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suresh raina Yawei PBH 5 Axis 200T4M CNC Press Brake DELEM DA52S Metal bending machine controller
China YAWEI PBH 5 axis CNC Press brake 220T4M DELEM DA53T Metal Bending Controller
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FAQ: Do you know how to make regular maintenance for hydraulic system of cnc bending machine?
Hydraulic oil is press brake bending system's lifeblood. Keeping the oil clean and make regular replacements are very important for one hydraulic press brake, ensure your press brake pistons are in the upper position.Check the oil level in the bending tank as you would check the oil level for your car. This is a simple visual check that can easily be performed daily. An insufficient oil level will cause serious issues for your pump and it would damage your full hydraulic system.
If your cnc synchro press brake mounted with a wila hydraulic tool clamping system for top punch and lower dies, also check this oil level separately. Wila hydraulic tool holder is usually a separate hydraulic unit with its own oil level indictor.
Dirt small parts or dust may enter the hydraulic block because of insufficient sealing. You ned to ensure the tank cover seals and fliter are in good condition.
Issues could be caused running of the pump and valves may occur if dirt is stuck in the oil. In fact, most of the problems with the hydraulic press brake units are related to dirty oil. Contamination of hydraulic system can cause valves to become jammed in the on or off position and will damage the pump system by input or output less bending pressure.
Every 2,000 hours of bending operation, check the quality of the oil
The following lists should be performed during the 2,000-hour maintenance :
Clean the tank and the suction filters thoroughly before filling. There are usually two filters to clean: the screener filter located on the pump inlet and a high-pressure filter at the pump outlet.
Clean or replace oil filters. Filters that have been exposed to a dirty environment should not be used.
Check the air filter on the oil tank cover.
The oil used in a hydraulic circuit equipped with servo valves must have a cleanliness of 5 microns.
Check the pump and pressure relief valves for maximum pressure.
Also you must be check the condition of hydraulic connections, including lines and hoses, should be checked once a year, as these items may be damaged because of friction.