📍 Anhui Province, China 📞 +86 155 5177 6915
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Factory Direct

Slitting Line & Rotary Shear Knives Manufacturer

Circular knives, rotary shear blades and matched sets for slitting and cut-to-length lines processing steel, stainless steel, copper, brass and aluminium strip. Sets ground to shim-stack tolerance for burr-free edges at full line speed.

Slitting Line Knives — slitting line knives, factory direct

Key features

  • Knife sets ground as matched sets for your shim stack
  • Outer diameters φ80 – φ1200 mm, thickness 0.5 – 40 mm
  • Cr12MoV / SKD-11 / HSS grades, hardness HRC 58–64
  • Burr-free edges on strip from 0.05 mm foil to 12 mm plate
  • Resharpening service — send worn sets, we restore concentricity

Specifications

MaterialCr12MoV, SKD-11 (D2), HSS M2, carbide inlay option
HardnessHRC 58–64
Outer diameterφ80 – φ1200 mm
Inner boreφ25 – φ400 mm, H7 tolerance
Thickness0.5 – 40 mm
Concentricity≤ 0.01 mm
Flatness≤ 0.005 mm
EdgeSingle bevel, double bevel or flat; ground in matched sets
MOQ1 set

Applications

Steel strip service centers

Slitting lines for hot-rolled and cold-rolled strip.

Stainless & aluminium strip

Precision slitting with clean, burr-free edges.

Copper & brass strip

Electrical and connector strip slitting.

Thin foil & electrode

Light-gauge foil and battery electrode lines.

Blade types we make in this line

A partial list — if you do not see your blade, send us the drawing or a photo and we will confirm.

Slitting line circular knivesRotary shear bladesKnife spacers & shim setsCut-to-length bladesHot shearing bladesBillet shearing knivesStrip slitting knife sets

Fitting your machine, and buying a replacement

Slitting line tooling is supplied blade by blade or as a complete set — knives, separator discs, spacers and shims, matched to the arbor bore so the set goes on the shaft without adjustment. We work from your line drawing or from the existing tooling.

Also called: coil slitter blade · rotary shear blades · cut-to-length blades · slitting line tooling · separator discs and shims.

Materials used for this blade

Cr12MoV
HRC 58–62 · High

Widely used, well understood grade. Good balance of cost and life.

Read the full grade guide
SKD-11 (D2)
HRC 60–64 · Very high

Longer life than Cr12MoV at higher cost. The default upgrade.

Read the full grade guide
HSS M2 / M42
HRC 62–66 · Very high

M42 (cobalt) for heat resistance at very high line speeds.

Read the full grade guide

Frequently asked questions

Three factors decide the burr: knife sharpness, the horizontal and vertical clearance between upper and lower knives, and knife run-out. We grind matched sets so the whole set runs true in your stack — you set the clearances once per thickness and the edges stay clean.
Yes. Give us OD, ID, thickness and edge angle of one knife (or send a sample), and we confirm the drawing with you before production. Mixed sets — a few new knives blended with your used ones — are routine work for us.
It depends on the material and the coating. Cr12MoV on mild steel strip typically runs several hours between regrinds; HSS and carbide-inlaid knives last far longer on stainless and abrasive strip. Send us your strip specification and line speed and we will recommend a grade.
Yes. A slitting line is only as accurate as its spacer stack, so we quote the knives, separator discs, spacers and shims together and grind them for the same bore and face runout.
Send the line drawing or the existing tooling dimensions: outside diameter, bore, thickness, number of knives and the spacer sequence. We quote the whole stack, not just the blades.

Not sure which blade fits?

Send a photo of the blade you use now with a ruler next to it. We will tell you the grade and the edge angle.

Ask us