What is an Air Bearing?

An air bearing is a non-contact, frictionless bearing system that operates on a thin layer of pressurized gas. Instead of traditional lubricants, the air itself forms a uniform film between the surface and the substrate. The result is ultra-precise, maintenance-free motion with zero mechanical contact, no friction, high stiffness, and exceptional cleanliness.

An air bearing is a non-contact porous bearing system that works with pressurized gas

Air Bearing Applications & Industries

Air bearings are essential in industries where precision, smooth motion, and minimal friction are critical. They are widely used in:

•Aerospace & Defense – enabling precision positioning, testing systems, and advanced motion control

•Semiconductor Manufacturing – supporting ultra-clean, vibration-free wafer handling and processing

•Manufacturing & Automation – delivering high-speed, high-accuracy positioning systems

•Metrology & Research – providing stable, low-friction platforms for measurement and testing

•Medical & Cleanroom Systems – ensuring contamination-free performance in sensitive environments

Benefits of OAV Air Bearings

OAV Air Bearings are engineered for unmatched performance:

•Zero Friction, Infinite Lifespan – No surface contact eliminates wear, enabling theoretically unlimited motion resolution

•Cleanroom Compatibility – No lubricants or particles, ideal for contamination-sensitive environments

•High-Speed Nano-Precision – Exceptional accuracy, repeatability, and stability even at high speeds

•No Heat Generation – Eliminates thermal distortion for consistent performance

•High Stiffness & Load Capacity – Superior air film control ensures stable and reliable motion

OAV Air Bearings combine precision, durability, and cleanliness - making them the preferred choice for advanced engineering and scientific applications.

Why OAV Air Bearings Are Different

OAV Air Bearings utilize proprietary porous media technology to deliver superior air distribution, resulting in higher stiffness, improved load capacity, and more stable performance compared to traditional orifice-based designs. Our solutions are engineered for ultra-precision applications where consistency, cleanliness, and long-term reliability are critical.

Frequently Asked Questions About Air Bearings

How do air bearings work?

Air bearings operate using a thin film of pressurized air that creates a non-contact interface between two surfaces. Instead of rolling elements or traditional lubrication, the air film supports the load and enables frictionless motion with extremely high precision. OAV Air Bearings utilize proprietary porous graphite (GraphAir®) technology, which distributes air uniformly across the bearing surface for superior stiffness, stability, and reliability compared to conventional orifice-based designs.

What are the advantages of air bearings?

Air bearings offer numerous advantages over traditional mechanical bearings, including:

Zero mechanical contact and near-zero friction
Exceptional positioning accuracy and repeatability
No lubrication required
Cleanroom compatibility
Minimal vibration and noise
Reduced maintenance and wear
High-speed operation with minimal heat generation

OAV GraphAir® porous graphite technology further improves air distribution consistency, allowing for greater load capacity, smoother motion, and enhanced performance in ultra-precision applications.

What industries use air bearings?

Air bearings are widely used in industries where precision, cleanliness, and smooth motion are critical. Common applications include:

Aerospace & Defense
Semiconductor Manufacturing
Medical & Pharmaceutical Equipment
Precision Metrology & Inspection Systems
Advanced Manufacturing & Automation
Optical Alignment Systems
Scientific Research Laboratories
Flexible Electronics & Web Handling

OAV GraphAir® Air Bearings are trusted worldwide in high-performance environments requiring stable, vibration-free motion and long-term reliability.

Do air bearings require lubrication?

No. Air bearings operate using a thin film of pressurized air and do not require oil or grease lubrication. This makes them ideal for cleanroom environments and contamination-sensitive applications such as semiconductor processing, optics, and medical systems.

OAV GraphAir® porous graphite air bearings are specifically engineered to maintain stable air distribution without external lubrication, reducing maintenance requirements while improving cleanliness and operational reliability.

What is porous graphite technology?

Porous graphite air bearings use a permeable graphite material that allows air to pass uniformly through millions of microscopic pores across the bearing surface. This creates an even and controlled air film that improves stiffness, stability, damping, and load distribution.

OAV’s proprietary GraphAir® technology enhances the performance of porous graphite air bearings by delivering:

Superior air flow uniformity
Improved motion stability
Higher load capacity
Reduced vibration
Greater reliability in ultra-precision applications

GraphAir® Air Bearings are designed for advanced motion systems where traditional bearing technologies cannot achieve the required precision, cleanliness, or performance.