Enabling motion in vacuum systems
Hollow axle magnetic fluid feedthroughs transfer rotational motion into a vacuum chamber. They are designed to eliminate gas leaks and contamination. This function is required for systems that need precise motion control. According to industry material, these feedthroughs are widely used in silicon growth, target positioning, sputtering, and plasma etching. The through-bore design allows for cable routing, fiber optics, or sample transfer inside the chamber.
Applications in fabrication processes
In semiconductor manufacturing, these components see direct use. They are employed in wafer testing, ion implantation, and etching systems. Versatile custom ferrofluid seals are proven across the industry. They appear in semiconductor processing equipment and thin-film deposition systems. Their function is necessary for motion control in load locks and transfer chambers. They are also used within optical and surface analysis tools.
Industry developments and integration
Recent announcements point to ongoing fluid improvements in ferrofluidic vacuum rotary feedthroughs for semiconductor manufacturing. One global supplier, Ferrotec, displayed related technology at Semicon West Booth #1332. A trend toward integrated designs is clear. Some manufacturers now offer motor-integrated ferrofluidic vacuum feedthroughs. This approach combines a hermetic feedthrough with a high-precision motor and controller. It creates a compact, integrated sealed rotation system. The design removes integration challenges and potential mechanical failure points found in discrete component setups.
Design considerations for OEMs
The selection of a hollow axle feedthrough involves several specifications. Engineers must consider the ferrofluid formulation, shaft diameter, and flange pattern. These factors are often tailored directly to an OEM's system requirements. Models include hollow shaft KF mounts, cartridge mount hollow shafts, and CF hollow axle configurations. The cartridge mount option provides flexibility for different chamber designs. For power transmission in other applications, solid shaft variants feature extended shafts on both the atmosphere and vacuum sides. These allow direct installation of pulleys or couplings.
We manufacture hollow axle magnetic fluid feedthroughs and related components for these industrial applications.