Crane used high-pressure automatic control variable motor repair hydraulic motor, which is the minimum initial displacement displacement, the output torque and the minimum speed the fastest, not artificially control the speed of the hydraulic motor repair, difficult to meet the most stable mechanical slow start, in particular When starting the crane as a liter motor, when the weight in air travel after the second lifting of the moment, because of the small motor output torque can not lift heavy weights and the emergence of the phenomenon of falling seriously affect safety, is lifting machinery taboo. The use of a simple pilot pressure control, although the operator can easily be controlled motor speed, but it is difficult to accurately perceive the situation and make a quick motor load operation. In order to ensure the safety of the operator, only to motor slow work, but reduces the efficiency of machinery. Modern construction machinery demand and growing varieties, especially excavators and loaders and other equipment in the traditional models and products based on the basis, together with the hammer, hydraulic shears, hydraulic ram, hydraulic gripper, hydraulic drills, hydraulic screen, hydraulic saws, hydraulic cranes, hydraulic tools and other aids sweep, led to many complex functions of variable products. As the hydraulic technology has the power to weight ratio, large configuration flexibility, power transmission and easy control characteristics, which are widely used in various engineering machinery, hydraulic engineering machinery have emerged, and now want to find a way without using any hydraulic components engineering machinery has been easy. The hydraulic motor parts, crystal creating hydraulic price (certification), a hydraulic motor provided by the Jinan Jing Chong Hydraulic Machinery Co., Ltd .. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) Shandong Jinan, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the crystal creating hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal creating hydraulic better future.