Compact Mobile Construction Crane Enhances Urban Installation Efficiency

Optimizing lift operations in confined spaces, MSG Krandienst integrates Liebherr's advanced mobile crane technology to improve site accessibility and operational flexibility.  www.liebherr.com MSG Krandienst GmbH, a crane service provider based in Germany, has deployed the Liebherr MK 120-5.1E mobile construction crane to modernize its fleet and enhance its capabilities for urban installation projects. This deployment aims to address operational challenges related to tight site constraints and the requirement for extended reach when installing HVAC systems, steel structures, and roof insulation. Addressing Operational Constraints in Urban Environments MSG Krandienst GmbH sought a compact, five-axle mobile construction crane capable of replacing aging equipment while providing superior reach and lifting performance. The company required a machine that could navigate narrow urban job sites while maintaining the capacity to handle heavy loads for diverse project logistics tasks. The primary goal was to achieve greater flexibility in setup without compromising safety or lift capacity. Technical Solution: The MK 120-5.1E Mobile Crane The company selected the Liebherr MK 120-5.1E for its integration of a three-stage outrigger system and an efficient counterweight configuration. The crane features sliding booms that allow for three different extension lengths, enabling asymmetrical setup in restricted spaces where full outrigger extension is not possible. For heavy-load applications, such as the installation of trapezoidal steel sheets, the crane utilizes a standard ballast of 4.8 tonnes, which can be supplemented by an additional three-tonne package to optimize load charts. Technical Performance and Deployment Results During practical applications, including steel-framed building construction in Lenzkirch, the crane achieved reaches of up to 48 meters while handling gross loads of approximately 2.3 tonnes. With the full ballast package, the machine maintains lifting capacities exceeding two tonnes at a 52-meter radius. This performance profile allows for the efficient transport and installation of materials directly onto roof structures from a single crane position. Björn Jatz, Managing Director of MSG Krandienst GmbH, noted that the counterweight concept provides a measurable advantage in lifting capacity and reach. The system facilitates cost-effective operations by reducing the need for multiple setups on sites with limited footprint. Operators benefit from the improved design of the crane cab, which allows for adjustable elevation to maintain a clear line of sight to loads and installation personnel, thereby increasing site safety. Reliability and Long-Term Field Maintenance The integration of this unit aligns with MSG Krandienst GmbH's fleet strategy, which emphasizes the standardization of high-performance equipment. With 175 employees and a fleet comprising 55 mobile cranes, the company relies on established maintenance and support structures provided by manufacturers to ensure long-term equipment availability. The transition to the MK 120-5.1E has allowed the firm to maintain its service level agreements for project logistics while improving the throughput of installation-based tasks. Edited by Aishwarya Mambet, Induportals Editor, with AI assistance. www.liebherr.com Powered by Induportals Media Publishing