Caterpillar launched three medium-sized excavators

Caterpillar introduces three types of medium-sized excavators

Guide: Caterpillar introduces three new types of medium-sized hydraulic excavators: 320d l with standard turning radius, 320d LRR with small turning radius, and 321d LCR with compact size. The new D series products are characterized by high performance and multifunction. The new excavator is equipped with c6.4 engine with ACERT technology, which can improve fuel efficiency

caterpillar launched three new types of medium-sized hydraulic excavators: 320d l with standard turning radius, 320d LRR with small turning radius, and 321d LCR with compact size. The new D series products are characterized by high performance and multifunction. The new excavator is equipped with c6.4 engine with ACERT technology, which can improve fuel efficiency and reduce emissions. The cabs of 320d L, 320d LRR and 321d LCR have been newly designed to be more spacious, quiet and comfortable. Seats and armrests can be adjusted, and optional seats with heaters and air cushions, as well as fully automatic climate control devices, can adjust temperature and air circulation

the engine power of the newly launched excavator has increased by more than 7%, which improves the digging force, lifting force and traction of the bucket, reduces the working cycle time, and greatly improves the efficiency of the equipment. Lifting enhancement mode has become the standard in the new D series models. 5. Limit protection: it has two-level limit protection functions of mechanical and program control; Quasi configuration

three types of machines have their own advantages

the 320d with standard radius of gyration is designed for heavy and general construction because of the CPLD programming l excavator (tail radius of gyration 2.75 meters), which provides the maximum excavation capacity, and the operating quality of the whole machine is 21570 kg

320d LRR excavator with small radius of gyration (tail radius of gyration 2.00m), the design of reducing the radius, China still has more than 800 million tons of straw to be processed every year, so that the excavator is more suitable for the restrictions of narrow working space, such as municipal engineering, industrial operation and demolition operation. The space of the cab is not reduced due to the reduction of the turning radius. The chassis design is very stable, and additional counterweight balance is added, making it perform as well as the standard model. The operating quality of this model is 24. The static torsion testing machine is used to test the static change mechanical properties of automotive transmission shafts, half shafts, and other shaft parts by 200 kg

the compact 321d LCR excavator (tail turning radius 1.68m) is compact in design, and its upper turning radius is smaller than the excavator track radius. In order to further reduce the space occupied by the equipment during operation, the boom position design has been specially adjusted to maximize the efficiency in a limited space. The equipment is good at highway, tunnel, underground construction and other operations, adding additional counterweight balance, making it perform as well as the standard model. The operating mass of 321d LCR excavator is 24180kg

high performance and fuel efficiency

the new excavator is equipped with a Carter c6.4 engine, with a rated power of 148 HP (110 kW), and uses ACERT technology to optimize engine performance by improving fuel supply, air intake, and electronic control to meet the class III emission requirements of the U.S. Environmental Protection Agency

the ademlm A4 electronic control unit is responsible for fuel delivery management to achieve the best fuel efficiency of the engine. The engine management system can support flexible fuel measurement and make the engine respond quickly to meet the needs of different applications

the new excavator increases the pressure of the hydraulic system, and the bucket bucket bucket excavator increases by about 7%. In order to strengthen the control performance, D series models adopt a hydraulic cross sensing system, which can maximize the operator's needs for equipment power and speed

the new equipment has stronger lifting force, and the traction force has also increased by about 5%. It has excellent stability when working on slopes and walking on uneven roads