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Size reduction

SZ-Series Double Shaft Shredder

Two counter-rotating shafts tear bulky, mixed and contaminated plastic waste at low speed and high torque — the right first stage when feed is unpredictable.

Application

For bulky and mixed feed

Where a single shaft machine would jam on tramp material or oversized lumps, the double shaft configuration keeps material moving and tolerates a wider feed range.

SZ-series double shaft shredder cutting chamber

Material fit

Baled film, jumbo bags, pipe bundles, pallets, crates, drums and mixed plastic waste.

Double shaft shredder rotor with hooked blades

Design points

Low-speed high-torque drive, hooked blade geometry and a hardened cutting chamber.

Shredded output from double shaft shredder

Output

Coarse, uniform shred that feeds a crusher, washer or granulator.

Technical data

Published model data

Values as published. Other configurations, including wider chambers and custom blade geometry, are quoted per project.

ModelTypePowerRotor diameterFeed openingCapacity
SZ-800Double shaft30×2 kWØ300800×600 mm800-1,500 kg/h
SZ-1200Double shaft45×2 kWØ3501,000×800 mm1,500-2,500 kg/h
SZ-1500Double shaft55×2 kWØ4001,200×900 mm2,000-3,500 kg/h

Published figures. Throughput depends on bulk density, feed size and the output size required.

Process

How it works

Slow rotation, high torque, and a tearing action rather than a cutting one.

Loading

Bulk feed is loaded by grab, conveyor or hopper.

Tearing

Counter-rotating hooked blades tear material apart.

Recirculation

Oversize pieces stay in the chamber until small enough to pass.

Discharge

Coarse shred discharges to the next stage.

Equipment inside

Related equipment

Pair with a crusher when a finer, washable particle size is needed.

Single shaft shredder PS-series crusher

FAQ

Common questions

When should I choose double shaft over single shaft?

Choose double shaft when feed is bulky, mixed or likely to contain tramp material, or when throughput requirement is high. Single shaft is better for a consistent, finer output.

Can it handle metal contamination?

It tolerates more tramp material than a single shaft machine, but metal removal is still recommended to protect blades and downstream equipment.

What capacity range is available?

The published models run from 800-1,500 kg/h on SZ-800 up to 2,000-3,500 kg/h on SZ-1500.

Does it produce a washable particle size?

Not on its own. A crusher downstream brings the material to the size a washing line needs.

Send us your feed type and hourly target.

Send material details