Double Shaft Shredder Machines

Industrial shredders are usually grouped by the number of shafts. A single shaft shredder has one slow rotor whose blades shear material against fixed blades, typically with a hydraulic pusher feeding it and a screen setting the piece size. A double shaft shredder, also called a dual shaft or twin shaft shredder, tears material between two counter-rotating shafts of cutters and leaves an uneven shred. Four shaft shredders add a second pair of shafts for a finer cut. A grinder, or granulator, is a different machine: fast rotor knives cut against fixed knives and a screen to make uniform regrind, often after a shredder. We offer single shaft shredders, the dual shaft range on this page and grinders and granulators.

Shredder if your waste is too big, too thick or too mixed for a grinder throat, or if the job is destruction and volume reduction. Grinder if you need screened, uniform regrind from material that already fits a throat. Many recycling lines run both: dual shaft first, then a grinder as stage two.

Two things decide it. First, the cutting head opening, which should take your material as it arrives: openings run from 400 x 385 mm on the DS4005 up to 1010 x 569 mm on the DS1040 and 1000 x 675 mm on the DS1080. Second, the drive: denser, thicker material and bigger daily volumes need more torque, from 5.0 HP on the DS4005 and DS5005 to 80.0 HP (2 x 40 HP) on the DS1080. Tell us the material and your daily volume and we will recommend the model honestly.

A dual shaft machine tears material between its cutters rather than cutting it against a screen, so the pieces vary in size. That is normal for this type of primary shredder. Piece size is steered by the cutters fitted, selected at order. For defined granule sizes, add a grinder stage.

Across our range: mixed plastic scrap, drums, crates, bottles, PP woven and non-woven bags, laminate tubes, cartons and tetra pack, pharma rejects, glass bottles and vials, e-waste and devices, elastic and textile waste, cellulose sheet and green waste. Keep tramp metal and batteries out of any shredder. Tell us your material and we will confirm which model suits it.

Every machine is quoted to the job. The price depends on the model and its capacity, the motor, the material you shred, the options you choose and the feeding and discharge your line needs. Our guide to what drives machine cost walks through each of those. Send us your material and daily volume and we will size the machine and quote it.

Several Indian companies build double shaft shredder machines. Raj Electricals is one: a manufacturer since 1985, with more than 2,100 machines supplied and over 50 exported, and a dual shaft range of 13 models from the DS4005 to the DS1080. Every machine carries a 1 year manufacturer warranty against manufacturing defects, plus lifetime service and spares support. Whoever you consider, ask for the full specification of each model and a trial on your own material before you decide.

Yes. Bring your actual material to our works in Andheri East, Mumbai, and watch it processed on the model you are considering. A trial settles capacity and output questions better than any brochure, and our machines already run across India and in export markets.