Qualitative analysis is the main virtue of folding the analyst's intuition, experience, with the object of analysis of continuation of past and present situation and the latest information, the analysis of the object's nature, characteristics, development of a method to determine changes in the law to make. In contrast, the former method is more scientific, but requires a higher depth of mathematical knowledge of the hydraulic motor for sale, while the latter method, though more rough, but the data were insufficient or analysis mathematical foundation is weak when comparing applicable hydraulic motor installation more suitable for the average investor and economic workers. But it must be noted that two methods of mathematical knowledge requirements, although there are high and low maintenance hydraulic motor, but it does not regard the qualitative analysis and quantitative analysis distinct from open. In fact, modern qualitative methods also have to be calculated using mathematical tools, and quantitative analysis must be established on the basis of qualitative prediction, the two complement each other, based on qualitative and quantitative, qualitative and quantitative is specific, combine them flexibly in order to achieve the best results. Variable motor applications on the crane collapsed Edit this paragraph crane hoisting motor performance will directly affect the efficiency of the machine, but also related to personal and machine safety. So understanding crane hoisting motor structure and working principle, maintenance and use of cranes are essential. In order to ensure crane reliability and safety of the hydraulic motor, and the motor factory Xuzhou Heavy plant joint research, introduced a new variable motor, the motor is a hydraulic variable control stress-related manner, allowing the motor displacement stepless change with the pilot pressure signal. Hydraulic motor installation, hydraulic motors, hydraulic preferred by the Jinan Jing Jing Chong Chong Hydraulic Machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) strong, credible, in Jinan, Shandong mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead crystal create hydraulic and you hand into the brilliant, for a better future!