in use Hydraulic cylinder We all know that we should always pay attention to its working state and keep it running smoothly. The hydraulic oil plays an important role in the operation of the hydraulic cylinder. Therefore, it is an important job to select the appropriate hydraulic oil. I hope that users will pay attention to it.

When using hydraulic cylinders, we should select good hydraulic oil and select corresponding hydraulic oil products according to relevant standards to avoid some accidents that may be caused. Note that many factors should be taken into consideration in the selection process, such as the climate conditions in the working area, which should be selected according to the local bottom temperature. After selection, appropriate amount of oil should be injected.

Secondly, pay attention to the cleanliness of the hydraulic system, arrange personnel to check regularly, and replace the oil in time when it is found that the oil is deteriorated or contaminated. If the oil level drops, it shall be supplemented in time. When some problems are found, timely inspection and maintenance shall be carried out. After maintenance, the hydraulic cylinder shall be allowed to run stably for a period of time to make the hydraulic oil in the system be used well.

(1) Basic requirements

one choice Suitable hydraulic oil.

2. During operation, the oil temperature should be between 5 ° C and 65 ° C to avoid accelerated aging of seals.

3. The hydraulic oil shall be kept clean, and the oil pollution index shall be 19/16 in the domestic standard.

(2) Packaging, storage and transportation

one Hydraulic cylinder During storage and transportation, it shall be well packed, and the oil port junction surface and the exposed part of the piston rod shall be protected.

2. During storage and transportation, it shall be firmly fixed to prevent bumping.

3. When lifting, it shall be bound firmly to avoid falling and touching.

(3) Disassembly and assembly of hydraulic cylinder

1. Before disassembling the hydraulic cylinder, reduce the oil pressure in the hydraulic cylinder circuit to zero.

2. During disassembly, prevent damage to parts of hydraulic cylinder.

3. As the specific structure of the hydraulic cylinder is different, the disassembly sequence is also different, which should be judged according to the specific situation.

For flange connection type, remove the flange connection screws first, and push out the end cover with screws to avoid damage.

For internal key connection, use the special tool to push the guide sleeve inward. After the key is exposed, take out the key, fill the key slot with nylon or rubber material, and then take it out.

For threaded cylinders, screw off the threaded gland first.

When disassembling the piston rod and piston, the piston rod assembly shall not be pulled out of the cylinder, but the axis of the piston rod assembly and cylinder shall be slowly pulled out in the same straight line.

4. After the parts are disassembled for inspection, the parts shall be kept in a clean environment, and the isolation device to prevent collision shall be installed. Clean the parts before reassembly.

(4) Requirements for working environment

1. The appearance of the hydraulic cylinder shall be rust proof in the wind and rain environment.

2. When working in high temperature environment, thermal insulation device shall be set around the hydraulic cylinder.

4. In dusty working environment, dust prevention facilities shall be installed outside the hydraulic cylinder.