CAT products: United States CAT company produces CAT backhoe loader series 416, and428, and438, and438D, and442D a dozen kinds of models, The main features of this series is the use of a load-sensing control system, that system uses a swashplate axial piston pump of variable multi-valve signal feedback as well as shuttle valve, pump-valve system composed of a signal feedback system. This system has the following characteristics: within the allowed range of workloads, anywhere in the manipulation of valve opening, can achieve flow basically stable and not under the influence of the load. This hydraulic pump is always appropriate to the output and load pressure and flow, and there is no extra traffic overflow, thus ensuring a reasonable power matching and reduced temperature rising of hydraulic oil to ensure the normal operation of the system. CAT company produces backhoe loaders are equipped with manpower shift transmission with synchromesh, to meet the met product reliability, reduce product cost, on the basis of the purpose. CAT company there are two wheel or four wheel drive available products. Caterpillar 416D excavator-loader: Caterpillar launches new 416D backhoe loader to c series excavator is designed on the basis, with good reliability and strong price competitiveness. Apply to leasing, public facilities and municipal engineering construction. 416D mining mount machine with rotating range for 205° of mining shovel linkage body, can easily mining vertical walls, clip holding material for mount; its rotating angle than c series large 40°; anti-shovel body increased has lifting hole; light of hydraulic control body, manipulation convenient, can regulation; manipulation body and limited bit Manager placed in facilitate of location ; New shovel tooth has a long wear life, easier to replace. 416D application of excavator arm, mounted in the excavation, to provide more room for items to accommodate, narrow arm when the mining horizon more open. 416D when using standard arm, digging depth can reach 4.39M; when you use Extensible arm, reaching 5.51M. The machine is equipped with 55KW 3054B four-cylinder direct injection diesel engine, it can also select 59KW 3054T turbo engine, which runs on the altitude 2300M Shi, no power is reduced, the maximum speed up to 32.8KM/ H. Caterpillar equipped with standard power-shift transmission, you can quickly and easily shift, move forward and backward 4 retaining speed. The machine can switch on the front control panel to select the two-wheel drive or all-wheel drive. 3 shift brake mode device control fully enclosed wet multiple-disc brake system, the operator can select two-wheel-drive brake, two-wheeled all-wheel or all-wheel drive all wheel braking brake mode, slopes and under adverse conditions, you can still guarantee good braking effect. Variable flow load sensing hydraulic system can meet a variety of demands by adjusting the flow pressure, reduced fuel consumption, reduced engine wear. 416D backhoe loader offers 3 modes of operating environment to meet the needs of drivers. Each mode uses the same control and display devices, so you can work more efficiently, easily recognizable white instruments, in line with ergonomic principles of operating equipment layout to facilitate the driver's actions.