Pre-shredder
VSR
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).
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
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.
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
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
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 |
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