Putzmeister Mixkret 5: New low-profile concrete mixer for mining with 5 m3 capacity

Since its foundation in Germany more than 50 years ago, Putzmeister has been a leading provider of concrete pumping and placing equipment. With this know-how as a vantage point, Putzmeister has developed a range of mining and tunneling machinery, including shotcreting equipment as well as low-profile concrete mixers (“Mixkret”) to complement the concrete spraying process and optimize shotcrete logistics in mining.

The Putzmeister Underground Division will be present at the Copperbelt Mining Show in Kitwe together with its partner in this area, Resemin Zambia (28th – 29th April, Outdoor Area OS/8).

Putzmeister is extending its Mixkret series by the Mixkret 5 model, offering a concrete mixing and transport capacity of 5 m3. With this new launch, Putzmeister offers a compact machine equipped with a powerful Caterpillar 6-cylinder Diesel motor (168 kW / 225 HP), providing great traction force and climbing ability.

Thanks to the automatic altitude compensation system (AAC) of the Diesel motor, Mixkret 5 is able to operate at high altitude without loss of performance. This has been proven by the numerous Mixkret 4 equipped with the same system (Diesel motor Caterpillar C6.6 with 130 kW / 174 HP), which are currently working in the toughest conditions at altitudes of up to 5.000 m above sea level.

For customers who also wish to optimize their shotcrete additive logistics, Mixkret 4 and Mixkret 5 optionally include a liquid additive discharging system including an additive tank and pump. In this way, the concrete mixers can feed any concrete spraying equipment not only with concrete but also with additives, reducing working time and increasing safety in the operation.

Maximum security and efficiency with ICVD drive system and automatic speed regulation systems

The compact design with heavy-duty axles, both steering and driving, and the powerful motorization endow Mixkret 4 and Mixkret 5 with a high degree of mobility and maneouverability in small-section galleries and tunnels. With the ICVD drive system without gear shift (Integrated Continuously Variable Drive), the motor power is fully used at all times without interruptions of the tractive force, reducing comfort for the driver.

The hydrostatic transmission together with a slope gradient measurement system and control software form the basis of the automatic downhill speed regulation system: The maximum speed of the vehicle is automatically regulated according to the slope gradient, taking maximum advantage of the holding force of the motor and reducing the probability of operating errors. This does not only guarantee maximum security in the operation, but also maximum performance and durability of the equipment.

Technical Data Mixkret 5

Length / Width / Height

7.340 mm/ 2.200 mm /2.500 mm

Turning radius: exterior / interior

6.000 / 2.400 mm

Concrete mixing drum, hydraulic operation



Caterpillar Turbo Diesel, 6 cilindros


168 kW (225 HP) a 2.200 rpm

Max. speed

20 km/h

Max. climbing ability.



Hydrostatic progressive system with continous variation (ICVD), no gears to change

Driving and Steering

4WD / 4WS

Source: www.putzmeisterunderground.com

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