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Low noise, low vibration Cat C6.6 reduces noise and vibration, improving operator comfort. Hydraulic unit, hydraulic system, hydraulic system pressure is 35000 kPa, and the flow rate of both hydraulic pumps is 205 L/min, improving excavation performance and efficiency. Pilot system, the pilot pump is independent of the individual main pumps, and can control the front connecting rod, slewing and driving operations. Component layout The 320D hydraulic system and the position of the components are well designed to provide a high level of system efficiency. The main pump, control valve and hydraulic tank are close to each other, making the connection lines between the components shorter, thus reducing friction losses and pressure drops. Hydraulic interactive induction system, under any working conditions, the hydraulic interactive induction system can utilize one of the two hydraulic pumps to provide abundant power to the engine. As the speed of the machine increases, the rotation of the pivot is faster and more powerful, and the productivity is also improved. Auxiliary hydraulic valve, the control circuit is provided as an accessory, which enhances the versatility. Can be used to operate hydraulic shears, grabs, hydraulic hammers, shredders, multi-purpose processors, and vibrating plate rammers and other medium and high pressure machines. Boom and Boom Regeneration Circuit. Boom and Boom Regeneration Circuit can save energy during the operation of boom descent and boom retraction, resulting in increased efficiency, shorter cycle time and reduced pressure loss for higher productivity, lower operating costs and better fuel efficiency. Hydraulic cylinder bumper. The bumper is located at the rod end of the boom cylinder and at both ends of the bucket cylinder to absorb shock, reduce noise and extend the service life of the components. Hydraulic start joystick. For enhanced safety, this joystick must be placed in the operating position in order to start all hydraulic control functions of the machine. Temperature control, with a pressurized cab with forced filtered ventilation is standard. Utilizing the switch on the left console, you can choose between fresh air or circulating air. The structure, body design and track roller frame X-shaped box cross-section car body have excellent anti-twisting ability. The crawler support wheel frame welded by the manipulator is a press-formed pentagonal part with high strength and long service life. Main frame, the main frame is exceptionally strong and durable, and makes effective use of materials. Chassis system, the strong and durable Cat chassis system absorbs stress and provides excellent stability. Rollers and idlers, track rollers, sprockets and idlers are all sealed and lubricated, so they have a long service life and can extend the working time of the machine on the construction site. Standard chassis system, the standard chassis system is ideal for those applications that require frequent changes in machine position, restricted work space, uneven or stony floors. Extended chassis system, the extended chassis system (L) offers the best stability and lifting capacity. This long, wide, strong and durable chassis system provides a very smooth working platform. Operating table, Operating table, Operating table ergonomically designed, spacious, quiet and comfortable, ensuring that the operator maintains high productivity during a long day of work. All switches are located on the right console for ease of use. Monitor, Monitor is a 400 X 234 pixel full-color liquid crystal (LCD) graphics display. The monitor angle can be adjusted to avoid sun glare as much as possible and is able to display information in Chinese and 26 other different languages. Manipulator Handle Control Device, Pilot Manipulator Type Manipulator Handle Control Device is labor-saving in operation. Its design allows the operator to maintain a natural wrist and arm posture to maximize the operator's comfort and reduce his fatigue. Seat, which can be adjusted to the standard suspension seat in multiple ways, such as front and rear, height and weight, to suit the operator's body shape and weight. In addition, it is also equipped with adjustable wide armrests and retractable seat belts. Console, the console adopts a simple functional design to reduce the operator's fatigue level, making the switch operation easier and wider field of view. Both consoles are equipped with height-adjustable handrails. Outside the cab, thick steel tubing is used around the bottom edge of the cab, resulting in increased resistance to fatigue and vibration. Cab mount, the cab housing is mounted on the frame with a viscous rubber cab mount, which reduces vibration and noise levels while also improving operator comfort. Windows, in order to maximize the field of view, all glass is glued directly to the cab, there is no car window frame. The windshield above the front can be opened, closed and retracted into the canopy above the operator with a single-button touch release system. Wipers, post-mounted wipers are available in continuous and intermittent modes to expand the operator's field of view. Boom and Boom, Boom, Boom and Accessories, the cab front link has been designed to achieve maximum flexibility, productivity and efficiency in any application. Heavy Duty Boom, the heavy duty boom has been optimally designed to be equipped with two types of boom to maximize excavation range. It also incorporates a large cross section and internal baffle for long service life and durability. The R2.5B1 and R2.9B1 Boom Options are also heavy duty and are made of high tensile strength steel in a large box section design with internal baffle and additional bottom guard. Extra Long Front End Stretch, this Extra Long Front End Stretch Option has a reach distance of up to 15.2 m and is specifically designed for light load applications that require a large working space. Work Tools - Accessories Cat Buckets and CAT GET (Ground Engaging Tools) are designed to best match the machine, ensuring optimum performance and fuel consumption. Manufactured to Caterpillar specifications, they guarantee high quality and durability in any application. Universal Bucket, Universal Bucket is designed for machines that excavate medium abrasive materials such as dirt, fertile soil, gravel and clay with low impact. Heavy Duty Buckets, Heavy Duty (HD) Buckets can be used in a variety of moderately abrasive applications, such as mixed earth, clay, and stone. Heavy Duty Buckets have optimal loading and dumping characteristics, making it easier to empty viscous materials. Its construction is stronger than general purpose buckets. Super Duty Buckets, Super Duty Buckets are best suited for highly abrasive applications such as crushed stone and granite. Tool Control System. The optional work tool control system can maximize the productivity of the work tool by configuring the hydraulic oil flow, pressure, and operator controls to match a specific work tool. The versatility of the system allows it to use a variety of tools. Cat Hydraulic Hammer Cat B Series crushers are high performance and reliable, and are designed to meet the different needs of Chinese customers. They are ideal for demolition, quarrying, mining, general construction and many other applications. Repair and Maintenance, Ground Repair 320D is designed and laid out with the needs of the service technician in mind. Many repair points are easy to operate from the ground, so that repairs and maintenance can be completed quickly and efficiently. Air Filter Chamber, the air filter has a dual filter element structure, so that the filtration effect is better. When the air filter is blocked, a warning message will be displayed on the monitor screen in the cab. Oil pump room, with access door on the right side of the superstructure, can be repaired and serviced on the ground oil pump, pilot filter and oil-water separator with fuel coarse filter. Radiator room, through the access door on the left rear side can be conveniently serviced engine radiator, oil cooler and air-to-air aftercooler, 2nd and 3rd fuel filters and fuel cooler. The radiator is equipped with a water storage tank and a discharge cock, thus simplifying the maintenance work. Vacuum membrane cartridge filter, hydraulic oil return filter is a vacuum membrane cartridge filter, located outside the hydraulic tank. This filter prevents contaminants from entering the system when changing hydraulic oil and maintains a clean operating environment. Remote lubrication points centrally distributed on the lubrication jog arm deliver grease to hard-to-reach front end locations. Fan shrouds, engine radiator fans are completely enclosed within fine wire mesh to reduce the risk of accidents. Anti-skid plates, covered with anti-skid plates on the top of the storage box and superstructure, prevent maintenance personnel from slipping during maintenance. Diagnostic and monitoring 320D's hydraulic system, engine oil and coolant are equipped with S ▪ O ▪ SSM sampling ports and hydraulic test ports. Cat Electronic Technician (Cat ET) service tools have test connections located behind the cab. Extended service cycles The 320D's extended service and maintenance cycles reduce the time it takes to repair the machine and increase its utilization.