Single shaft or double shaft
A single-shaft shredder pushes material against one rotor with a ram and sizes it through a screen. A double-shaft shredder shears between two slow rotors with no screen and leaves coarse strips.
No DramaBuyer guide · Plastics & molding
A shredder is bought for the worst lump in your scrap, purgings, drums or baled film, and a capacity figure measured on clean bottles says nothing about how it handles that lump.

01
A single-shaft shredder pushes material against one rotor with a ram and sizes it through a screen. A double-shaft shredder shears between two slow rotors with no screen and leaves coarse strips.
Ask for gearbox rating and whether the rotor reverses on overload. A shredder that stalls on every purging lump needs an operator beside it.
Ask for knife and counter-knife steel, how many times each knife can be turned or reground, and the price of a full set.
Baled film and long pipe need a different hopper and ram stroke from drums. Ask how your largest piece enters.
02
Send these with the enquiry. Without them, any number a factory gives you is a guess dressed as a quotation.
03
| Require this | A pass looks like |
|---|---|
| Shred a timed batch of your worst scrap. | Output weight per hour meets the offer with no manual clearing. |
| Sieve a sample of output. | Particle size inside the range agreed for your next machine. |
| Open the cutting chamber after the run. | No chipped knives and no loosened bolts. |
04
05
A plastic granulator or crusher, faster and cheaper per kilogram.
A waste-sector pre-shredder built for contaminants.
06
We name the kind of source, how many and when, and never the factory. Listed prices are asking prices, not landed cost. Where we do not hold a fact we say so: that is a GAP, not an estimate.
07
Every machine we source in this area is on the Plastics & molding page. How a project runs, stage by stage, is on how it works, and what it costs is on pricing.
Straight answers
One tested on your worst lump, with reverse on overload and knives you can source again.
Usually in gearbox, knife steel and control. Compare knife cost per tonne, not purchase price.
Rotor runout, knife clearance, ram stroke, overload reverse, emergency stops, and a timed run on your scrap.
The machine needs its Declaration of Conformity. Waste permits for treating plastic scrap are a matter for the operator locally.
Contact
Send a machine, a quotation you want checked, or a question. We reply with what we would look at first.
Sent
A person reads every message. You will hear back within one working day.
Not sent
Please email info@nodramachina.com directly and we will pick it up from there.