Industrial Blade Size Chart: OD, ID, Thickness & Edge Angle
Every size on this page is a dimension we actually grind, taken from the specification tables of our own product pages rather than copied from a catalogue. Use it to check whether a standard blade already covers your machine, to identify a blade you have in your hand, or to decide what to put on a drawing before you ask for a quote.
1. The four numbers that define an industrial blade
Almost every blade enquiry comes down to the same handful of dimensions. If you can supply these, we can quote without a drawing in most cases.
| Dimension | What it is | Why it decides whether the blade fits |
|---|---|---|
| OD (outer diameter) | Measured across the cutting edge, not across a worn or chipped section | Sets the surface speed on slitting and sheeting lines, and the depth of cut on circular knives |
| ID / bore | The centre hole, including keyway, drive pin holes or a three-hole pattern | Must match the shaft or arbor; a bore that is even slightly loose is the usual cause of blade wobble and poor cut quality |
| Thickness | The plate thickness, measured away from the bevel | Controls stiffness and the gap you set against the anvil or the lower blade |
| Edge angle | The included angle of the bevel, in degrees | Thin film wants a thin, sharp bevel; board and recycled fibre want a blunter, stronger edge |
| Tooth pitch | Distance between tooth tips, in mm or TPI | Sets the finish on serrated and toothed blades; too coarse tears the web, too fine loads the drive |
When a drawing shows only two numbers, they are almost always OD and ID. Thickness and edge angle are the two variables we can adjust for you without changing the blade’s fit — so if the outer diameter and the bore match, the blade is usually makeable.
2. Circular slitter blades: OD × ID × thickness
This is the largest family on the site and the one where buyers most often ask for a size by number. The three tables below cover light slitting knives, large round blades for sheeting lines, and the heavier lower blades that sit under a slitting shaft.
2.1 Slitting knives up to 200 mm OD
| OD | ID | Thickness | Typical duty |
|---|---|---|---|
| 60 mm | 16 mm | 0.8 mm | Narrow-web film and tape |
| 70 mm | 20 mm | 1.0 mm | Film, label stock |
| 80 mm | 22 mm | 1.2 mm | Film, foil |
| 90 mm | 25 mm | 1.5 mm | Paper, foil |
| 100 mm | 30 mm | 2.0 mm | Paper, light board |
| 110 mm | 35 mm | 2.5 mm | Board, nonwoven |
| 125 mm | 40 mm | 3.0 mm | Paper, board |
| 150 mm | 50 mm | 3.0 mm | Paper, film |
| 180 mm | 55 mm | 3.0 mm | Board, nonwoven |
| 200 mm | 60 mm | 3.0 mm | Heavy board |
Standard sizes held for slitting knives — see the full product page.
2.2 Large round blades, 150 to 680 mm OD
Above 400 mm the blades move onto a heavier arbor, and the standard bore on this range changes with it: from 500 mm upward it is 68.3 mm rather than 25.4 mm.
| OD | ID | Thickness |
|---|---|---|
| 150 mm | 25.4 mm | 1.8 mm |
| 160 mm | 25.4 mm | 2.0 mm |
| 180 mm | 25.4 mm | 2.0 mm |
| 200 mm | 25.4 mm | 2.0 mm |
| 250 mm | 25.4 mm | 2.5 mm |
| 300 mm | 25.4 mm | 2.8 mm |
| 350 mm | 25.4 mm | 2.8 mm |
| 400 mm | 25.4 mm | 3.0 mm |
| 500 mm | 68.3 mm | 3.8 mm |
| 610 mm | 68.26 mm | 3.8 mm |
| 680 mm | 68.3 mm | 4.76 mm |
Large round slitting blades — product page and material options.
2.3 Lower slitting blades (anvil side)
Lower blades are thicker because they carry the cut rather than initiate it, and they are usually supplied in pairs of thicknesses so the same OD can be set up for different web gauges.
| OD | ID | Thickness options |
|---|---|---|
| 50 mm | 25 mm | 8 / 10 mm |
| 60 mm | 35 mm | 10 / 12 mm |
| 70 mm | 28 mm | 12 / 14 mm |
| 70 mm | 45 mm | 3 / 5 · 8 / 10 · 20 mm |
| 80 mm | 50 mm | 8 / 10 · 20 mm |
| 80 mm | 60 mm | 8 / 10 · 20 mm |
| 90 mm | 60 mm | 3 / 5 · 8 / 10 · 20 mm |
| 90 mm | 65 mm | 3 / 5 · 8 / 10 · 20 mm |
| 100 mm | 70 mm | 8 / 10 · 20 mm |
| 105 mm | 80 mm | 8 / 10 mm |
An extract of the 21 combinations listed on the lower blade page.
3. Doctor blades: width × thickness × coil length
Doctor blades are specified by width and thickness, not by diameter. The width is set by the blade holder on your press; the thickness is set by the ink or coating you run and by how much pressure the holder can apply.
| Width | Thickness options | Standard coil |
|---|---|---|
| 10 mm | 0.15 mm | 100 m |
| 30 mm | 0.15 mm · 0.20 mm | 100 m |
| 35 mm | 0.15 mm · 0.20 mm | 100 m |
| 40 mm | 0.15 mm · 0.20 mm | 100 m |
| 50 mm | 0.15 mm · 0.20 mm | 100 m |
| 60 mm | 0.15 mm · 0.20 mm | 100 m |
Carbon steel doctor blade range — SC series product page.
0.15 mm is the workhorse thickness. It is the blade most gravure and flexo presses are set up for, and it is the thickness we hold in the widest range of widths. Step up to 0.20 mm when the holder needs more beam strength — long spans, high press speeds, or a holder that cannot be set close to the impression roller.
The ceramic-coated LongLife blades use a slightly different base thickness, because the coating adds to the overall dimension. Coating thickness is 10–15 µm on top of the base strip, so the blade is ordered on base thickness and finishes marginally thicker.
| Width | Base thickness | Coil |
|---|---|---|
| 10 mm | 0.152 mm | 100 m |
| 20 mm | 0.152 mm | 100 m |
| 30 mm | 0.152 mm · 0.203 mm | 100 m |
| 35 mm | 0.152 mm | 100 m |
| 40 mm | 0.203 mm | 100 m |
| 50 mm | 0.203 mm | 100 m |
| 60 mm | 0.203 mm | 100 m |
Ceramic-coated range — LongLife doctor blade.
4. Oscillating and CNC cutter blades: L × W × T
Oscillating blades are the one family where the size alone does not identify the part — the same 38 × 6.35 mm outline exists in three thicknesses with three different edge angles, and each one is a different holder and a different material. The model code is the reliable identifier, which is why the tables on this site are built around codes rather than sizes.
| Platform | Model range | Thickness stock | Profiles listed |
|---|---|---|---|
| Zünd | Z1 – Z104 | 0.63 · 1.0 · 1.5 mm | 35 |
| JWEI | J303 – J603 | 0.63 · 0.64 · 1.0 mm | 36 |
| AOL | C · LC · T · Y · Z · ZP · ZS | 0.63 · 1.0 mm | 49 |
Below are the sizes that cross more than one platform. If your blade measures one of these, there is a good chance it is already a stock profile rather than a special.
| Size (L {P} W {P} T) | Where it appears |
|---|---|
| 22 × 5.5 × 0.63 mm | JWEI J322, J603 |
| 25 × 4 × 0.63 mm | Zünd Z20, Z22 |
| 25 × 5.5 × 0.64 mm | JWEI J311-1 |
| 25 × 8 × 0.63 mm | AOL Y025a |
| 28 × 8 × 0.63 mm | AOL Y028a, Y028a-1, Y028b |
| 30 × 6.3 × 0.63 mm | AOL Z015a through Z060a |
| 33 × 5.5 × 1.0 mm | AOL T133 |
| 38 × 4 × 0.63 mm | Zünd Z28 · AOL C038b-4, LC038b-4 |
| 38 × 6.35 × 1.0 mm | JWEI J304, J316 |
| 50 × 8 × 1.5 mm | Zünd Z10–Z13, Z44, Z45, Z71, Z101 |
Full model-by-model tables live on the machine cross-reference page.
5. Granulator and shredder blades: L × W × T
Granulator knives are quoted as a set, not as a single blade: the fixed (bed) knives and the rotary knives on a rotor are dimensioned to work together, and mixing sizes between the two changes the cutting clearance.
| Machine size | Fixed knife | Rotary knife |
|---|---|---|
| PC300 | 298 × 80 × 17 mm (2 pcs) | 99.5 × 80 × 17 mm (9 pcs) |
| PC360 | 358 × 110 × 15 mm (2 pcs) | 60 × 70 × 15 mm (18 pcs) |
| PC400 | 398 × 80 × 17 mm (2 pcs) | 99.5 × 80 × 17 mm (12 pcs) |
| PC470 | 234 × 90 × 20 mm (2 pcs) | 94 × 85 × 17 mm (15 pcs) |
| PC500 | 498 × 85 × 17 mm (2 pcs) | 99.5 × 85 × 17 mm (15 pcs) |
| PC600 | 298 × 80 × 17 mm (4 pcs) | 99.5 × 80 × 17 mm (18 pcs) |
Set compositions from the recycling shredder blade page; the full range is on the granulator blades series page.
6. Serrated, toothed and V-grooving blades
For these families the length, width and thickness narrow the field, but the tooth form does the real work — two blades with identical outline dimensions cut completely differently if the pitch or the tooth height differs.
6.1 Serrated blades for packaging machines
| Length | Width | Thickness |
|---|---|---|
| 135 mm | 10 mm | 4.0 mm |
| 160 mm | 10 mm | 3.8 mm |
| 185 mm | 14 mm | 5.0 mm |
| 200 mm | 10 mm | 5.0 mm |
| 220 mm | 20 mm | 5.0 mm |
| 270 mm | 20 mm | 5.0 mm |
6.2 Tungsten carbide toothed and slitting blades
| Length | Width | Thickness |
|---|---|---|
| 30 mm | 9 mm | 0.4 mm |
| 30 mm | 6 mm | 0.5 mm |
| 38 mm | 8 mm | 0.25 mm |
| 40 mm | 10 mm | 0.5 mm |
| 43 mm | 22 mm | 0.3 mm |
| 57 mm | 11 mm | 0.5 mm |
| 60 mm | 22 mm | 0.4 mm |
Carbide range from the tungsten carbide slitter blade page.
6.3 V-grooving blades for rigid board
| Length | Width | Thickness |
|---|---|---|
| 40 mm | 12 mm | 2.0 mm |
| 45 mm | 12 mm | 2.0 mm |
| 45 mm | 14 mm | 2.0 mm |
| 45 mm | 15 mm | 2.0 mm |
| 50 mm | 15 mm | 2.0 mm |
| 60 mm | 15 mm | 2.0 mm |
6.4 Food-grade and bread slicer blades
| Length | Width | Thickness |
|---|---|---|
| 275 mm | 11 mm | 0.4 mm |
| 284 mm | 7 mm | 0.4 mm |
| 300 mm | 11 mm | 0.4 mm |
| 300 mm | 7 mm | 0.4 mm |
Stainless bread slicer blades.
7. How to measure a worn blade you cannot identify
- Lay the blade flat and measure the full outer diameter across the widest point. Do not measure across a chipped or worn section — you will read the wear, not the blade.
- Measure the bore with a caliper in two directions at 90 degrees. If it is keyed, note the keyway width and where it sits relative to the drive pins.
- Measure thickness in three places around the rim. If the rim is thinner than the centre, the blade has been sharpened back and your replacement will sit differently.
- For toothed blades, count the teeth and measure the pitch — the distance from tip to tip, or teeth per inch if the pitch is fine.
- Photograph the blade flat with a ruler lying across it, and write down any stamped numbers. Machine builders stamp part numbers on most oscillating blades, and those codes cross-reference faster than any measurement.
8. What to send with an enquiry
- A drawing — DXF, PDF or STEP, with the dimensions that matter to you marked.
- Or a worn sample — we measure it and send the reading back before quoting, so you can correct us if we have misread something.
- Machine make and model, if the blade fits a known platform. A model code plus a thickness is often enough on its own.
- What you are cutting — material, thickness and web speed. This decides the edge angle and the grade, which is where most of the life is won or lost.
- Current life — how many hours, tonnes or impressions you get from a blade now. It tells us whether you need a tougher grade or a sharper one.
Frequently asked questions
Yes. Almost everything we ship is made to a drawing, and the tables here are the standard sizes that come up often enough to hold — not the limit of what the machines can do. Send the drawing or a sample and we will quote the special alongside the nearest standard, so you can compare.
What is the difference between 0.63 mm and 1.0 mm oscillating blades?The holder. 0.63 mm blades are the light series used on most digital cutters for film, paper, vinyl and thin foam. 1.0 mm blades take more side load and are used where the material is thicker or the cut is more aggressive. 1.5 mm appears on the heavy Z-series profiles used for rigid board and composites. The thickness has to match the holder, so it is not a free choice.
Do doctor blades come in coils or cut lengths?Both. Standard supply is a 100 m coil, which is what most presses with a bulk ink system use. We also cut to length where the holder takes a fixed blade, and we can supply the strip with the bevel already ground to your angle.
Which thickness doctor blade do I need?Start at 0.15 mm. It is what the majority of gravure and flexo presses are set up for. Move to 0.20 mm if the holder spans a long distance, if you run at high speed, or if you are seeing the blade flex away from the roller and leave a film of ink behind.
How quickly can you quote from a size?If the blade is a standard size on this page, usually within one working day. For a special, we quote after we have the drawing or the sample, because the grade and the edge geometry are part of the price and we would rather quote once, correctly.
Send the size, get a straight answer
Give us the OD and the bore, or the model code and thickness, and we will tell you whether it is a stock profile or a new grind — with the grade and edge angle we would recommend for your material.
Request a quote