent cutting pressure between the dished knife and bottom knife.
Proper maintenance of the locking screw, knife seating area, spring, and snap ring helps maintain stable knife positioning and reliable cutting performance.
Custom Manufacturer: Manufactured according to drawings, samples, or machine specifications.
High-Strength Construction: Special steel provides reliable strength for demanding slitting applications.
Secure Screw Locking: Locking screw and snap-ring retention help maintain stable knife positioning.
Flexible Spring Options: Spring specifications can be selected according to material and required cutting pressure.
Complete Component Support: Dished knives, bottom knives, springs, and knife holders can be supplied 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.
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