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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

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

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

Electrical waste

Domestic & commercial waste

Refuse-derived fuels (RDF)

Drywall

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