Polar Guillotine Knife Sizes
Polar 66 to 155 guillotine knives, ground in W18Cr4V (T1) or W6Mo5Cr4V2 (M2) to HRC 60–64. The table below lists the lengths we ship most, but every Polar blade is made to your clamp bar — length, thickness and hole pattern included.
Polar models and sizes
| Model | Size L × W × T (mm) | Size (inch) | Notes |
|---|---|---|---|
| 66 | 805 × 95 × 9.7 | 31.69 × 3.74 × 0.38 | |
| 71 / 72 | 868 × 104 × 9.7 | 34.17 × 4.09 × 0.38 | |
| 76 | 925 × 110 × 9.7 | 36.42 × 4.33 × 0.38 | |
| 78 | 960 × 110 × 11.7 | 37.8 × 4.33 × 0.46 | |
| 80 | 990 × 107 × 9.7 | 38.98 × 4.21 × 0.38 | |
| 82 / 86 | 990 × 107 × 11.7 | 38.98 × 4.21 × 0.46 | alternative length 1030 mm also available |
| 88 / 90 | 1030 × 107 × 11.7 | 40.55 × 4.21 × 0.46 | |
| 90 / 92 | 1080 × 115 × 11.7 | 42.52 × 4.53 × 0.46 | alternative length 1095 mm (Polar 92) |
| 115 / 115 X | 1390 × 160 × 13.75 | 54.72 × 6.3 × 0.54 | |
| 137 | 1605 × 160 × 13.75 | 63.19 × 6.3 × 0.54 | |
| 155 | 1785 × 160 × 13.75 | 70.28 × 6.3 × 0.54 |
Three numbers that decide whether a Polar blade fits
| Body thickness | 9.7 mm on 66–80, 11.7 mm on 78–92, 13.75 mm on 115–155. Measure the old blade: the clamp closes on this number. |
| Hole pattern | Several Polar 115 and 137 machines use a five-hole clamp bar. A four-hole blade of the same size will not mount. |
| Length tolerance | The 82 / 86 group uses either 990 or 1030 mm depending on the machine, and the 90 / 92 group either 1080 or 1095 mm. Check before quoting a length. |
Custom Polar blades — made to your clamp bar
from 1 pcIf your Polar is an older model, a rebuilt machine, or a size that no longer appears in any catalogue, we make the blade to the old one. Send the dimensions and the hole layout — or the old blade itself — and we produce a drawing for your approval before grinding.
| What we can change | Options |
|---|---|
| Length | Any length to your drawing — cut from bar and ground to size |
| Width | 90–160 mm |
| Thickness | 9.7 / 10 / 11.7 / 12 / 12.7 / 13.7 / 13.75 mm, or to your measured value |
| Hole pattern | 4-hole, 5-hole, slotted or countersunk — to drawing or sample |
| Edge angle | 20–23° standard, set to your paper grade on request |
| Steel | W18Cr4V (T1) / W6Mo5Cr4V2 (M2), HRC 60–64 |
| Marking | Part number or your brand laser-marked |
| Order size | 1 piece for a trial, batch pricing from 10 pieces |
Frequently asked
Do you make Polar blades in sizes that are not in the table?
Yes. Length, width, thickness and hole pattern are all made to your drawing or to the old blade, from one piece. The table only lists the sizes we grind most often.
Which Polar models do you cover?
66, 71 / 72, 76, 78, 80, 82 / 86, 88 / 90, 90 / 92, 115 / 115 X, 137 and 155. Other Polar models are made to the old blade or to a drawing.
Can you mark my part number on the blade?
Yes. Laser marking of a part number, machine model or your own brand is available on repeat orders.
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