Professional sales imported from Germany Rexroth hydraulic components and hydraulic system design. Main business products Rexroth pump, Rexroth piston pump, Rexroth vane pump, REXROTH oil pump, REXROTH piston pump, REXROTH vane pumps and other products. Welcome new and old customers to call us to discuss! -------------------------------------------------- ----------------------------- Overview Rexroth Rexroth pump oil pump is powered mechanism of the hydraulic system, which will prime mover (electric motor, internal combustion engines, etc. ) of the mechanical energy into the pressure energy of the liquid. Rexroth pump can be divided into volume and non-volume chamber (Worm) two. There are non-displacement pump, axial flow pump, etc., to make use of the high-speed rotating impeller creates a vacuum suction liquid imports and exports continuous output pressure of the liquid. The pump inlet and outlet connected, efficiency decreases with increasing viscosity of the liquid, and the output and significantly reduce the amount of liquid with the outlet pressure. Positive displacement pump with a closed space changes in volume to achieve suction and compression of oil. Conduct suction when the enclosed volume from small to big, from big oil pressure-hour. Typically Rexroth piston pump, the plunger is pulled out from the cylinder bore suction pressure when pressed into oil. The pump inlet and outlet are separated, efficiency depends on the viscosity of each process on the structure and the oil gap between the moving parts separated by suction pressure oil chamber and the like. The higher the viscosity, the higher the efficiency, the amount of oil remained almost constant (due to a slight impact efficiency, in addition the pressure was increased to 18MPa, the fluid will be compressed by 1%). -------------------------------------------------- --------------------------------- Rexroth Rexroth pump how to implement variable axial piston pump variable by changing the plunger stroke (change the variable head angle); Rexroth variable radial piston pump by changing the stator eccentricity. -------------------------------------------------- --------------------------------- Rexroth oil pump and self-absorption Rexroth piston pump has a certain self-absorption capacity, but should not exceed the height of self-absorption of 500mm, and Do not install filters on the suction pipe, suction pipe diameter not less than the recommended value, another must take self-priming pump when first raised to full declination. When the speed exceeds 1500rpm, should adopt the oil, the oil pressure is about 0.7MPa. In the open system for the pump flow rate of 130% should be for the pump in a closed system for the pump flow rate should be for 35% of the pump. -------------------------------------------------- --------------------------------- REXROTH pump application 1, REXROTH piston pumps are generally used for machine tools, metallurgy, forging hydraulic transmission, mining and lifting machinery, especially widely used in high-power hydraulic system. 2, REXROTH vane pump is generally used mainly in mining, coal, metallurgy, chemical industry, environmental protection and other industries. The sand pump more general sense refers to the environmental protection, dredging, dredging and other industries more. This series sand pump to ES or G series more. In addition, there are many types called sand pump, SB sand pump oil fields, PS series of mining sand pump on and so forth. This article describes the main sand pump to use crushed sand dredging ES or G series, the environmental protection industry in the usual sense. 3, REXROTH gear pump for conveying petroleum, chemicals, paints, dyes, food, oil, and other industries in Newtonian and non-Newtonian liquid liquid, the liquid can be transported kind of light, volatile liquid, until the heavy, viscous, even semi-solid liquid. -------------------------------------------------- --------------------------------- REXROTH oil pump Rexroth pump classification has three categories: Rexroth piston pumps, vane pumps Rexroth Rexroth gear pump, REXROTH Rexroth piston pump depending on the tilt element, there are two swashplate and Cline. The swash plate type is a relative rotation of the swash plate has an inclination angle of the cylinder, causing the plunger reciprocates in the pump cylinder. The drive shaft axis and the axis of the cylinder is the same. This structure is relatively simple, high speed, but the working conditions require high, the contact end portion of the plunger and the swash plate is often the weak link, REXROTH vane pump is only a specific application of the centrifugal pump and the name. Essentially sand pump is a general name for Rexroth gear pump is the use of an internal gear meshing theory, both inside and outside the pitch circle of the gear close to one side, the other side is the pump cover "crescent board" separated. Active internal gear driven spindle is rotated in the same direction in which the outer gear, the gear separated from each other to form a negative pressure at the inlet and the suction liquid. REXROTH piston: Cline swash plate axis is consistent with the shaft axis. It is due to the plunger cylinder inclined at an angle relative to the shaft the plunger reciprocates. Flow regulation relies on the swing angle of the cylinder plunger to achieve, so some also known as swing cylinder type. It is compared with swashplate, reliable, high traffic, but the complex structure. Comparison of axial piston pumps and radial piston pump discharge pressure is high, it generally work within 20 ~ 50MPa range, high efficiency, small radial size, compact structure, small size, light weight. But the structure is more complex radial piston pump, manufacturing requirements, expensive. To improve efficiency, the axial piston pump should in general by block, oil pan, the plunger and the swash plate and other major parts. The cylinder has a plurality of pistons, plungers are axially aligned, i.e., parallel to the center line of the plunger axis of the drive shaft, so called axial piston pump. However, it is different from the reciprocating piston pump, the plunger is not only because of its reciprocating motion in the pump cylinder and piston and the pump cylinder and a rotating movement relative to the swash plate. Plunger with a spherical tip contact with the swash plate. On the oil pan has a moon-shaped grooves high and low pressure, they are separated from each other by a partition, to guarantee a certain tightness, which are in fluid communication with the inlet of the pump and the oil port. A tilt angle between the swash plate and the axis of the cylinder axis. REXROTH vane pump: Usually mainly used in mining, coal, metallurgy, chemical industry, environmental protection and other industries. The sand pump more general sense refers to the environmental protection, dredging, dredging and other industries more. REXROTH vane pump before work, the first pump is filled with liquid, and then start the pump, impeller rapidly rotating blades of the impeller driven liquid rotates, the outer edge of the impeller to rely on the inertia of the liquid flow while rotating impeller sucked into the liquid from the suction chamber, In this process, a liquid flow around the impeller blades, the liquid movement in the flow around the blade action of a lift, which in turn lift the blade at an equal and opposite force is applied to the liquid direction, the force acting on the liquid , so that the liquid flowing out of the impeller to obtain energy, then the kinetic energy and the pressure energy of the liquid was increased. REXROTH effect rotation of the impeller vane pump liquid rely on the prime mover of the mechanical energy transferred to the liquid. Since the centrifugal effect of the liquid from the impeller inlet toward the outlet of the process, the speed can be increased and the pressure energy is being discharged through the liquid pressed out of the impeller chamber, most of the velocity energy is converted into pressure energy, and then transported along the discharge line out, then, at the inlet of the impeller due to the discharge of the liquid to form a liquid of vacuum or low pressure, water in the pool below the liquid level pressure (atmospheric pressure) under the action is pressed into the inlet of the impeller, therefore, the rotation of the impeller on a continuous to suction and discharge liquid. REXROTH vane pump with its simple structure, easy maintenance, high efficiency and become one of the most widely used on agricultural pumps, but also due to mention no water and people feel more trouble. -------------------------------------------------- --------------------------------- REXROTH structure of a pump, plunger cylinder piston pump which is due to the relative transmission axis inclined at an angle of the plunger reciprocates. Flow regulation relies on the swing angle of the cylinder plunger to achieve, so some also known as swing cylinder type. It is compared with swashplate, reliable, high traffic, but the complex structure. Comparison of axial piston pumps and radial piston pump discharge pressure is high, it generally work within 20 ~ 50MPa range, high efficiency, small radial size, compact structure, small size, light weight. But the structure is more complex radial piston pump, manufacturing requirements, expensive. 2, REXROTH vane pumps are horizontal, single centrifugal pump casing structure. Using special clamps grip pump and pump cover, the pump discharge outlet direction at any one position 360 degrees, easy to install. Sand pump bearing components using cylindrical structure, easy to adjust the gap between the impeller and the pump housing, maintenance can be integrally removed. Bearings with grease lubrication. There are sand pump shaft seal packing seal, expeller seal and mechanical seal. Sand pump runner spacious, cavitation performance, high efficiency and abrasion. 3, Rexroth gear pump is the use of an internal gear meshing theory, both inside and outside the pitch circle of the gear close to one side, the other side is the pump cover "crescent board" separated. Active internal gear driven spindle is rotated in the same direction in which the outer gear, the gear separated from each other to form a negative pressure at the inlet and the suction fluid, gear at the exit of the continuous engagement of the liquid squeezed embedded output. Because of this unique structure, it is particularly suitable for conveying the viscosity of the medium, the viscosity ranges: 0.2-1000000cp can reverse transport, as long as you can replace the motor turning; Rexroth pump can be turned to the ring, import position at right angles to facilitate Optional import and export position; Rexroth gear pump between the pump, cover, bearing has convenient access to the interface connector insulation or cooling medium. REXROTH engagement: a free trapped oil phenomenon, smooth delivery, high efficiency, low noise, the service life of the plant advantages. Internal gear pump for conveying petroleum, chemicals, paints, dyes, food, oil and other industries in Newtonian and non-Newtonian liquid fluid, transmission fluid may be the type of light, volatile liquid, until the heavy, viscous, or even half solid-state liquid. -------------------------------------------------- --------------------------------- REXROTH REXROTH axial piston pump applications typically used in machine tools, metallurgy, forging , mining and lifting machinery, hydraulic transmission system, particularly widely used in the hydraulic transmission power. REXROTH vane pump is generally used mainly in mining, coal, metallurgy, chemical industry, environmental protection and other industries. The sand pump more general sense refers to the environmental protection, dredging, dredging and other industries more. This series sand pump to ES or G series more. In addition, there are many types called sand pump, SB sand pump oil fields, PS series of mining sand pump on and so forth. This article describes the main sand pump to use crushed sand dredging ES or G series, the environmental protection industry in the usual sense. REXROTH gear pump for conveying petroleum, chemicals, paints, dyes, food, oil and other industries in Newtonian and non-Newtonian liquid fluid, transmission fluid may be the type of light, volatile liquid, until the heavy, viscous, or even semi-solid liquid. -------------------------------------------------- --------------------------------- specifications 10-140 axial piston swash plate structure open loop 31 series ( Specifications 18-140) 52 series (Size 10) controller and a wide range of active products (see below) with the specifications of the through shaft structure, can form a combination pump (not including size 10) two, A10VSO models (31 and 52 Series) Specifications 10-140 axial piston swash plate structure open loop 31 series (sizes 18-140) 52 series (Size 10) a wide range of controllers and Active products (see below) with the specifications of the through shaft structure, can form a combined pump ( does not include specifications 10) REXROTH A10VSO variable piston pump 31R series of open-loop RC 92 711 / 09.00 standard 28 .... 140 31R series Rated pressure 280 bar peak pressure 350 bar ----------- -------------------------------------------------- -------------------------- Rexroth pump features: - Structure for swash plate hydraulic open circuit axial piston variable pump - flow proportional to drive speed and displacement, and by adjusting the swash plate angle stepless variable - ISO standard mounting flange - Flange connections to SAE Metric - there are two housing vent hole - Excellent suction performance - allows continuous operation pressures up to 280 bar - low noise - long life - can withstand axial and radial shaft loads - high power / weight ratio - a wide range of diverse forms of control - control response time is short - with through shaft structure, can be used multi-loop system ----------------------------------------------- ---------------------------------------------- model selection of reference Explanation: Example Model: A10VSO18DFR1 / 31R-PPA12N00 A10VS → swash plate type variable displacement pump, this series of industrial drive, nominal pressure 28MPa, the maximum pressure 35MPa; O → operation mode, this series is for open-loop system; 18 → Displacement Specifications This model is 18m3 (otherwise 10,28,45,71,100,140 other common specifications displacement) DFR1 → control mechanism, (DG represents two controlled direct drive; DR (G) form; shows the pressure control remote control ; DFR (1) a pressure / flow control; means having an oil passage without X orifice; DFLR pressure / flow / power control; FHD flow control, and the pilot control of the pressure with pressure; FE1 ** electrically controlled flow rate; DFE1 ** pressure / flow electronically controlled; ED electro-hydraulic pressure control); 31 → product line R → rotational direction (R clockwise, L counterclockwise) P → seal (P refers to the NBR with FKM seal (NBR, in line with DIN ISO 1629), V refers to the FKM (Buddha rubber, in line with DIN ISO 1629)) P → shaft (P refers to a straight shaft with key DIN 6885, S refers to the spline shaft SAE, R refers to the spline shaft SAE (high-pass axle drive torque)); A → mounting flange holes (A refers to the ISO 2-hole, B refers to the ISO 4 holes); 12 → work port connection, port B {pressure suction port S} in the opposite direction, SAE ports Metric fixing screws; N00 → through shaft, (N00 without through drive; there through drive with axial pumps, gear pumps back to the radial piston pump KB2, K51, KB3, K01, etc.) ------- -------------------------------------------------- ----------------------------------------- conventional models: Germany Rexroth piston pump A4VSO 40 Displacement: A4VSO40DR / 10R-PPB13N00 A4VSO40LRG / 10R-PPB12N00 Germany Rexroth piston pump A4VSO 71 Displacement: A4VSO71DR / 10R-PPB13NOO A4VSO71DR / 22R-PPB13N00 A4VSO71DR / 30R-PPB13NOO A4VSO71LRG / 10R-PPB12N00 Germany Rexroth piston pump A4VSO 125 Displacement: A4VSO125DR / 30R-PPB13NOO E-A4VSO125DR / 30R-PPB13N00 Germany Rexroth piston pump A4VSO 180 Displacement: A4VSO180DFR / 22R-PPB13N00 A4VSO180DR / 30R-PPB13N00 A4VSO180EO2 / 30R-PPB13N00 A4VSO180LR2 / 30R E-A4VSO180DR / 30R- PPB13NOO A4VSO250 A4VSO355 E-A4VSO355DR / 30R-PPB13NOO A4VSO500 Germany Rexroth piston pump A10VSO 10 Displacement: A10VSO10DR / 52R-PPA14N00 Germany Rexroth piston pump A10VSO 18 Displacement: A10VSO18DR / 31R-PPA12N00 A10VSO18DR / 31R-PPA12K01 A10VSO18DFR1 / 31R- PPA12N00 A10VSO18DFR1 / 31R-PPA12K01 A10VSO18DFR / 31R-PPA12N00 A10VSO18DFLR / 31R-PPA12N00 A10VSO18DG / 31R-PPA12N00 A10VSO18DRG / 31R-PPA12N00 A10VSO18DFE1 / 31R-PPA12N00 A10VSO18FHD / 31R-PPA12N00 A10VSO18ED / 31R-PPA12N00 Germany Rexroth piston displacement A10VSO 28 : A10VSO28DR / 31R-PPA12N00 A10VSO28DR / 31R-PPA12K01 A10VSO28DFR1 / 31R-PPA12N00 A10VSO28DFR1 / 31R-PPA12K01 A10VSO28DFR / 31R-PPA12N00 A10VSO28DFLR / 31R-PPA12N00 A10VSO28DG / 31R-PPA12N00 A10VSO28DRG / 31R-PPA12N00 A10VSO28DFE1 / 31R-PPA12N00 A10VSO28FHD / 31R- PPA12N00 A10VSO28ED / 31R-PPA12N00 Germany Rexroth piston pump A10VSO 45 Displacement: A10VSO45DR / 31R-PPA12N00 A10VSO45DR / 31R-PPA12K01 A10VSO45DFR1 / 31R-PPA12N00 A10VSO45DFR1 / 31R-PPA12K02 A10VSO45DFR / 31R-PPA12N00 A10VSO45DFR / 31R-PPA12K01 A10VSO45DFR / 31R- PPA12K26 A10VSO45DFLR / 31R-PPA12N00 A10VSO45DG / 31R-PPA12N00 A10VSO45DRG / 31R-PPA12N00 A10VSO45DFE1 / 31R-PPA12N00 A10VSO45FHD / 31R-PPA12N00 A10VSO45ED / 31R-PPA12N00 Germany Rexroth piston pump A10VSO 71 Displacement: A10VSO71DR / 31R-PPA12N00 A10VSO71DR / 31R- PPA12K01 A10VSO71DFR1 / 31R-PPA12N00 A10VSO71DFR1 / 31R-PPA12K02 A10VSO71DFR / 31R-PPA12N00 A10VSO71DFR / 31R-PPA12K27 A10VSO71DFLR / 31R-PPA12N00 A10VSO71DG / 31R-PPA12N00 A10VSO71DRG / 31R-PPA12N00 A10VSO71DFE1 / 31R-PPA12N00 A10VSO71FHD / 31R-PPA12N00 A10VSO71ED / 31R- PPA12N00 Germany Rexroth piston pump A10VSO 100 Displacement: A10VSO100DR / 31R-PPA12N00 A10VSO100DR / 31R-PPA12K01 A10VSO100DFR1 / 31R-PPA12N00 A10VSO100DFR1 / 31R-PPA12K01 A10VSO100DFR / 31R-PPA12N00 A10VSO100DFLR / 31R-PPA12N00 A10VSO100DG / 31R-PPA12N00 A10VSO100DRG / 31R- PPA12N00 A10VSO100DFE1 / 31R-PPA12N00 A10VSO100DFE1 / 31R-PPA12K02 A10VSO100FHD / 31R-PPA12N00 Germany Rexroth piston pump A10VSO 140 Displacement: A10VSO140DR / 31R-PPB12N00 A10VSO140DR / 31R-PPB12K01 A10VSO140DFR1 / 31R-PPB12N00 A10VSO140DFR1 / 31R-PPB12K01 A10VSO140DFR / 31R- PPB12N00 A10VSO140DFLR / 31R-PPB12N00 A10VSO140DG / 31R-PPB12N00 A10VSO140DRG / 31R-PPB12N00 A10VSO140DFE1 / 31R-PPB12N00 A10VSO140DFE1 / 31R-PPB12N002 A10VSO140FHD / 31R-PPB12N00 A10VSO140ED / 31R-PPB12N00 Germany Rexroth vane pump PV7 Series: PV7-11 / 06-10RA01MA0 -10 PV7-16 / 10-14 PV7-16 / 10-14RE01MZ0-16 PV7-17 / 10-20RE01MCO-10 PV7-17 / 16-20RE01MC0-16 PV7-17 / 16-30RE01MCO-08 PV7-18 / 100 -118RE07MC0-16 PV7-1X / 10-14RE01MCO-10