ESX20M-E016 flange connection high-speed rotary joints

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Connection form: flange connection (some data mistakenly labeled as “sleeve type”, but E016 series is clearly flange type, distinguished from L/S/E suffix);
Working medium: water-based/oil-based coolant, oil mist, dry air;
Pressure range: 0.5-14 MPa (can reach about 20 MPa in a short time, customized);
Maximum speed: ≤ 40000 min ⁻¹;
Allowable stroke: 4.5 mm (standard, some materials mention optional 8 mm or 17 mm, but the E series is usually a fixed or short stroke bearingless structure);
Temperature range: ≤ 60-180 ℃ (depending on the sealing material and medium, the coolant working condition is generally ≤ 60 ℃, and steam/hot air can reach higher temperatures);
Structural features: no built-in bearings (relying on spindle support), low sliding resistance seal (commonly equipped with silicon carbide/carbon graphite pair), stainless steel shell, requiring axial/radial support from the spindle;
Typical applications: Cooling or airtight supply for machining centers, gun drilling machines, and hollow motor spindles, not suitable for high thrust or cantilever load scenarios;

This series of bearingless rotary joints consists of a fixed part ha installed in a protective cover and a rotating part of the main shaft, without bearings.
Due to the absence of built-in bearings, the vibration of this series of rotary joints is small, and their compact size contributes to the miniaturization of machine tools.
Because the sealing material is made of ceramics that are hard, have good thermal conductivity, and self-lubricating properties, even when using coolant mixed with cutting chips
It can also maintain high-speed rotation and achieve a longer service life.
Due to its independent sealing, it can also correspond to MQL cutting (oil mist containing only a small amount of oil) and completely dry cutting (completely dry air).
Can achieve high-pressure coolant, MQL (oil mist), and dry gas dual-use.
The individually sealed structure enables long travel to be achieved. Especially for small long stroke models, the combination of machining and lathe can be achieved.