Meka Concrete Mixers
The differences between MEKA and its rivals:
- are 5-10% heavier than their equivalents, due to steel structure used in main structure and interior abrasion proof parts, as well as difference of thickness. As a result, MEKA mixers have a longer lifetime. [read more]
- For interior abrasion proof parts, NI-HARD special alloy cast, which is more resistant and expensive than Hardox, an optional cast offered by other manufacturers, is used. For comparison, Hardox(500) is worn away in t time, NI-HARD is worn out in 3t time. That is, NI-HARD lasts three times more. Moreover, most of mixer producers all around the world use HARDOX 400, instead of 500. NI-HARD material wears out much later; however, it is more fragile than HARDOX. The higher rigidity means higher abrasion resistance; nevertheless, the fragility increases as well. Thanks to shock absorber ribs in pallet design, MEKA mixers are protected against fragility. The flexibility of base plates is increased since they are connected by means of ceramic adhesive.
- Surface rigidity of Hardox material decreases towards middle parts. After the abrasion of 3mm section on the surface, the wear accelerates. Since rigidity of NI-HARD material is identical in every section, abrasion rate does not vary. Depending on the rigidity of used aggregate, wear parts and mixer pallet lifetimes can reach a production capacity of 1,000,000 m3.
- The lever structure is specially designed in terms of strength and abrasion resistance. Pallet groups are particularly reinforced against failure, and their lifetime is extended through a concave structure against wear. Bearing designs and interior abrasion proof parts are equivalent of German products in terms of technology. The lifetime of mixer lever by manufacturers is usually shorter than that of wear plates. However, another feature of MEKA mixers is that the lifetime of lever group is equal to inner abrasion proof parts thanks to cast thickness. MEKA twinshaft mixers can smoothly blend materials with grains up to 150mm in diameter.
- Bearing group is a serious structure that consists of seal & metal blend and polyurethane seals called metallic seal, which prevents access of grout. The structure entraps the grease and hinders the grout from penetrating into bearing. Therefore, lifetime of bearing can easily attain 500,000 m3 by help of necessary maintenance.
- Pallet angles are 45°, which means capacity of getting more loads. By this means, it is directly suitable for RCC mix, apart from ready mixed concrete applications.
- Planet mixer grain thickness can reach 50mm, whereas single-shaft can process 70mm and twin-shift can process grains of 150mm thick. MEKA single-shaft can be used for RCC production in case grain thickness does not exceed 70mm.
- Before cement and aggregate arrives at inner surface of mixer, they interpenetrate each other during flow and mixing begins. Consequently, the mix is more homogeneous, and a complete mix is obtained in a short time. This flow minimises adhesion of materials within mixer.
