torque wrench calibrators power unit folded edit this paragraph

torque wrench calibrators are hydraulic wrench power unit, providing high pressure hydraulic oil for hydraulic wrench powered hydraulic wrench is the unit of execution in a hydraulic system.Hydraulic wrench pumps belonging to the high pressure pump, the maximum working pressure of 70MPa, common with electro-hydraulic pump and hydraulic pump.dial indicating torque wrench by the motor (electrical or gas motors), pumps, piping, electrical controls and other components.Pump common pump two and three stage pumps, generally the secondary pump is a gear pump with low pressure and high pressure piston pump.Gear pumps for pump provided with hydraulic oil, gear pumps and pump for pressure up to 7-10MPa.The diversified structure of the three-stage pump, typical structure of all piston pump, low pressure 4 large diameter piston, 2 small piston diameter, high pressure 2 small diameter piston.Three pumps using a pump to gear pump, two-level and three-level pumping for piston pumps.Triplex pump level, second level, three levels are called low pressure, medium pressure and high pressure.