42 results about "Hydraulic shock" patented technology

Hydraulic shock occurs when oil rapidly starts or stops flowing in a hydraulic system. The oil flow rate in the pressure line of systems below 3,000 psi is usually 15-20 feet per second. In systems above 3,000 psi, the flow rate can be as high as 30 feet per second. Shock can also occur when an external force acts on a hydraulic cylinder or motor.