Linear Air BEARING GUIDES

Ultra-Precision Motion with or without Direct Drive Motors

OAV Linear Air Bearing Guides deliver ultra-precision motion by eliminating mechanical contact through GraphAir™ bearing technology. These systems provide exceptional straightness, stiffness, and repeatability, achieving micron-level accuracy over long travel distances.

By combining a precision-ground guide rail with a uniform pressurized air film, OAV linear guides ensure smooth, vibration-free motion with zero wear and minimal maintenance. Designed for high-performance applications, they offer long-term reliability in semiconductor manufacturing, metrology, and advanced automation systems.

Available in both motorized (direct drive) and non-motorized configurations, OAV linear air bearing systems integrate seamlessly into new or existing designs.

Ultra-Precise Linear Motion

Porous graphite air bearing technology creates a uniform pressurized air film, enabling frictionless, non-contact motion with exceptional straightness, stiffness, and repeatability across long travel distances.

LINEAR AIR BEARING GUIDES DESIGN GUIDE & SPECIFICATIONS (PDF)

Download our comprehensive guide with detailed specifications, dimensions, load capacities, and engineering data to help you select the right air bushing for your application.

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Performance Specifications & Tolerances

Dovetail Series Motorized 150 mm x 150 mm

Part #OAVDOV150150-M100

The DOV150150-M100 is the motorized evolution of the Dovetail-Series, combining OAV’s precision dovetail linear air bearing guides with a fully integrated drive system for turnkey ultra-precision motion. Engineered for applications requiring smooth, vibration-free, and maintenance-free linear movement, this system delivers nanometer-level positioning with reliable repeatability.

Manufactured from premium aircraft-grade materials, the Dovetail-Series guide features a porous graphite air bearing surface that ensures uniform air distribution and optimal stiffness. The vacuum-preloaded design locks the carriage in place while maintaining non-contact operation, providing ultimate accuracy and eliminating stick-slip or mechanical wear.

The integrated motorized drive is factory-aligned with the guide, creating a plug-and-play solution that simplifies installation and reduces integration time. Like its non-motorized counterpart, the system includes a pre-tensioned brake function for stable positioning under load, now combined with precise, controllable motion via the motor.

Dovetail Granite Series 775 mm x 1200 mm

Part #DOV7751200

The OAV Granite Guide and Vacuum Preloaded Linear Dovetail Stage delivers ultra-precise linear motion where stiffness, smoothness, and stability are essential. Its granite guideways provide unmatched flatness, thermal stability, and structural rigidity, while the vacuum preloaded system ensures zero-contact, frictionless operation with consistent stiffness and repeatable motion. Made with porous graphite material

Dovetail Series 150 mm x 150 mm

Part #DOV150150

The OAV Profile Dovetail-Series Rail Guides are manufactured using premium grade aircraft quality material with precise linear accuracy and flatness that is vibration-free and provides for maintenance-free motion. The guide comes ready to install, with an integrated locking brake function resulting from the pre-tensioning of the air bearing, allowing for ultimate accuracy and positioning. Made with porous graphite material

Dovetail Series 150 mm x 300 mm

Part #DOV150300

T-Series Vacuum Pre-loaded

Part #TS7575

The OAV Profile T-Series Rail Guides are manufactured using premium grade aircraft quality material. The OAV Vacuum Preloaded Air Bearing combines the use of air pressure and vacuum to be held down while simultaneously being lifting from the surface for ultimate precision. Made with porous graphite material

BOX-Series 40 mm x 40 mm

Part #BX4040

OAV Profile Box-series Rail Guides manufactured from Aircraft Quality lightweight Material, Ultra precise linear straightness and flatness vibration-free, maintenance-free motion.Ready to install, Integrated locking brake function, through pretensioning of the air bearing, for ultimate accuracy positioning. Made with porous graphite material

BOX-Series 50 mm x 50 mm

Part #BX5050

Local Straightness: .25 µ per 25 mm travel with a maximum error of 2 µ per 1000 mm travel

Flatness: .0005 mm or .00002 in

Custom Design

Air Bearing Guides

Specifications

We provide designs that are integrated into your product and we can quickly develop a design based on the application or specific requirements. We provide detailed drawings and 3-D CAD models, can analysis complex issues associated with application from nanometer accuracy positioning to standard calculations.