Crawler Tractors Product information PI_PR724-764_enUS.INDD PI_PR724-764_enUS.INDD 1 1 PR 724 – PR 764 Grade control systems 18.12.2009 18.12.
Grade control systems for crawler tractors To be successful despite the constantly increasing cost and time pressures, construction machinery must meet the highest demands regarding working speed and accuracy. Increasingly, automatic grade control systems are utilized to improve the productivity of operator and machine. They utilize existing planning data to automatically guide the machine attachments when removing or spreading material.
Laser control Applications • Creation of horizontal or sloped grades with high accuracy • Suitable for small to medium sized construction sites • Application for construction of sports fields, storage or dump sites, road construction, housing and residential areas, etc.
GPS control Applications • Establishment of large grades and complex, three-dimensional surfaces • Suitable for medium sized to very large construction sites • Application in road and rail construction, construction of golf courses, industrial facilities, earth moving, landfills, etc.
Grade control with total station Applications • Establishment of large grades and complex, three dimensional surfaces with high accuracy • Suitable for medium sized to large construction sites • Can be used in road construction, construction of golf courses, terrain preparation for large residential or commercial sites, airport runways, etc.
Pre-installation kits for Liebherr crawlers Which control system on which tractor? Generally laser and GPS controls as well as systems with total station from all current manufacturers can be installed on Liebherr crawlers. The final installation is made by the respective system manufacturer or their dealer. Pre-installation kits for PR 724 and PR 734 In practice, predominately small or medium sized crawler tractors are used for work with automatic grade control systems.
Components of the pre-installation kits Electrical preparation Hydraulic components Complete wiring in the inside of the machine including plug connections, power supply connections and control module. All required hydraulic valves and the complete hydraulic hose system in the inside of the crawler. Mounting brackets on the blade Welded-on mounting brackets for the masts, as well as a suitable mount for the slope sensor.
NTB_RS_US_D.qxd 26.03.2007 10:38 Uhr Seite 1 The Liebherr Group of Companies Wide product range State-of-the-art technology The Liebherr Group is one of the largest construction equipment manufacturers in the world. Liebherr’s highvalue products and services enjoy a high reputation in many other fields, too. The wide range includes domestic appliances, aerospace and transportation systems, machine tools and maritime cranes.
