A10VSO Pump

A10VSO pump is a swash plate axial piston variable pump under the brand name of Rexroth, which is mainly used for hydrostatic transmission in open circuit. The following is a detailed introduction of A10VSO pump:

First, core features

1.swash plate structure: the swash plate design is adopted, the plunger contacts with the swash plate through the sliding shoe, when the cylinder is rotated by the drive shaft, the swash plate pushes the plunger to reciprocate, so as to realize the oil suction and discharge.

2. variable control: stepless variable is realized by adjusting the angle of rotating swash plate to meet the flow demand under different working conditions.

3. High-pressure performance: Nominal pressure up to 280bar (28MPa), maximum pressure up to 350bar (35MPa), suitable for high-pressure hydraulic systems.

4. low noise and low pulsation: optimized design reduces operating noise and pressure pulsation, improving system stability.

5. High volumetric efficiency: volumetric efficiency ≥ 95%, reducing energy loss and improving system efficiency.

Second, technical parameters

1.Displacement range: covering from 10cc/rev to 140cc/rev, common specifications include 18, 28, 45, 71, 100, 140, etc., to meet the needs of different equipments.

2. Speed range:

Rated speed: 500-3000r/min.

Maximum speed: according to different displacements, the maximum speed can be up to 2200-3600r/min (e.g. the maximum speed is 2200r/min when the displacement is 100).

3. Control mode:

Constant pressure control (DR): automatically reduce the displacement when the system pressure reaches the set value to maintain stable pressure.

Constant flow control (FR): Adjust the flow rate according to the load demand and keep the output flow rate constant.

Constant power control (DFLR): Combine pressure and flow to realize constant power output.

Proportional flow control (ED): through the electrical signal to achieve proportional adjustment of flow.

Third, Application Scenarios

1. Industrial field:

Hydraulic station: Provide stable hydraulic power for machine tools, die-casting machines, etc.

Injection molding machine: drive the mold closing mechanism to achieve high-precision injection molding.

2. Construction Machinery:

Excavators: drive the rotary device to improve operational efficiency.

Concrete Pump Truck: Control the distribution valve to ensure continuous delivery of concrete.

3. Mining Machinery:

Drilling Rig: Provide high-pressure hydraulic power to drive the rotation of drilling tools.

Crusher: Adjust the crushing strength to adapt to different materials.

4. Marine field:

Helm: precisely control the ship's heading.

Deck machinery: driving cranes, anchors and other equipment.

Fourth, Selection and Maintenance

1. Selection Principle:

Displacement Matching: Select the appropriate displacement according to the flow demand of the system, avoiding “big horse pulling small car” or overloading.

Pressure fit: ensure that the maximum pressure of the pump is higher than the maximum pressure of the system 10% -15%.

Speed limitation: Long-term operation speed should not exceed 80% of the rated value. 2.

2. Maintenance Recommendations:

Fluid Management: Check fluid cleanliness (NAS 6 or below) every 500 hours and replace fluid regularly.

Seal inspection: Replace the shaft seal every 1000 hours to prevent leakage.

Noise monitoring: Abnormal noise (>85dB) may indicate wear of the oil distribution disk, requiring timely maintenance.

Installation specification: Ensure the pump body is level when installing vertically to avoid insufficient oil suction; place the oil drain port on the top when installing horizontally.

Rexroth A10VSO series 31

A10VSO manual