The right tool for tough shredding tasks

Pre-shredder

VSR
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Pre-shredder

The pre-shredder of type VSR is a low-speed, high-torque twin-shaft crusher. Each shaft is equipped with rotating tools that reliably tear the feed material. The machine is suitable for the pre-shredding of particularly bulky or voluminous materials (such as domestic, industrial, commercial and bulky waste, as well as construction waste).

Benefits at a glance:

  • Reliable shredding results
  • Simple rotor shaft replacement
  • Wearing parts can be regenerated
  • High throughput rate
  • Proven in countless applications
  • Very low maintenance requirements

Highlights

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On-target shredding results

  • Reliable shredding and homogenization to the desired level of granulation
  • Uninterrupted downstream process steps 

Doubly effective shredding capability

  • Intensive shredding results between the rotating tools and the stationary tearing table, or a crossbeam under the shafts.

Forward-reverse sequence

  • Intensive shredding results, even with very coarse feed material
  • Prevention of material build-up

Low operating costs

  • Evenly distributed load of the rotating and stationary tearing tools across its entire length
  • Rotor shafts and tearing table can be reconditioned multiple times thanks to hard-face welding

High system availability

  • Long-lasting wear parts
  • Quick-change system for fast and simple replacement of rotor shafts

High throughput rates

  • High-torque drive
  • Ready for use in three-shift operation 

Flexibility

  • Disaggregation of a large number of input materials
  • Tearing tools can reliably process even voluminous or bulky feed material due to relatively large shaft diameters

One-piece machine housing

  • Heavy-duty, single-piece welded steel construction
  • No screw connections which are prone to causing malfunctions
  • Long machine life

Technical systems

Design

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Infeed hopper

The machine is equipped with a large, central infeed hopper. In addition to standard solutions, customer-specific hoppers are also available.

Machine housing

The machine housing is designed as a highly robust, one-piece, welded steel construction. This allows the machine to absorb extremely high forces without difficulty.

tearing tools

Shredding takes place between the shafts equipped with tearing tools and on the tearing table, or a crossbeam and scraper. The machine can be equipped with tearing tools specifically suited to the feed material. These tools differ in diameter and shape. The tearing table is built in a way that accommodates this variety.

Drive

Each shaft is powered independently. The machine drive can be driven hydraulically or electromagnetically. In both cases, the drive system consists of standard industrial drives and a variable speed controller. The control and drive system can alternate the rotor direction to adapt to the shredding material.

Hydraulic Pusher Unit

A hydraulic pusher device is available as an option. It ensures continuous material infeed when processing low-density, light or bulky feed stock.

Tearing Table or Crossbeam

The tearing table, or crossbeam and scraper, is designed as a one-piece unit and located below the two rotor shafts. It can be easily removed and replaced to accommodate shaft changing.

Tearing table

Shaft changing

When the infeed hopper has been disassembled, the rotor shafts equipped with their quick coupling are exposed. The quick coupling is screw-fastened and makes shaft changing possible without having to disassemble the drive system. The rotor shafts are easy to remove.

Function

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Both rotor shafts engage the feed material. The shafts rotate alternately inward and outward. Each shaft is equipped with several tearing tools. The rotating tearing tool is surrounded by a stationary tearing table, or a crossbeam and scraper. Shredding takes place between the individual rotating tearing tools and the stationary assemblies. In the process, the machine automatically carries out a sequence involving different directions of rotation. As soon as the feed material has reached the desired size, it exits the machine through the bottom.

Technical specifications

Performance data
Typ Drive power 1) Rotor speed (max.) Rated torque Rotor diameter x length Number of shredding tools Width of shredding tools
VSR 0912 2 × 55 kW 16 − 37 UPM 20.000 Nm 480 × 1.200mm 4 − 8 60 − 80mm
VSR 1215 2 × 90 kW 16 − 37 UPM 33.000 Nm 530 × 1.500mm 4 − 8 80mm
VSR 1518 2 × 132 kW 16 − 37 UPM 47.000 Nm 730 × 1.800mm 6 − 12 80 − 120mm

1)Electric drive system. Hydraulic drive system available on request.

All specifications apply to the standard design. Technical data for customized designs may differ from the specified data. All technical data may change due to development. Subject to modification without notice.
Dimensions and weights
Typ A B C D E F G Shredding chamber length x width Weight
VSR 0912 5.200 mm 2.200 mm 4.000 mm 1.500 mm 2.500 mm 1.600mm 1.400 mm 1.200 × 900mm 14 t
VSR 1215 5.500 mm 2.500 mm 4.200 mm 1.500 mm 2.800 mm 1.800mm 1.500 mm 1.500 × 1.200mm 22 t
VSR 1518 7.600 mm 3.000 mm 4.800mm 1.500 mm 2.900 mm 2.000 mm 1.500 mm 1.800 × 1.500 mm 35 t

Solutions

Images

Tests give certainty

Which technical solution is the right one for your recycling process? Don’t leave anything to chance. Our team of specialists will test your material at our test center and develop a solution tailored to your specific needs.

Downloads

“Pre-shredder (VSR)” brochure
“Recycling solutions” overview brochure
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Events

E-Waste Expo 2020

18.11.-19.11.2020 | Frankfurt/Main (Germany)

Recycling Gorinchem 2020

17.11.-19.11.2020 | Gorinchem (Netherlands)

IERC 2021

20.01.-22.01.2021 | Salzburg (Austria)
Booth 1

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Find your personal contact person on site. We are there for you worldwide.