mixing pump / water / grout / industrial



  • Media:

    water, grout

  • Domain:


  • Other characteristics:

    high-performance, skid-mounted, explosion-proof, injection, mixing, stainless steel

  • Flow:

    32.5 l/min, 50 l/min (8.5856 us gal/min)

  • Pressure:

    30 bar, 36 bar (435.113 psi)

  • Power:

    7.5 kW, 8 kW (10.2 hp)


The MAI®400EX grout pump offers the highest levels of safety for underground mining
Explosion-proof grouting machines are an essential part of modern mining work and the MAI®400EXgrouter offers user-friendly and safe operation in potentially dangerous environments.

Practically indestructible, high-performance grout pump

The mine-compliant design of the MAI®400EX grouter has various applications in potentially explosive atmospheres. Stainless steel and particularly robust hot-dip galvanised components guarantee a long service life and protection against damage.

The rugged steel frame stands up to the toughest conditions on the job site. The skid-mounted mixing pump for cementitious grout has been specially designed for the tough working environments often found in underground mining. The MAI®400EX is an explosion proof grouting machine.

For all its safety features, the MAI®400EX grouter does not compromise on performance. It will continuously mix and pump the widest range of mortar grouting materials from thin to thick consistencies.

The patented elements of innovative water injection, grout pump mixing and mixing blades guarantee a homogeneous mixing and processing quality (Patent No: WO 2004/080676 A1 and Patent No: EP 1 768 771 B1).

A design with multiple safety functions

Safety plays a crucial role in potentially explosive atmospheres such as coal mining and the MAI®400EX has been designed with multiple safety functions to ensure the highest level of safety in underground consolidation works.