الوصف

â–      A tandem hydraulic pump plus a single steel casing pump had replaced the previous aluminum outer casing pump, which greatly improves the dust collection effect and the service life of the pump;
â–      The dual-motor-driven rotary head was changed to a standard 490cc displacement single-motor-driven rotary head to meet the needs of high rotation speed conditions;
â–      The overall layout of the body is redesigned to make the center of gravity of the whole machine more stable; triple-grouser track shoes are changed to single-grouser track shoes to enhance maneuverability;
â– In view of the actual working conditions of the construction site, the filter area and the filtering accuracy are increased, and the diameters of the oil suction pipe and the oil return pipe are enlarged, so that the service life of the hydraulic components can be doubled;
â–   The parallel key connection between the rotary head spindle and the sub-spindle is changed to a threaded connection which improves the durability of the connection;
â–      Feeding and pullback chain pins are enlarged in diameter, dust collecting slide seat and positioning sleeve are strengthened, and the structure is more reliable and durable;
â–    The up and down stroke of the dust collecting hood has been increased from 200mm to 300mm, and the storage of 6 drill rods in the front inclined drill rod holder has increased to 9, making the operation more convenient and efficient.