CASE Construction Equipment used CONEXPO CON/AGG 2017 to show a new range of larger excavators. The two new crawler excavators, the CX490D and CX500D, join the company’s D Series lineup. These new models are designed for heavy excavation work and replace the company’s previous 47 t excavator, the CX470C.
Each model is built to provide significant operational gains, including cycle times up to 10% faster, improved responsiveness and multifunctional controls, as well as greater fuel efficiency. An electronically controlled hydraulic pump and larger control and solenoid valves boost breakout forces, increase lifting strength and responsiveness.
D Series models offer more standard features than previous CASE excavators, simplifying the buying process and making them extremely versatile and operator friendly. All CASE D Series excavators provide peace of mind and lower total cost of ownership through CASE ProCare, a suite of product assurances that includes a three-year Advanced CASE SiteWatch telematics subscription, a three-year/3 000-hour full-machine factory warranty, and a three-year/3 000-hour planned maintenance contract.
Both models are available with an optional hydraulic counterweight removal device for improved on-site safety and efficiency during transportation.
Faster cycle times are achieved through a new electronically controlled pump, a larger control valve and multiple sensors. These features combine with the CASE Intelligent Hydraulic System and its four integrated control systems to make the best use of the machine’s hydraulic power and momentum, resulting in added strength and fuel efficiency.
The four systems that make up the CASE Intelligent Hydraulic System are: Boom Economy Control (BEC), which reduces RPMs by using gravity during boom down and swing; Auto Economy Control (AEC), which lowers RPMs during idle and automatically shuts down the engine after a preset idle time; Swing Relief Control (SWC), which reduces hydraulic power at the swing start; and Spool Stroke Control (SSC), which adjusts hydraulic pressure during digs.