hydraulic cylinder for mine

Hydraulic support column and jack for coal mine are designed for hydraulic support. Double-telescopic, single telescopic and sensor support column can be produced. Applicable to a variety of adverse working conditions under mine, its installation and acceptance are implemented by MT313-92, MT97-92 standards, also be based on user' requirements to adopt the European standards, producing high-end products. Hydraulic support column and jack for coal mine are characterized by corrosion prevention, antifriction, reliable operation, stable pressure maintaining and high safety factor. . Seal ring is selected the international famous brands Hallite products, with reliable and durable sealing, or its up to users. . External surface of active column and secondary cylinder can be plated ceramic or ceramic coating, which have the strength of metals as well as the wearability of ceramics, increasing the service life of 3-5 times.