Fuel efficiency marks Case interim Tier IV-compliant loader
- Written by CP Staff
Case Construction Equipment announced the 521F wheel loader at World of Concrete in February, citing a 12 percent increase in fuel efficiency over the previous E-Series model, plus faster acceleration and quicker cycle times. The machine is available in standard Z-bar, extended reach and tool-carrier models, and is the latest offering in the company’s F-Series wheel loader line, which boasts premium features and industry-leading performance, productivity and efficiency.
Case chose selective catalytic reduction (SCR) technology for the 521F to meet Tier 4 Interim emissions standards based on the machine’s application tasks and power demands. “SCR was the obvious choice for the 521F because a wheel loader’s tasks are more variable, creating inconsistent engine loads and power demands,” said Rob Marringa, brand marketing manager, Case Construction Equipment. “Rather than compromise power, we let the engine do what it does best—run at peak performance—and then use an after-treatment for emissions.”
The benefits of SCR technology are greater efficiency and reduced downtime because there’s no heightened fuel burn or diesel particulate filter (DPF) regeneration, Marringa adds. In addition, lower ambient temperatures means slower degradation of lubricating oil, which extends service intervals. Furthermore, fewer engine components means less crowding under the hood and easier access to service points. Operators also will experience a faster throttle response and cleaner emissions by avoiding recirculation equipment utilizing cooled exhaust gas recirculation (CEGR) and DPFs.
Optional heavy-duty axles, with auto-locking front and open rear differentials, have the same design as the larger F-Series wheel loader axles, including metal face seals and sintered bronze brake linings. Operators are also able to configure the wheel loader with solid, foam-filled or chain-wrapped tires. On a 50-m loading and dumping cycle, Case estimates the 521F can make up to 56 cycles per hour, moving up to 144 cu. yd. or 212 tons of material per hour.
The new advanced instrument cluster (AIC) on the 521F wheel loader has four operating modes, allowing operators and service technicians full visibility and control of basic job functions, such as diesel exhaust fluid (DEF) level and fuel efficiency, as well as protective controls that can help eliminate costly repairs. “Auto Idle is a fuel-saving feature that allows for multiple idle rates, thereby reducing fuel consumption while operators are waiting for the next truck to load or task to be completed,” said Marringa. “As an additional benefit to the Case wheel loader customer, Automatic Machine Protection recognizes a critical problem with the hydraulics, engine or transmission, and shuts down the engine as soon as the machine stops moving.”
The Case 521F wheel loader delivers comfort and visibility and new features to improve operator effectiveness, he adds. The Quiet Cab boasts the largest cab in the industry, has a 70.8 decibel rating, and supplies cleaner air with a dual air filtration system. It also provides a more comfortable ride with an optional heated air ride seat, and ergonomically positioned controls that ensure a long day in the cab won’t reduce productivity. New options include joystick steering, rear view camera and heated side mirrors. Case’s floor-to-ceiling windows and improved lighting system also continue to provide excellent visibility. — www.casece.com