Rotor knife systems
SINGLE-SHAFT SHREDDER BLADES.
Square and profile rotor knives, stationary bed knives and counter knives for single-rotor shredders.
What to specify
Fit, edge geometry and fastening details matter.
Single-shaft systems often use multiple small rotor knives against one or more stationary knives. Small differences in seat angle or hole geometry can affect cutting clearance.
- Overall length, width and thickness
- Bolt-hole size, countersink and center distance
- Number of usable edges and edge angle
- Rotor position or knife layout
- Feedstock: film, rigid plastic, wood, cable or mixed waste
| Product terms | Single shaft shredder blade, rotor knife, square knife, counter knife |
|---|---|
| Common forms | Square inserts, rectangular knives, profiled blocks, long stationary knives |
| Wear focus | Edge rounding, abrasive wear, impact chipping and bolt-seat damage |
| Quote input | Machine model plus drawing, sample or complete dimensions |
Do not rely on machine brand alone: knife dimensions can vary by model, rotor version and production year.
System relationship
The rotor knife and counter knife must work as a pair.
Cutting clearance, knife protrusion and seat condition influence energy use, output size and edge life. A replacement part should be checked against the mating knife and holder—not only copied from its outside dimensions.
Seat
Confirm the mounting face, pocket angle and bolt engagement.
Projection
Record how far the cutting edge sits above the rotor or holder.
Clearance
Check the working gap to the bed or counter knife.
Wear pattern
Compare multiple positions to separate geometry errors from normal wear.
Related pages
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Application details help narrow edge and material choices.