New 40-tonne class Litronic excavator from Liebherr
Visitors to Intermat 2006 were the first to see Liebherr’s R 944 C Litronic, which is said to represent a totally new concept in crawler excavators. Many details of the basic machine and attachments are new or have been further developed compared with the previous R 944 B model. Depending on the working equipment and chassis specification, the service weight of the new machine is between 37.8 tonnes and 42.7 tonnes.
The R 944 C Litronic is powered by a new-generation Liebherr D 936 L in-line six-cylinder engine, which has a rated output of 190kW (258hp) at 1,800 rev/min, giving the machine 6% more power than the previous model. Numerous technical innovations ensure compliance with the latest environmental protection limits.
Similar to a passenger car’s engine, the cylinder heads now have four valves per cylinder. This reduces the loads on the individual valves and considerably extends the engine’s operating life. An innovative ‘LIDEC-Electronic’ (Liebherr Diesel Engine Control) engine-management system, which monitors all performance parameters and varies the settings on the basis of a continuous desired/actual comparison to ensure optimum efficiency in all operating conditions.
New exterior design is a feature of all C-Series crawler excavators, with optimum all-round vision provided by increased glass area in the cab. Vision is further enhanced by downward sloping upper superstructure panels and an engine cover that slopes away to the rear. Within the large air-conditioned driver’s cab, new low-effort hand controls deliver reduced response times for quicker operating cycles, assisted by an 11% increase in superstructure slewing torque and a higher slewing speed.
The R 944 C Litronic can be specified with ‘Liebherr Tool Control’, whereby, at the touch of a button, the excavator’s hydraulics are adapted to suit the operating parameters of up to 10 different hydraulic attachments, thus avoiding the need for manual adjustments to the hydraulics each time attachments are changed.
According to Liebherr, the R 944 C Litronic’s new working equipment increases breakout and tear-out forces to values significantly higher than those achieved by the previous model, while the larger diameter slewing ring improves the transmission of power from the superstructure to the chassis.
Depending on the application and the nature of the ground conditions, the machine is available with four types of undercarriage: the HD-S version for earthmoving work; the HD-SL version for maximum stability; the V-Version adjustable undercarriage; and the EW (extra-wide) version, which is particularly suitable for industrial applications.
The R 944 C Litronic is powered by a new-generation Liebherr D 936 L in-line six-cylinder engine, which has a rated output of 190kW (258hp) at 1,800 rev/min, giving the machine 6% more power than the previous model. Numerous technical innovations ensure compliance with the latest environmental protection limits.
Similar to a passenger car’s engine, the cylinder heads now have four valves per cylinder. This reduces the loads on the individual valves and considerably extends the engine’s operating life. An innovative ‘LIDEC-Electronic’ (Liebherr Diesel Engine Control) engine-management system, which monitors all performance parameters and varies the settings on the basis of a continuous desired/actual comparison to ensure optimum efficiency in all operating conditions.
New exterior design is a feature of all C-Series crawler excavators, with optimum all-round vision provided by increased glass area in the cab. Vision is further enhanced by downward sloping upper superstructure panels and an engine cover that slopes away to the rear. Within the large air-conditioned driver’s cab, new low-effort hand controls deliver reduced response times for quicker operating cycles, assisted by an 11% increase in superstructure slewing torque and a higher slewing speed.
The R 944 C Litronic can be specified with ‘Liebherr Tool Control’, whereby, at the touch of a button, the excavator’s hydraulics are adapted to suit the operating parameters of up to 10 different hydraulic attachments, thus avoiding the need for manual adjustments to the hydraulics each time attachments are changed.
According to Liebherr, the R 944 C Litronic’s new working equipment increases breakout and tear-out forces to values significantly higher than those achieved by the previous model, while the larger diameter slewing ring improves the transmission of power from the superstructure to the chassis.
Depending on the application and the nature of the ground conditions, the machine is available with four types of undercarriage: the HD-S version for earthmoving work; the HD-SL version for maximum stability; the V-Version adjustable undercarriage; and the EW (extra-wide) version, which is particularly suitable for industrial applications.
