A2FM motor

A2FM motor is a fixed - displacement axial - piston bent - axis motor. Here is a detailed introduction:

Structural features: It adopts an axial - piston distribution method and a spherical - oil - distribution method. The structure is compact, and the key components such as pistons and valve plates have high processing accuracy and wear resistance.

Working principle: In the A2FM motor, the pistons are arranged diagonally with respect to the drive shaft. When the motor is working, the hydraulic oil enters the cylinder block through the oil inlet port, and under the action of the pressure of the hydraulic oil, the pistons do work and reciprocate in the cylinder holes. The reciprocating motion of the pistons drives the cylinder block to rotate, and then the drive shaft rotates to output torque and speed.

Technical characteristics: It has the advantages of high pressure resistance, with a rated pressure of 400 - 450 bar and a peak pressure of up to 500 bar; high rotation speed, with a maximum speed of 1000 - 8800 rpm; high efficiency, good starting characteristics, and can output a large torque at low speed. In addition, it has a compact design, a small volume - to - power ratio, and can save installation space.

Application scenarios: It is widely used in various fields such as engineering machinery, lifting and transportation machinery, construction machinery, ships, mines, metallurgy, and machine tools. For example, in concrete mixer trucks, it is used to drive the rotation of the mixing drum; in excavators, it is used for the rotation of the turntable and the boom - lifting mechanism; in ships, it is used for deck machinery such as winches and cranes.

Here are the methods for maintaining and repairing A2FM motors:

Daily maintenance

1. Inspect oil quality and level: Regularly check the quality of the hydraulic oil. If there is contamination, water ingress, or oxidation, the oil should be replaced in a timely manner. Also, ensure that the oil level is within the normal range to prevent insufficient oil from affecting the motor's operation.

2. Check for leaks: Examine the connections, seals, and housing of the motor for any signs of oil leakage. If leaks are found, identify the source and replace the damaged seals or components promptly.

3. Monitor operating temperature: Use a thermometer to check the operating temperature of the motor. If the temperature is too high, check the cooling system, oil viscosity, and load conditions to avoid damage to the motor caused by overheating.

Routine maintenance

1. Clean the motor: Regularly clean the exterior of the motor to remove dust, dirt, and oil stains, which helps with heat dissipation and makes it easier to detect potential problems.

2. Tighten connections: Check and tighten all the connection bolts and nuts of the motor to prevent loosening due to vibration, which could lead to oil leakage or poor electrical contact.

3. Inspect the drive shaft and coupling: Examine the drive shaft for wear, deformation, and cracks. Check the coupling for proper alignment and wear to ensure smooth power transmission.

Repair methods

1. Replace damaged components: If components such as pistons, cylinder blocks, valve plates, and bearings are worn or damaged, they should be replaced with new or repaired ones. Ensure that the replacement components are of high quality and meet the motor's technical requirements.

2. Repair seals: When seals are damaged, causing oil leakage, replace them with new seals. Before installation, clean the sealing surfaces and ensure proper installation to prevent leakage.

3. Overhaul the motor: If the motor has serious problems, such as internal component damage or performance degradation, it may need to be overhauled. This involves disassembling the motor, cleaning all components, inspecting for damage, replacing worn - out parts, and reassembling and debugging according to the correct procedures. It is recommended to have professionals perform the overhaul to ensure the motor's performance and reliability.

Bosch rexroth A2FM

Rexroth A2FM specs