ESX20M-756YSUS CNC machine tool high-speed rotary joints

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ESX20M-756YSUS is a Japanese RIX (ROCKY JOENT) brand ESX20M series high-speed rotary joint designed specifically for CNC machine tool spindles, suitable for high-speed working conditions with dry air, oil mist (MQL), or coolant containing debris
The maintainability and replaceability of the embedded rotating joint of the bearing are good. In the past, bearing damage, especially when used in a horizontal position, caused by vibration or coolant leakage, has become a problem. The LX series has achieved a longer service life due to its improved bearing support and discharge structure. This seal can withstand a mixture of fragments and foreign objects. Rocky Joint uses highly wear-resistant and self-lubricating silicon carbide, which can be used with coolant for a long time in environments where debris mixing cannot be avoided. If not used with coolant, it can also operate at high speed. In high-speed operation without coolant, the heat generated on the seal becomes a challenge. The LX series is equipped with an automatic sealing operation/closing device, which can even be used for high-speed operation without coolant. This seal adopts a unique sealing shape, which can not only be used for ultra high speed drying operation, but also can be used together with high-pressure coolant to achieve leak free operation.