ASML 8790366 Air Puck Bearing Assembly – Precision Motion Support for Semiconductor Systems
The ASML 8790366 air puck bearing assembly, also known as part numbers 879-0366-001 and 868-1064-003, is a precision motion support component used in semiconductor manufacturing equipment. This air bearing assembly provides frictionless support and positioning for wafer stages and other precision motion applications.
Air Bearing Technology
The assembly utilises air bearing technology to provide frictionless motion with high precision. Compressed air creates a thin film that supports the load without contact, eliminating wear and providing extremely smooth movement. The design ensures stable support and minimal vibration.
Design and Construction
The air puck bearing features a precision-machined housing with integrated air passages and orifices. The construction uses materials selected for stability and compatibility with cleanroom environments. The assembly includes connections for air supply and mounting points for system integration.
Functional Role in Semiconductor Equipment
This bearing assembly is used in wafer stages and positioning systems, providing precise and stable motion for lithography and inspection processes. Its frictionless operation supports high-speed positioning with nanometer-level accuracy.
Performance Characteristics
The bearing provides specified load capacity, stiffness, and accuracy characteristics. Its performance is verified through testing to ensure consistent operation.
Applications
This air bearing is used in semiconductor lithography systems, inspection equipment, and other precision positioning applications in semiconductor manufacturing.
Maintenance and Support
ASML provides documentation and support for this air bearing assembly. Maintenance includes inspection of air supply and cleanliness.
Conclusion
The ASML 8790366 air puck bearing assembly delivers precision motion support for semiconductor equipment, enabling accurate positioning and stable operation.




