Ls 1203

The Ls 1203 has three decks and produces four fractions in one pass. It is robust and reliable, with user-friendly and safe solutions. It is very versatile and energy-efficient.  

The Ls 1203 has an STE 3-67 screen box with three decks and a screening area of 1.4 × 4.8 m. It is four-bearing with a 12 mm stroke, 11° inclination and Vibroblock, and can screen 0–2 mm out of crushed asphalt and concrete.

The Ls 1203 has a belt feeder under an 8 m³ hopper. The reject grid is self-cleansing, tips hydraulically 90° and has adjustable bar spacing. The feed-in height is 3.2 m, which makes the machine easy to feed with a wheel loader.

Yes. The Ls 1203 R is our Recycling Edition with a powerful vibrating feeder. Otherwise it is the same as the Ls 1203.

The feeding conveyor can be raised for a full view of the upper deck. The chutes slide out for better access at the front, and the screen box has covered inspection panels in the sides. A ball deck can be fitted to the lower deck as an option.

The Ls 1203 sits on a heavy-duty road trailer with twin suspended, braking axles. Transport dimensions are 17.3 × 3.0 × 4.2 m and the weight is about 28 tonnes. Set-up takes about 10 minutes.

On mains power the Ls 1203 draws 24 kW. With a diesel generator (option), consumption is 4.5 l/h. The generator sits on a separate frame that can be placed away from the dust.

When you want several clean fractions in one pass, fine cuts or high capacity in mineral material. The Ls 1203 produces four fractions in one pass, and both Ls models can screen 0–2 mm out of crushed asphalt and concrete.

With the right screen box movement, yes. The large 12 mm stroke and the shallow 11° inclination break up lumps and give the material a long time on the mesh. A ball deck keeps the meshes clean. The Ls 1202 PD also has a mini shredder that breaks up soil clods before the screen.

Trommels work well on compost, wood chips and other light organic material, where the tumbling helps open up the material and one fraction + surplus is enough. For crushed rock, asphalt, concrete and soil that need several clean fractions, a vibrating screen is usually more efficient. But we have also had very good results with the Ls 1203 in wood chips.

The Ls models are electrically driven and draw 22–24 kW on mains power. Always compare the cost per tonne of saleable product, not just consumption per hour. A screen that delivers more clean fractions with less recirculating material gives a lower cost per tonne.

Capacity depends on the material being screened, its moisture content and the final fractions you want to produce. In dry material, the Ls 1203 handles up to around 400 tonnes per hour.

The Ls 1203 is equipped with Maskin Mekano’s proven STE 3-67 screen, which has a screening area of 1.4 × 4.8 metres on three decks. The powerful 12 mm stroke stratifies the material quickly. The low incline of 11° keeps the material on the screen long enough for even fine and short fractions to be separated accurately. As a result, the Ls 1203 has one of the highest capacities per square metre of screening area in the industry, and it maintains that capacity even with damp or sticky material.

Capacity examples when sorting within approved curves (max. 10% oversize / 15% undersize):

The capacity examples are based on crushed granite. The result in crushed concrete is the same.