A6VM Motor

The A6VM motor is a swash-axis axial piston variable displacement motor under the brand name of Rexroth, which is widely used for hydrostatic transmissions in open and closed circuits, for traveling machines and stationary applications. The following is a detailed description of the A6VM motor:

First, Core Features

1.Skewed shaft design: Adopting skewed shaft axial tapered piston rotor set, compact structure and high power density.

2. Variable control: Displacement can be infinitely adjusted from Vg max to Vg min=0, which can meet the speed and torque requirements under different working conditions.

3. Wide control range: able to meet the requirements of high speed and high torque at the same time, applicable to a variety of complex hydraulic transmission scenarios.

4. Multiple control modes: Hydraulic proportional control (HD), electrical proportional control (EP), two-point hydraulic control (HZ), two-point electrical control (EZ), high-pressure related automatic control (HA), speed related automatic control (DA) and other control modes.

Second, technical parameters

1.Displacement range: covering 28cc/rev to 1000cc/rev, common specifications include 55, 80, 107, 140, 160, 200, 250, etc.

2. Pressure rating:

Nominal pressure: 280bar to 400bar (400bar for sizes 28 to 200, 350bar for sizes 250 to 1000).

Maximum pressure: 350 bar to 450 bar (450 bar for sizes 28 to 200, 400 bar for sizes 250 to 1000).

3. Speed range:

Rated speed: 2700r/min to 4450r/min depending on displacement.

Maximum speed: up to 3600r/min to 7000r/min for displacements less than Vg max.

Third, Application Scenarios

1. Construction machinery: such as excavators, loaders, etc., used to drive the slewing device, traveling system, etc.

2. Industrial machinery: such as injection molding machines, die-casting machines, etc., used to drive the mold closing mechanism, compression and injection mechanism.

3. Marine field: such as rudder, deck machinery, etc., used for ship's maneuvering and operation.

4. Mining machinery: such as drilling rigs, crushers, etc., for mining and crushing operations.

Fourth, selection and maintenance points

1. Selection principles:

Displacement matching: according to the system flow requirements to choose the appropriate displacement, to avoid “big marat small car” or overload.

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

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

2. Maintenance Recommendations:

Oil Management: Regularly check the cleanliness of the oil and replace the oil and filter element in time.

Seal check: Regularly check the shaft seal and end seal to prevent leakage.

Noise monitoring: Abnormal noise may indicate that the oil distribution disk is worn and needs to be serviced in time.

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