General information

Q1: What is the production capacity of the CONSTMACH Mobile 120?

The Mobile 120 has a nominal production capacity of approximately 120 m³ of compacted concrete per hour under standard operating conditions.

Q2: What type of mixer does the Mobile 120 use?

It is equipped with a twin-shaft mixer with an approximate wet concrete volume of 3 m³ per batch, ensuring fast mixing cycles and homogeneous concrete quality.

Q3: Is the 2019 Mobile 120 different from newer models?

The core technical specifications—such as production capacity, mixer size, and overall layout—remain essentially the same. Differences are mainly related to the year of manufacture, component wear, and any optional equipment fitted to the specific unit.

Layout, transport, and installation

Q4: How is the Mobile 120 transported between job sites?

The plant is designed on two mobile chassis. One chassis carries the aggregate hopper and weighing system, while the second carries the transfer conveyor and mixing group. Each chassis can be transported separately by towing.

Q5: What space is required to operate the plant?

A recommended working area of around 500 m² is required to accommodate the plant itself, aggregate loading operations, and access for concrete mixer trucks.

Q6: How long does installation usually take?

With prepared, level ground and an experienced installation crew, setup is typically completed in a relatively short time compared with stationary plants. Most components are pre-assembled on the chassis; the exact duration depends on site conditions and crane availability.

Power and utilities

Q7: What electrical power is required for the Mobile 120?

The total installed motor power is approximately 205 kW. Where grid power is not available, a generator with a capacity of around 300 kVA is generally recommended.

Q8: Is an air compressor included with the plant?

Yes. Mobile 120 configurations typically include an air compressor with an approximately 500-liter receiver tank and a 7.5 kW motor for pneumatic actuators and cleaning operations.

Aggregate, cement, and water systems

Q9: How many aggregate bins does the plant have, and what is their capacity?

The aggregate storage hopper consists of four separate compartments, commonly configured as 4 x 25 m³. This allows up to four different aggregate types with a total storage capacity of about 100 m³.

Q10: Does the Mobile 120 have an integrated cement silo?

No. The Mobile 120 does not include an internal cement silo. It is designed to operate with external cement silos, typically ranging from 75 to 500 tonnes, depending on project requirements.

Q11: What are the typical weighing capacities for cement, water, and admixtures?

Typical weighing capacities are approximately 1,800 kg for cement, 1,000 liters for water, and 50–100 liters for chemical admixtures, providing accurate and consistent batching.

Operation and control

Q12: What kind of control system does the plant use?

The Mobile 120 is equipped with a fully automatic PLC-based control system using high-quality electronic components, commonly from manufacturers such as SIEMENS and SCHNEIDER, with a user-friendly operator interface.

Q13: Can the plant be operated in manual mode if needed?

Yes. In addition to fully automatic operation, manual control modes are available for maintenance, troubleshooting, and special operating conditions.

Q14: How many people are typically needed to run the Mobile 120?

A relatively small crew is sufficient: usually one plant operator in the control cabin, along with loader and truck drivers and minimal support staff. Exact staffing depends on shift patterns and site logistics.

Maintenance and lifespan

Q15: What routine maintenance does the 2019 Mobile 120 require?

Routine maintenance typically includes daily cleaning of the mixer, lubrication of bearings and moving parts, inspection of belts and liners, calibration of weighing systems, and regular checks of electrical and pneumatic components.

Q16: What is the expected service life of a Mobile 120?

With proper maintenance and the use of quality spare parts, Mobile 120 plants are designed for many years of service. A well-maintained 2019 unit can still deliver long-term, reliable performance.

Application and suitability

Q17: For what types of projects is the Mobile 120 most suitable?

The Mobile 120 is well suited to medium and large-scale projects requiring high output with mobility, including road construction, infrastructure works, wind farm foundations, and large building sites.

Q18: Can the plant produce different types of concrete?

Yes. The twin-shaft mixer combined with precise weighing systems allows the production of a wide range of concrete mixes, including standard ready-mix, high-strength concrete, and specialized formulations within the plant’s design limits.

Purchasing and options

Q19: What options or customizations are commonly available?

Common options include varying sizes and numbers of external cement silos, aggregate pre-feeding systems, dust collection units, advanced admixture systems, and mixer moisture or slump monitoring devices.

Q20: What should be checked when buying a used 2019 Mobile 120?

Key inspection points include mixer wear (liners, arms, and paddles), conveyor belt condition, structural and chassis integrity, load cells and sensor accuracy, control system functionality, and the completeness of service and maintenance records.