Common faults of Rexroth hydraulic pumps and maintenance methods

1. The installation of the piston pump needs special attention, the direction should not be mistaken, and the direction of the oil filler port should be upward, so that it is more convenient to use in the later stage. And it is necessary to use flexible couplings, which can better avoid any stress generated during the bending process, but the axial error needs to be 0 ...

Rexroth hydraulic pump is mainly divided into three types: piston pump, gear pump and vane pump, among which Rexroth vane pump is a special clamp clamping pump body and pump cover, and the outlet direction of the pump can be in any direction of 360 degrees, which is easy to install and use. The bearing assembly of the sand pump is made of cylindrical structure, ...

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peculiarity 1. Rexroth solenoid valve, solenoid valve and all stainless steel; For highly corrosive media, the diaphragm type must be selected. Neutral medium, it is also advisable to choose a solenoid valve with copper alloy as the housing material, otherwise, rust chips often fall off in the valve housing, especially when the action is infrequent. Ammonia valves ...

1. Adjust the displacement of the pump: The larger the displacement of the hydraulic piston pump, the greater the flow and pressure. The displacement can be adjusted by replacing the displacement of the pump or adjusting the eccentricity distance of the pump. 2. Adjust the valves in the hydraulic system: The valves in the hydraulic system can control the flow and pressure.

1. Rexroth relief valve Overflow, pressure stabilizer, which is used to regulate and maintain the oil supply pressure of the pump while overflowing the excess oil in the system. When the regulated pressure is reached, the hydraulic system is controlled to keep it in a constant state. Relief valves for overload protection are called safety valves. ...

1. The flow direction of the medium should be consistent with the direction of the arrow of the valve body; 2. The differential pressure balance valve should be installed on the return pipe, the valve is connected to the guide pipe, and the other end of the pressure guide pipe is connected with the water supply pipe, and it is recommended to install a 1/2" ball valve at the water supply end of the pressure guide pipe in order to start the function of eliminating blockage; 3、 ...

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(1) Disassembly. For hydraulic valves, although most of the parts are connected by bolts, the hydraulic valve is not disassembled when designed, and if it is forcibly disassembled due to lack of special equipment or lack of professional technology, it may lead to damage to the hydraulic valve. ...

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1. Classification of piston pumps Piston pumps are generally divided into single piston pumps, horizontal piston pumps, axial piston pumps and radial piston pumps 1. Single piston pump It is mainly composed of an eccentric wheel, a plunger, a spring, a cylinder block and two check valves. A closed volume is formed between the plunger and the cylinder bore. Slanting...

A Rexroth hydraulic motor is an actuator of a hydraulic system that converts the liquid pressure energy provided by a hydraulic pump into the mechanical energy (torque and speed) of its output shaft. Hydraulic motors, also known as oil motors, are mainly used in injection molding machinery, ships, hoists, construction machinery, construction machinery, etc.

1. Pressure reducing and stabilizing valve Main features: 1. Piston type with DN65 caliber or above. The life of the diaphragm is increased by more than 3 times; 2. Below DN50 caliber, the original diaphragm is replaced by a flat diaphragm of nylon reinforced rubber, which also improves the service life by more than 3 times. Applicable medium: water, air. Medium temperature ...

Piston pumps are generally divided into single piston pumps, horizontal piston pumps, axial piston pumps and radial piston pumps. Single piston pump The structure consists of an eccentric wheel, a plunger, a spring, a cylinder block, and two check valves. A closed volume is formed between the plunger and the cylinder bore. The eccentric wheel rotates and the column ...

1) If the cylinder body is inlaid with copper sleeve, it can be repaired by replacing the copper sleeve. First of all, trim the diameter of a set of plunger rods to a uniform size, and then polish the outer diameter with sandpaper of more than 1000#. There are three ways to install copper sleeves in the cylinder block: (a) Heating and hot charging of the cylinder block or low-temperature freezing and extrusion of the copper sleeve, interference ...

1) The flow rate of the pump is proportional to the speed and displacement of the pump, and the swing angle of the swash plate can be adjusted steplessly 2) Coaxial structure, which can form a combined pump 3) Position-constrained backhaul structure 4) Spherical distribution, the plunger is arranged obliquely around the main axis 5) Stepless ...

Rexroth vane pump speed selection Rexroth vane pump flow rate and speed linear relationship, relative to low speed screw pump, high speed screw pump can increase the flow and head, but the power is significantly increased, high speed accelerates the wear between the rotor and the stator, must make the screw ...

1. For easy operation and maintenance, the valve is generally installed upright on the horizontal pipeline. 2. The installation of Rexroth pressure reducing valve DR6 must be in strict accordance with the direction of the arrow on the valve body to keep consistent with the direction of fluid flow. If the water quality is not clean and contains some impurities, it must be decompressed at Rexroth ...

1. It plays the role of pressure stabilization and overflow (the valve port is normally open) In the fixed pump oil inlet or return oil throttling speed control system 2. Safety protection function (valve port normally closed) Variable pump hydraulic system, fixed pump bypass throttling speed regulation system and non-throttling speed regulation system. 3. The effect of anti-load 4、 ...

1. First, adjust the pressure adjusting screw of the relief valve to the loosest state, adjust the minimum flow limiter to the minimum state (the adjusting screw of the hydraulic cylinder in the upper part is adjusted to the loosest state), adjust the adjusting screw of the flow control valve to the tightest state, and connect a flowmeter in series after the relief valve; 2. Start-up fluid ...