Flat Rotary Knives for Paper Tube, Tape and Strapping
These flat circular slitter blades are used for paper tubes and cores, adhesive tape rolls, strapping, paperboard, rubber sheet, plastic film and related converting materials. Diameter, bore, thickness, keyways, holes and bevel are manufactured to the approved machine and application specification.
Product Specifications
These specifications summarize the product configuration. Final dimensions, material, hardness, edge geometry, and other requirements are confirmed according to the approved drawing and cutting application.
| Item | Specification |
|---|---|
| Product Type | Flat circular slitter blade / flat rotary knife |
| Material Options | High-speed steel, tool steel, stainless steel, tungsten carbide, and application-specific grades |
| Hardness | Selected according to blade material and operating conditions |
| Surface Finish | Precision-ground |
| Edge Type | Single bevel or double bevel, according to the approved drawing and cutting application |
| Optional Coatings | TiN, TiCN, DLC, or other suitable application-specific coatings |
| Customization | Outside diameter, bore, thickness, keyways, holes, edge geometry, material, hardness, surface finish, and coating |
| OEM / ODM | Supported |
| Application | Paper tubes and cores, adhesive tape rolls, strapping and bundled strip materials, paperboard, rubber sheet, plastic film, and nonwoven materials |
| MOQ | Flexible; confirmed by product type, material, and order quantity |
Standard Sizes & Dimensions
| Outside Diameter D1 (mm) | Inside Diameter D2 (mm) | Thickness S1 (mm) |
|---|---|---|
| 80 | 25.4 | 1.5 |
| 100 | 25.4 | 1.5 |
| 130 | 25.4 | 2 |
| 150 | 25.4 | 2 |
| 180 | 25.4 | 2 |
| 200 | 25.4 / 32 | 2 |
| 250 | 25.4 / 32 | 2 |
| 300 | 25.4 / 32 | 2 / 2.5 |
| 350 | 25.4 / 32 | 2.5 / 3 |
| 400 | 25.4 / 32 | 3 / 4 |
| 450 | 25.4 / 32 | 3 / 4 |
| 500 | 25.4 / 32 | 3 / 4 |
Customization & Service
| Model | Custom flat circular slitter blade |
|---|---|
| Service | Drawing- and sample-based custom manufacturing |
How Buyers Describe and Specify This Blade
Industrial teams often use several names for the same blade family. We use those terms to identify the likely application, then confirm the final design from the drawing, sample and machine conditions.
Size and geometry. The terms “custom flat rotary slitter knife”, “custom OD and ID circular blade” and “single bevel flat slitter blade” usually describe geometry or configuration. Requests using “double bevel circular slitter knife” or “paper core cutting circular knife” should confirm critical dimensions and edge orientation.
Application and equipment. Buyers may search for “rotary knife for adhesive tape cutting”, “tape roll slitting blade” or “circular blade for strapping cutting” when identifying an application. For requests described as “rotary blade for paperboard cutting” or “adhesive tape log slitter knife”, include the processed material, machine interface and required cut quality.
Custom and replacement supply. Sourcing language can include “circular knife for rubber sheet cutting”, “nonwoven rotary slitter blade” or “replacement blade for converting machine”. Requests using “custom circular knife manufacturer” or “OEM flat slitter blade from drawing” should include an approved drawing or sample details before production.
The approved drawing and application conditions always control the manufactured blade specification.
How to Specify a Flat Circular Slitter Blade
- Confirm outside diameter, bore, thickness, keyway or mounting-hole layout and rotation direction.
- Describe whether the blade cuts paper tube, adhesive tape, strapping, film or another material.
- State the preferred single- or double-bevel geometry and any runout or flatness requirement.
- Send a drawing or sample details when replacing an existing rotary knife.
Compare related circular blades, or review the custom industrial knife manufacturing process before sending your drawing, sample details and required quantity.