Effective concept

Adjustable rotor plate

The WS 150, WS 220 and WS 250 tractor-towed stabilizers from WIRTGEN are the most powerful stabilizers in their class. This is attributable, to a significant extent, to the mixing chamber which has been designed in line with field requirements and greatly contributes to the homogeneous mixing of binders and soil. The rotor housing design and high position of the rotor plate have been perfectly tailored to the powerful milling and mixing rotor. Optimum contact pressure of the scraper blade is maintained by hydraulic cylinders and springs at the rear rotor plate. These features ensure an optimum quantity of construction material in the mixing chamber at all times and also create an even surface behind the tractor-towed stabilizer. WIRTGEN stabilizers are the ideal candidates also for homogenizing soils averse to compaction, such as non-uniform soil mixtures.

Low working depth

Low working depth

High working depth

High working depth

Side plates moving on skids prevent performance losses

Height-adjustable side plates enable the milling and mixing rotor to penetrate the soil to the specified working depth right from the start. The intelligent design prevents the side plates from sapping power needlessly as a result of being pulled through the recycled material. The power provided by the tractor is used entirely to drive the milling and mixing rotor. If required, the operator can raise the side plates via hydraulic cylinders. The current working depth can be monitored conveniently from the tractor’s cab at all times via the digital milling depth indicator.

Combined with a mechanical retainer, the side plates guarantee a consistent working depth.

Combined with a mechanical retainer, the side plates guarantee a consistent working depth.

The hydraulically height-adjustable side plates allow the milling and mixing rotor to penetrate the soil immediately.

The hydraulically height-adjustable side plates allow the milling and mixing rotor to penetrate the soil immediately.

The lifting side plates ...

The lifting side plates ...

... move over the surface on skids regardless of the working depth.

... move over the surface on skids regardless of the working depth.

Side plates comprising a mechanical retainer can be installed at the tractor-towed stabilizer at the customer’s request. The retainers can be adjusted manually and ensure compliance with the specified working depth. In this design, the three-point hitch of the tractor is in floating position, and the tractor-towed stabilizer moves on the skids. A typical example of use is the stabilization of agricultural roads at a consistent working depth of 25 cm.

Variable stone guard

The rotor housing is additionally equipped with a variable stone guard at the front. The stone guard protects against flying stones and reduces the development of dust. The unit is adjustable in height hydraulically and can be adapted to site conditions.

The stone guard consists of fatigue-resistant hard rubber ...

The stone guard consists of fatigue-resistant hard rubber ...

... and can be adjusted to the stabilizer’s current working depth.

... and can be adjusted to the stabilizer’s current working depth.

Finishing with a perfect surface

Following thorough mixing, the soil is levelled across the full width by the permanently pre-tensioned rotor plate which is fitted with an adjustable levelling blade. This design ensures that an optimum quantity of construction material mix is in the mixing chamber at all times, and additionally creates an even surface behind the tractor-towed stabilizer. The working depth is set via the tractor’s rear power lift. Powerful hydraulic cylinders and springs with high spring rate ensure steady contact pressure at the rear rotor plate. Depending on the working depth and type of soil to be stabilized, the angle of the levelling blade to the rotor plate can additionally be adjusted manually to ensure optimum distribution of the material at all times. After compaction by suitable rollers, the stabilized soil meets the specified quality standards.

The adjustable levelling blade produces a smooth, even surface regardless of the working depth.

The adjustable levelling blade produces a smooth, even surface regardless of the working depth.

Adjustment of the levelling blade is effected mechanically via slotted holes.

Adjustment of the levelling blade is effected mechanically via slotted holes.

Long spring assemblies ensure optimum contact pressure of the rotor plate.

Long spring assemblies ensure optimum contact pressure of the rotor plate.

After compaction by suitable rollers, the stabilized soil meets the specified quality standards.

Market-leading and cutting-edge products for the Road and Mineral Technologies business sectors are constructed at the WIRTGEN brand headquarters in Windhagen, Rhineland-Palatinate. With its innovative, high-performance and cost-efficient products and technologies for cold milling, soil stabilization, hot and cold recycling, concrete paving and surface mining, WIRTGEN leads the world market in road construction and repair, as well as in mining natural rock and pay minerals.

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