Crawling under low speed hydraulic jacks appear to be how to do? We use a hydraulic jack, there is always encounter this or that kind of symptom, is to introduce today small creeping phenomenon on hydraulic jacks appear in the case of low-speed solutions. In the face of low-speed crawling under a hydraulic jack, in order to solve the problem of electric hydraulic jacks, it is necessary from these aspects: the pressure valve pressure instability, when the block through the orifice when the pressure runout large, or adjusting work pressure is too low; the throttle valve is unstable, and in excess of the minimum stable flow valve; output ripple flow pump, fuel uneven; hydraulic cylinder piston rod and the table aspheric deputy connections, especially long hydraulic Do cylinder due to fresh produce from crawling manual jacks, hydraulic cylinders sealed at both ends adjusted too tight, high friction; hydraulic cylinder, outside a large leak, causing the cylinder pressure pulsation changes; lubricants stabilizer failure, causing rail lubrication Oil unstable, sometimes stop. Friction and failed to form 0. 005- 0. 008mm thick film (experience with full-length guide fingers scraping the surface, such as a dripping attached to the hands of the oil does not drip, the film thickness appropriate); lubrication pressure is too low and Workbench also heavy; pipeline resonance; hydraulic jacks imported throttle way and because no back pressure or back pressure regulating mechanism, although a back pressure regulator or agency jack, but a back pressure regulator is too low, so some sort of low-speed area most prone to crawling. A single-acting jack (single acting hydraulic jack) uses the Company's production of RC series of single-acting jack (single acting jack), designed with safety packing device, built-in pressure relief valve to prevent overload, to protect the jack in order to facilitate safe operation. All models are available according to customer requirements and neck dragonfly pattern, bottom mounting holes design makes positioning easy to install package. Mainly used for electric power, construction, machinery manufacturing, mining, railway bridges, shipbuilding and other industries to install equipment from the top demolition job. Second, the characteristics of a single-acting piston jack parts welding of copper, chrome plated piston rod batter, never pull the cylinder, wear strong. Two single-acting design, spring retraction (reset) 3 paint surface to make corrosion-resistant 4 dust ring to reduce pollution and extend the service life of the hydraulic cylinder electric hydraulic jacks, Tongling jacks, hydraulic force provided by the Texas Lu Lu of hydraulic machinery plant . Texas Lu force hydraulic machinery plant (www.luliyeya.com) strong, credible, in Dezhou hydraulic machinery and components industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Lu Hydraulic and you hand into the brilliant, for a better future!