45° Crush Cutting Knives are precision-manufactured slitting knives designed for slitter rewinders, flexographic printing machines, inspection equipment, and integrated slitting systems. The 45-degree cutting edge provides reliable crush-cutting performance for a wide range of lightweight and flexible web materials.
They are suitable for cutting lightweight paperboard, adhesive tapes, labels, metal foils, laminates, flexible composites, and nonwoven materials (NWF). Standard knife diameters range from 35 mm to 180 mm, while custom dimensions can be manufactured according to customer drawings, machine specifications, and application requirements.
WINGCHONG KNIFE manufactures custom crush cutting knives using high-quality tool steel, high-chromium steel, and other suitable steel grades selected according to the material and cutting conditions.
45° precision cutting edge for controlled crush cutting
Standard diameters from 35 mm to 180 mm
Rounded and serrated edge profiles available
Suitable for paperboard, films, labels, tapes, laminates, and nonwoven materials
Tool steel and high-chromium steel options
Custom dimensions and tolerances available
Compatible with major pneumatic knife holders
Custom counter sleeves and bottom shaft components available
45° Crush Cutting Knives are suitable for:
Lightweight paper and paperboard
Adhesive tapes
Labels
Plastic and metal films
Flexible laminates
Composite materials
Nonwoven fabrics (NWF)
The knife material and edge geometry can be selected according to the material thickness, hardness, and cutting characteristics.
As a custom slitting knife manufacturer, WINGCHONG KNIFE manufactures crush cutting knives according to your machine and application requirements.
Customization options include:
| Inner Diameter | Thickness |
| 25/30 | 5/10/15/20/25 |
| 25/40 | 5/10/15/20/25 |
| 25/40 | 5/10/15/20/25 |
| 45/60 | 5/10/15/20/25 |
| 60 | 5/10/15/20/25 |
| 60 | 5/10/15/20/25 |
| 60 | 5/10/15/20/25 |
| 80/90 | 5/10/15/20/25 |
| 100 / 120 | 5/10/15/20/25 |
| 150 / 160 / 210 | 5/10/15/20/25 |
| 150 / 160 / 210 | 5/10/15/20/25 |
| 150 / 160 / 210 | 5/10/15/20/25 |
| 245 | |
| 250 / 270 | |
| 310 | |
| 360 | |
| 410 | |
| 450 | |
| Material: 1.2379、chrome-alloyed (1.5 % Cr), high-chrome-alloyed tool steels (12 % Cr) | |
● Knife diameter
● Bore diameter
● Knife thickness
● Cutting angle
● Edge profile
● Rounded or serrated edge
● Steel grade
● Surface finish
● Dimensional tolerances
Although 45° is the primary cutting angle of this knife series, 30° and 60° cutting angles can also be manufactured for applications requiring different cutting geometries.

These 45° Crush Cutting Knives are designed for use with pneumatic knife holders and slitting systems used in printing, converting, and web-processing applications.
For complete system compatibility, WINGCHONG KNIFE can also manufacture custom counter sleeves, bottom knife shaft components, and related slitting accessories according to customer drawings and equipment specifications.

45° Crush Cutting Knives are commonly used in:
● Slitter rewinders
● Flexographic printing machines
● Inspection machines
● Integrated slitting systems
● Label converting
● Flexible packaging
● Adhesive tape converting
● Film and foil processing
● Nonwoven converting
Custom Manufacturer: Manufactured according to drawings, samples, or machine specifications.
Precision Cutting Geometry: 45° edges provide controlled cutting performance for different web materials.
Flexible Edge Profiles: Rounded and serrated edge designs are available.
Material Selection: Tool steel, high-chromium steel, and other suitable grades can be specified.
Complete Component Support: Counter sleeves and bottom shaft components can be manufactured to match your slitting system.
B2B Manufacturing Capability: Suitable for OEM replacement, machine builders, distributors, and industrial 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.