Shear Blades for Trumpf, LVD and Haco
Replacement blades for European guillotine shears and shear-punch combination machines. European builders use a deeper, narrower section than most Asian shears and often a different rake angle, so a blade that fits the bed length is still not a blade that fits the machine.
Why the European section is not interchangeable
LVD and Haco shears typically run a section that is taller and thinner than the Asian pattern: the blade sits deeper in the holder and is held by a row of closer-spaced bolts. Two consequences when you buy a replacement:
| Dimension | What it controls | Failure if wrong |
|---|---|---|
| Height (width of bar) | How much blade stands out of the holder | Too tall: clears the hold-down. Too short: cannot be re-ground enough times |
| Thickness | Seat clearance and rigidity | Too thick: will not enter the seat. Too thin: flexes, cuts a bow |
| Bolt pitch | Clamping evenness along the bed | Wrong pitch: local gaps, blade lifts under load, edge chips |
| Rake | Cutting force and strip twist | Set by the machine; the blade edge angle must match the rake, not fight it |
Combination machines: shear blade and punch tooling are separate purchases
On a shear-punch combination machine the shear blade is a long bar at the bottom of the throat, and it wears very differently from press-brake tooling. We make the shear blade, the upper and lower pair, and the sectional replacements for long beds. Punch and die tooling for the press station is a different product — send the drawing if you need both and we will quote them separately rather than bundling a guess.
Stainless and thin sheet: where European shears usually fail
Stainless work-hardens under the blade, so the edge has to be sharper and the clearance tighter than for mild steel. On 1–3 mm 304, run 0.05–0.08 mm clearance and an 86–88° included angle in HRC 58–60. Mild steel at the same thickness wants 0.06–0.10 mm. Using one setting for both is why a shear that cuts mild steel perfectly leaves a burr on stainless.
What to send
| Send this | Detail |
|---|---|
| Machine model and bed length | LVD MV/JS, Haco, Trumpf shear or combination |
| Section | Length × height × thickness, measured on the old blade |
| Fixing photo | With a ruler in frame; bolt pitch and counterbore depth |
| Upper / lower / pair | State which; the lower takes most of the wear |
| Material and thickness range | Sets edge angle, clearance advice and grade |
Send your LVD, Haco or Trumpf blade size
Frequently asked
Do you hold European sections in stock?
Common LVD and Haco sections are held in 6CrW2Si and 9CrSi; unusual heights and thicknesses are made to drawing in 15–25 days.
Can you supply one sectional blade instead of a full set?
Yes, and it is usually the right call. Replacing one worn section is cheaper than a full bar, provided the replacement is ground to the same height as the sections still in service.
What hardness should stainless blades be?
HRC 58–60 in 9CrSi or Cr12MoV. Harder than 62 and the edge micro-chips on work-hardened stainless; softer than 56 and it rolls.
Related: Shearing machine blade overview · Amada, Durma & Yawei · Guillotine knife vs shear blade
Send the section measured on your old blade
Length, height, thickness and a fixing photo is enough. Quote within 24 hours.
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