Plastic Shredder Machine for Single-Shaft, Twin-Shaft and Pipe Shredding

Rotor speed and torque, not size. Our shredders run between 8 and 74 rpm depending on series, so they shear whole items. A granulator or crusher runs far faster and cuts against a screen to produce controlled regrind, typically 8 to 16 mm. In a full line the shredder goes first and the granulator refines behind it.

Twin-shaft, at 8 to 15 rpm, for whole drums, pallets, bales and tyres, where torque is what you need. Single-shaft, at around 72 rpm with a hydraulic pusher, for lumps and offcuts where you need more even output. If your material is bulky film or woven bags, neither applies and the swing-arm YPS is the right machine.

Output is set by the screen aperture, typically 20 to 100 mm. A shredder is not the machine for fine particles. If you need 8 to 16 mm regrind, put a crusher behind the shredder rather than fitting an unnecessarily fine screen, which cuts throughput and raises power consumption per ton.

It depends on material and steel grade rather than on running hours. Clean plastic on 9CrSi runs a long time between sharpenings, while sand-laden agricultural film or tyres containing steel will wear even D2 or tungsten carbide much faster. We supply the knife and screen list with the order so you can plan the interval against your own material instead of a generic figure.

Occasional small metal is survivable with tungsten carbide knives and automatic overload reversal, which all four series have through their Siemens PLC control. Deliberately feeding metal-cored waste is a different question and needs discussing before the order, because it changes the knife specification and the wear budget.

Not with the LPS series. The LPS800 takes pipe up to 630 mm diameter and the LPS1200 up to 1,100 mm at full length, which removes the sawing operation entirely. On any other series pipe has to be cut to hopper length first, and that labour recurs on every ton you process.

Low rotor speed helps with both, which is one of the less obvious advantages of the twin-shaft machines. Enclosed chambers, discharge hoods and extraction on the conveyor handle the rest. Dust matters most on dry rigid material; on wet or film waste it is rarely the deciding issue.

Almost always, unless you are shredding into a bin and moving it with a forklift. A belt or screw conveyor to the next machine is what makes the line continuous, and it is also the natural place to fit magnetic separation. We put it in the layout rather than leaving it as an afterthought.

We do not publish a single figure, because the same nominal capacity can differ by a wide margin depending on three things: the hardest item that can reach the rotor, whether the feed needs a hydraulic ram, and whether a knife programme and spare set are included. Send the feed description and target kg/h and you get a scoped number rather than a range. The cost guide explains which lines a quotation is allowed to leave out.

It follows the contaminant, not the polymer. Clean plastic runs well on standard tool steel. Feed that can contain grit, stones or occasional metal needs a harder, more impact-resistant grade and accepts a shorter resharpening interval in exchange for surviving the hit. Ask any supplier for expected knife hours on your material and the resharpening cycle, because that number is the real cost, not the price of one blade set.

A twin-shaft shredder will physically open timber, cable and tyres, but the machine has to be specified for it from the start: heavier rotor, different knife geometry and proper overload protection. Running mixed bulky waste through a shredder sized for clean plastic is the most common way to lose a knife set early. For scrap tyres specifically we cover the 50 to 150 mm size-reduction stage — see the industrial shredder entry.

Industrial plastic scrap is shredded with a single-shaft or twin-shaft shredder, sized by the shape of the feed rather than the polymer. Twin-shaft machines suit drums, pipe, pallets and mixed bulky scrap; single-shaft machines with a hydraulic ram suit film, bales and lighter material that would otherwise bridge above the rotor. Domestic tools and general waste shredders are not built for the torque plastic requires.

Yes, but the value comes from the processing, not the scrap itself. Mixed, dirty, baled plastic is close to worthless at the gate. The same material shredded, washed and sold as clean flake reaches a usable resale grade, and as pellet it reaches a converter price. What each step is worth depends on your local market, so check what buyers near you pay for flake versus pellet before deciding how far down the line to invest.