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

Shredder & Crusher Blades Manufacturer

Rotor and counter blades for single-shaft and double-shaft shredders, slow-speed crushers and lump breakers. Tyres, plastic lumps, film bales, wood pallets, drums and scrap — thick sections, impact-tough grades and edge profiles that take shocks without chipping.

Shredder & Crusher Blades — shredder blades, factory direct

Key features

  • Bale-cutter knives to 1,500 mm, sections to 40 mm thick
  • Polished low-drag edges — rubber releases instead of sticking
  • 6CrW2Si for impact, SKD-11 where wear dominates
  • Serrated and wave profiles for grip-free cutting
  • Sets ground and balanced for rotary bias cutters

Specifications

Material6CrW2Si, Cr12MoV, SKD-11, 9CrSi
HardnessHRC 54–60 by application
Lengthup to 1,500 mm
Thicknessup to 40 mm
EdgeStraight, wave, serrated; polished
SurfacePolished; PTFE anti-stick coating option
MOQ1 pc

Applications

Tyre recycling

Car and truck tyre shredding, including steel-belted material.

Plastic recycling

Film bales, lumps, purge and hard plastic scrap.

Rubber processing

Bale cutting and reclaimed rubber crushing knives.

Wood & bulky scrap

Pallets, branches, drums and light metal scrap.

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.

Single-shaft shredder rotor bladesDouble-shaft shredder knivesCounter / stator bladesSlow-speed crusher bladesMachine-side scrap cutter bladesCarbide-inlaid crusher bladesTyre shredding knivesBale cutter knivesLump breaker teeth

Fitting your machine, and buying a replacement

These are replacement blades for plastic and waste shredders and crushers, including machines built around Cumberland, Conair, Herbold, Rapid, Alpine, Pallmann and Vecoplan designs. Rotor knives and counter knives are made as a matched set so the cutting gap stays where the machine expects it. Send the machine model or the old blade and we match the hole pattern, thickness and tooth profile.

Also called: shredder knives · industrial shredder blades · tyre shredding blades · single shaft shredder blades · counter knife · blades compatible with Cumberland · granulator blades compatible with Herbold.

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
9CrSi
HRC 56–60 · Medium-high

Economical and forgiving. Common for large straight knives.

Read the full grade guide
6CrW2Si
HRC 54–58 · Medium

Chosen when chipping is the failure mode, not wear.

Read the full grade guide

Frequently asked questions

Three things, in order: a polished edge (Ra 0.4 μm or better), a slightly larger edge angle so the blade wedges less, and a PTFE anti-stick coating if the compound is tacky. Tell us the compound and temperature and we will pick the combination.
Yes, with a tougher grade and a stronger edge angle. Steel cord eats standard edges — we use 6CrW2Si at HRC 54–58 and a 30°+ bevel for that work.
Yes. Send the drawing or a worn sample. Rotary bias-cutter blades and shaped guillotine knives are routine for us.
Send the machine brand and model, or the old blade with its hole pattern measured. Rotor knives and counter knives must be made as a set — if the counter knife is worn differently from the rotor, replacing only the rotor will not restore the cutting gap.
Chipping is impact, not wear. Either the steel is too hard for the feedstock, or the gap between rotor and counter knife has opened up and material is being forced through. Check the gap first — it is free, and it is the usual cause.

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