The shredder WLK 4 processes plastic easily | WEIMA

The V-rotor, developed in-house by WEIMA, is suitable for universal use and is made from solid material. Its aggressive feed mechanism, featuring up to two rows of blades, guarantees high throughput with low power consumption. It can be fitted with hardened steel cutting blades with a blade length of 40 mm. These blades can be turned over several times as they wear, which drastically reduces maintenance costs.

A consistent feed is crucial for stable shredding processes.
The horizontally operating hydraulic pusher is automatically controlled by the system based on the load. Optional serrated plates and hold-down devices improve the securing of bulky parts. An integrated shock valve protects the hydraulic cylinder from impact loads.
The result is continuous material feed, reduced blockages and an extended service life for the mechanical components.

The hopper design ensures a continuous feed without material bridging.
The rounded, free-flowing geometry prevents bulky parts from jamming in the feed area. Large opening cross-sections also allow for feeding by hand, via a conveyor belt or through an automated feeder. Hopper extensions and lids with gas springs are available on request.

The desired final particle size is reliably determined by the screen.
Screw-mounted screens with different hole diameters can be used depending on the material and process. Smaller hole patterns produce correspondingly finer fractions.
This allows the size distribution to be precisely tailored to downstream processes such as briquetting, pelletising or thermal recovery.

A protected hydraulic system increases the machine’s uptime.
All sensitive hydraulic components are integrated into the machine frame in a space-saving design and are shielded from dust and external influences. Separate service access points ensure quick access for maintenance.
This reduces wear, simplifies maintenance work and allows for a compact, tidy installation.

The discharge system can be adapted to suit individual plant designs.
Depending on the frame design, extraction ports, discharge screws or conveyor belts are available. The interfaces are designed to allow for easy integration into existing conveying systems.
This enables the shredded material to be transported cleanly, continuously and reliably.

Smooth running improves operational reliability and flexibility of location.
Vibration-damping machine feet absorb any vibrations that occur and distribute the load evenly. Fixed floor anchoring is not usually required.
This makes installation easier, reduces the transmission of vibrations to the surrounding area and enhances user comfort.

The drive is designed to withstand high loads during continuous operation.
The specially developed WAP gearbox is manufactured in our own production facilities and connected to a powerful electric motor via V-belts. An integrated vibration damper protects against shock loads.
This design ensures high torque transmission, reduced wear and a long service life.

The F-rotor really comes into its own when processing flexible materials such as filaments, films or veneer. Its controlled feed behaviour, combined with precise cutting geometry, enables a powerful cut. This ensures high material throughput. The blade holders are firmly welded to the solid-material rotor. Cutting blades with edge lengths of 30 or 40 mm are also reversible.

Stable process control is crucial for cost-effective continuous operation.
The WLK 4 is equipped with a Siemens PLC including a touchscreen display. Slider movements, cycle times and load limits are precisely controlled. An integrated overload protection system continuously monitors the machine load and intervenes automatically in critical situations.
In industrial applications, this ensures reproducible operating conditions, minimised downtime and protection of the drive and cutting mechanism.

The rotor bearing is designed to withstand high mechanical loads.
Its recessed design protects it from dust and foreign particles. At the same time, it remains easily accessible from the outside for maintenance work.
This extends service life, reduces unplanned downtime and facilitates maintenance in continuous industrial operation.