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Flat RECTANGULAR 
air Bearings

25 mm by 50 mm flat rectangular frictionless air bearing

OAV flat rectangular air bearings provide ultra-precise, frictionless linear motion across flat surfaces using our GraphAir™ film technology. Designed for high-stability motion systems, they deliver uniform load distribution, eliminate mechanical contact, and ensure consistent performance in demanding precision applications such as semiconductor manufacturing, metrology, and automation.

High-Precision Flat Air Bearings for Linear Motion Systems

Key Benefits

  • Frictionless operation for no wear and longevity

  • Uniform load distribution for high stability

  • Sub-micron positioning accuracy for precision motion

  • Clean, lubrication-free operation

  • Modular designs for flexible system integration

Common Applications

  • Semiconductor manufacturing equipment

  • Coordinate measuring machines (CMMs)

  • Optical inspection and metrology systems

  • Precision automation and assembly systems

  • High-speed linear motion stages

Technical Advantages

  • High load capacity with uniform air film support

  • Optimized air consumption for efficiency

  • Lightweight, rigid construction

  • Custom sizes and configurations available

Precision Linear Motion With GraphAir™ Technology

Porous GraphAir™ technology creates a uniform, pressurized air layer, enabling frictionless, non-contact planar motion with exceptional flatness, stiffness, and load distribution. Ideal for precision positioning, metrology, and high-performance motion systems requiring stable, long-travel accuracy.

FLAT RECTANGULAR AIR BEARINGS 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.

20 mm x 40 mm Frictionless Flat Air Bearing

20 mm x 40 mm Frictionless Flat Air Bearing

Part # OAVF20L40

20 mm x 40 mm Flat Rectangular porous graphite Air Bearing. High load capacity for linear applications. Manufactured with aerospace quality material.

25 mm x 50 mm Frictionless Flat Air Bearing

25 mm x 50 mm Frictionless Flat Air Bearing

Part # OAVF25L50

25 mm x 50 mm Flat Rectangular porous graphite Air Bearing. High load capacity for linear applications. Manufactured with aerospace quality material.

25 mm x 100 mm Frictionless Flat Air Bearing

25 mm x 100 mm Frictionless Flat Air Bearing

Part # OAVF25L100

25 mm x 100 mm Flat Rectangular porous graphite Air Bearing. High load capacity for linear applications. Manufactured with aerospace quality material.

40 mm x 50 mm Flat Rectangular porous graphite Air Bearing. High load capacity for linear applications. Manufactured with aerospace quality material.

40 mm x 50 mm Frictionless Flat Air Bearing

Part # OAVF40L50

40 mm x 50 mm Flat Rectangular porous graphite Air Bearing. High load capacity for linear applications. Manufactured with aerospace quality material.

40 mm x 80 mm Frictionless Flat Air Bearing

40 mm x 80 mm Frictionless Flat Air Bearing

Part # OAVF40L80

40 mm x 80 mm Flat Rectangular porous graphite Air Bearing. High load capacity for linear applications. Manufactured with aerospace quality material.

50 mm x 100 mm Frictionless Flat Air Bearing

50 mm x 100 mm Frictionless Flat Air Bearing

Part # OAVF50L100

50 mm x 100 mm Flat Rectangular porous graphite Air Bearing. High load capacity for linear applications. Manufactured with aerospace quality material.

100 mm x 200 mm Frictionless Flat Air Bearing

100 mm x 200 mm Frictionless Flat Air Bearing

Part # OAVF100L200

100 mm x 200 mm Flat Rectangular porous graphite Air Bearing. High load capacity for linear applications. Manufactured with aerospace quality material.

100 mm x 1000 mm Frictionless Flat Air Bearing

100 mm x 1000 mm Frictionless Flat Air Bearing

Part # OAVF100L1000

100 mm x 1000 mm Flat Rectangular porous graphite Air Bearing. High load capacity for linear applications. Manufactured with aerospace quality material.

60 mm x 57 mm x 1250 mm Frictionless Air Bearing Bar

60 mm x 57 mm x 1250 mm Frictionless Air Bearing Bar

Part # OAVCB6060

The OAV porous graphite Air Bearing Bar generates an evenly distributed film of gas between the surface and the substrate. Because of low gas viscosity and friction losses by viscous shearing, mechanical contact is avoided. The combination of air pressure and vacuum allows the OAV air bearing bar to hold the substrate down while simultaneously lifting it from the surface for ultimate precision and fly height (20 to 120 μm at stability of ±5 μm).

Custom Design

Flat Rectangular Air Bearings

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.

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