Oblique structure to a piston pump hydraulic pump for open loop hydrostatic drive - traffic and drive speed and displacement proportional. By adjusting the oblique axis infinitely adjustable flow - inclined axis of rotation of the plunger-shaped structure to a dimension group - infinitely variable displacement - Compact solid bearing system, long service life - Optional long-life bearings - Good performance in a weight ratio sealed volume pump are relying on the principle of changes to the work, it is generally referred to as a positive displacement pump plunger 2 is mounted on the cylinder 3 to form a sealed volume a, under the action of the spring plunger 4 is always pressed on the eccentric 1. A prime mover driven eccentric rotation of the plunger 2 reciprocates, so that the size of a sealed volume generation cycle [2] of alternates. When a from small to large, a partial vacuum is formed, so that the oil tank at atmospheric action pump sales, the suction tube to open the top one-way valve 6 into the oil chamber a suction is achieved; on the contrary pump repair, when a by a large agent becomes small pump, a suction chamber full of oil will top open the check valve 5 into the system and achieve oil pressure. Such pump to the prime mover input mechanical energy into fluid pressure energy, the prime mover driven eccentric continues to rotate, the pump will continue to suction and pressure oil. Hydraulic pump repair _ _ creating a hydraulic factory direct crystal grain from Jinan 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!