Slitting Knives & Slitter Blades
Slitting knives divide film, tape, paper, tube, foil, textile and other roll-fed materials into the required widths.
Circular Knife & Slitting Knives
Circular Knife for Industrial Slitting
Custom circular knife and slitting knives for film, tape, paper, tube, foil and other roll materials, with slitter blade options matched to the machine.
The right circular knife starts with the machine, outside diameter, bore or mounting pattern, thickness, material and cutting direction—not a size copied from an unrelated unit. Send a drawing, sample or clear photo with the required quantity for a fit review.
Circular Slitter BladesTop & Bottom KnivesBearing / Pneumatic Options
Send Your Knife Details
Circular Knife, Slitting Knives & Slitter Blades
A circular knife blade is part of a slitting unit. In product catalogs, the same component may also be called a slitter knife, rotary slitting blade or slitting machine blade. The disc, bore, thickness, edge profile and mating holder must still work together with the material and machine setup.
Bearing Knife & Pneumatic Options
Bearing knife and pneumatic knife arrangements require the bore, mounting dimension, holder and cutting position to be checked together.
Large & Metal Circular Knives
Large-diameter circular cutting blades for heavier or metal-related duties still require the correct outside diameter, thickness, material and mounting pattern.
Circular Slitting Knives for Roll Materials
Use the material and converting process as the starting point. The exact knife fit still belongs to the machine unit.
Application 01 / Film & Tape
Slitter Blades for Film & Tape
Roll-fed film, tape and flexible webs where the knife edge, holder and cutting direction need to match the converting unit.
Application 02 / Paper & Tube
Circular Knife for Paper & Tube
Paper rolls and tube-converting lines using a specified outside diameter, bore or mounting detail and thickness.
Application 03 / Textile & Nonwoven
Textile & Nonwoven Slitting
Continuous textile and nonwoven webs where material behavior, edge condition and cutting pressure need review.
Application 04 / Foil & Thin Sheet
Slitting Knives for Foil & Thin Sheet
Thin roll materials requiring a machine-specific knife edge, mounting arrangement and controlled setup.
Application scenes are visual examples. Knife geometry, material grade and holder fit are confirmed from the machine, drawing or sample.
Factory & Machinery Reference
A visual look at the machining and workshop environment behind custom circular-knife production.
Production details are matched to the approved reference
The machine and workshop photos help explain the production context. They are not a substitute for a drawing, a sample or a confirmed inspection requirement.
Machining and grindingReview the required outside profile, mounting opening, thickness and edge condition.
Custom geometryPlain, serrated, multi-hole and other forms are handled as separate fitment cases.
Inspection referenceConfirm the measurable details before production, inspection and delivery.
Circular Knife: Edge and Mounting Forms
These images show examples of the circular knife forms we can review. They illustrate geometry, not a universal fitment standard.
For a precise match, send both faces of the old knife, the holder or arbor photo, key dimensions and the material being cut.
Edge condition
Clean separation depends on the edge geometry, material behavior and the condition of the cutting unit.
Surface and storage
Protect the knife from damage, contamination and unsuitable storage conditions before installation.
Material being cut
Film, tape, paper, tube, textile and foil require different fit and cutting-duty checks.
Custom mounting
Bore, keyway, holes, flat or other mounting details are matched from the approved reference.
What we need to match a circular knife blade
These are the useful quotation inputs. They keep the product selection focused without pretending that one parameter defines the complete knife.
01
Machine and Unit
Brand, model, slitter type and the position of the knife in the cutting unit.
02
Outside Diameter
Measure the outside diameter and note whether the old knife is worn or reground.
03
Bore and Mounting
Confirm bore, keyway, bolt pattern, flat, slot or other mounting feature.
04
Thickness and Edge
Record thickness, plain or serrated edge, bevel and cutting direction where known.
05
Material and Duty
Tell us the material, web or roll form, contamination, speed and cutting condition.
06
Quantity and Delivery
Provide the required quantity, destination and whether a matched knife set is needed.
Circular Knife Blade Drawing: Core Parameters
This original technical reference drawing shows the main dimensions used to review a circular slitting knife. The text beside the image explains the same fields in HTML so the information is clear to both customers and search engines.
Core parameters in this drawing
How to read the circular knife reference
Use these fields when sending a drawing, marked sample or old knife for replacement review.
- D / Outside diameter
- The full diameter across the outside cutting edge.
- d / Bore diameter
- The inside diameter or central mounting opening.
- H / Thickness
- The knife thickness measured through the section view.
- A / Hole-centre distance
- The distance reference used to position the mounting holes.
- B / Hole diameter
- The diameter of each mounting hole; confirm the hole count and pattern separately.
Reference only: these fields do not prove machine fit by themselves. Confirm the holder or arbor, hole layout, edge form, cutting direction and machine model before production.
Best reference: send both faces of the old knife, a side view or thickness photo, the holder or arbor and the machine model. The original drawing is a parameter guide, not a universal interchangeable-size standard.
Circular Knife Blade Parameters, Sizes & Reference Options
The summary fields and complete source-listed size table can start a quotation. They are reference options, not a universal specification table for every machine.
| Reference size as listed | Listed thickness field | Listed material options | Knife size field |
|---|---|---|---|
| 75 × 25.4 × 1 | 1 mm | Tool steel / HSS / tungsten steel | 75 × 25.4 × 1 |
| 80 × 25.4 × 1.2 | 1.2 mm | Tool steel / HSS / tungsten steel | 80 × 25.4 × 1.2 |
| 100 × 25.4 × 1.2/1.5/2 | 1.2/1.5/2 mm | Tool steel / HSS / tungsten steel | 100 × 25.4 × 1.2/1.5/2 |
| 100 × 70 × 1.5 | 1.5 mm | Tool steel / HSS / tungsten steel | 100 × 70 × 1.5 |
| 110 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 110 × 25.4 × 2 |
| 120 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 120 × 25.4 × 2 |
| 130 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 130 × 25.4 × 2 |
| 130 × 80 × 1.2 | 2 mm* | Tool steel / HSS / tungsten steel | 130 × 80 × 1.2 |
| 140 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 140 × 25.4 × 2 |
| 150 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 150 × 25.4 × 2 |
| 160 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 160 × 25.4 × 2 |
| 180 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 180 × 25.4 × 2 |
| 190 × 30 × 4 | 4 mm | Tool steel / HSS / tungsten steel | 190 × 30 × 4 |
| 200 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 200 × 25.4 × 2 |
| 250 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 250 × 25.4 × 2 |
| 300 × 25.4 × 2 | 2 mm | Tool steel / HSS / tungsten steel | 300 × 25.4 × 2 |
| 300 × 25.4 × 3 | 3 mm | Tool steel / HSS / tungsten steel | 300 × 25.4 × 3 |
| 350 × 25.4 × 3 | 3 mm | Tool steel / HSS / tungsten steel | 350 × 25.4 × 3 |
| 400 × 25.4 × 3 | 3 mm | Tool steel / HSS / tungsten steel | 400 × 25.4 × 3 |
| 400 × 25.4 × 4 | 4 mm | Tool steel / HSS / tungsten steel | 400 × 25.4 × 4 |
| 450 × 25.4 × 3 | 3 mm | Tool steel / HSS / tungsten steel | 450 × 25.4 × 3 |
| 450 × 25.4 × 4 | 4 mm | Tool steel / HSS / tungsten steel | 450 × 25.4 × 4 |
| 500 × 25.4 × 3 | 3 mm | Tool steel / HSS / tungsten steel | 500 × 25.4 × 3 |
| 500 × 25.4 × 4 | 4 mm | Tool steel / HSS / tungsten steel | 500 × 25.4 × 4 |
| 600 × 25.4 × 3 | 3 mm | Tool steel / HSS / tungsten steel | 600 × 25.4 × 3 |
| 610 × 68.3 × 3.8 | 3.8 mm | Tool steel / HSS / tungsten steel | 610 × 68.3 × 3.8 |
| 610 × 68.3 × 4.76 | 4.76 mm | Tool steel / HSS / tungsten steel | 610 × 68.3 × 4.76 |
| 680 × 68.3 × 4.76 | 4.76 mm | Tool steel / HSS / tungsten steel | 680 × 68.3 × 4.76 |
*The supplied source row lists 130 × 80 × 1.2 while its separate thickness field says 2 mm. This conflict is intentionally flagged for confirmation before quotation.
Important: the source does not provide verified tolerance, hardness, edge angle, runout, coating, service-life testing or universal machine compatibility. Listing language alone does not establish stainless-steel grade or final material. The final product record follows the approved drawing, sample and quotation.
Material options follow the cutting duty
The source listing names several material options. The actual grade should be confirmed before it is treated as a product specification.
Tool Steel
A possible starting point for general slitting duties, subject to the material, edge requirement and machine condition.
High-Speed Steel
A possible option where the cutting duty and edge-retention requirement support it; confirm the agreed grade and treatment.
Tungsten Steel
A listed material option for selected duties. Confirm the actual composition, geometry and holder before quotation.
Manufacturing process reference
The source images show a typical machining and finishing sequence. The exact operations depend on the approved knife drawing and material.
01 / Blank & Quench
Blank preparation & quenching
Prepare the circular blank and apply the agreed treatment route when it is part of the confirmed requirement.
02 / Rough Turning
Rough machining
Develop the outer profile and mounting area against the approved reference dimensions.
03 / Leveling
Face leveling reference
Level or check the knife face where this operation is part of the approved production route.
04 / Grinding
Surface grinding
Finish the working face and relevant surfaces required by the ordered knife geometry.
05 / Finishing
Final finishing pass
Complete the finishing pass and the specified edge or surface condition where required.
06 / Opening
Opening & mounting work
Machine the opening or mounting detail against the approved drawing, sample or unit requirement.
From an old knife or drawing to a matched replacement
A short review process helps avoid mixing dimensions from different slitting systems.
Step 01 / Review
Send the machine and old-part information
Provide the machine model, unit position, knife photos, drawing, dimensions, material and quantity.
Step 02 / Confirm
Check the geometry and material
We review the outside diameter, bore or mounting, thickness, edge form, material and cutting direction.
Step 03 / Produce and Inspect
Make against the approved reference
Production and inspection follow the confirmed drawing, sample or written requirements.
Custom order flow
Send what you have first. We confirm the missing fitment details before a production reference is approved.
01 / Send
Share the reference
Send a drawing, old knife photo, machine photo and required quantity.
02 / Review
Review dimensions
Check the outside diameter, bore, mounting pattern, thickness and edge form.
03 / Confirm
Confirm the requirement
Align the material option, cutting duty, inspection points and delivery details.
04 / Produce
Make to approval
Produce against the approved drawing, sample or written order reference.
05 / Inspect
Pack and dispatch
Complete the agreed checks, protect the knives and arrange dispatch information.
Circular Knife & Slitting Knife Questions
Short answers to the questions that usually affect fit, material choice and quotation.
Can you make a circular knife from a sample instead of a drawing?
Often yes. Send clear photos of both faces, the old knife or holder, key dimensions and the machine model. The final geometry still needs confirmation before production.
Can one circular knife or slitter blade fit different slitting machines?
Not automatically. Outside diameter alone does not define the fit. Bore, mounting pattern, thickness, edge profile, holder and cutting direction may all be different.
What should I measure on an old slitting knife?
Measure outside diameter, bore or mounting opening, thickness and any keyway, flat, slot or bolt pattern. Note the cutting edge and send photos if the knife is worn.
Can you supply sizes not shown in the reference examples?
Yes, custom sizes can be reviewed. Send the drawing, sample or machine information rather than assuming that a nearby listed size will fit.
Which material should I choose?
The source lists tool steel, high-speed steel and tungsten steel options, but the practical choice depends on the material, edge duty, speed, impact and contamination. Confirm the grade before ordering.
Can you make serrated or multi-hole circular knives?
The source includes plain, serrated and multi-hole examples. The exact tooth form, hole layout and mounting opening must be matched to the approved drawing, sample or slitting unit.
GET IN TOUCH
Need a matched circular knife?
Please prepare the information you already have. The inquiry form is on our Connect Us page.
Helpful information to send
- Machine model or product type
- Key dimensions or mounting details
- Material or application and quantity
- Photo, drawing or old-part image if available