FANLIN TECH

50mm Flat Round Air Bearing

50mm Flat Round Air Bearing — Silicon Carbide, High Stiffness, Sub-Micron Precision

Product Showcase

50mm Flat Round Air Bearing — Technical Details

50mm Flat Round Air Bearing — Application

50mm Flat Round Air Bearing — Overview

Product Overview

Fanlin 50mm Flat Round Air Bearing (AB-CI50-MC01) is a precision circular air bearing featuring silicon carbide (SiC) as the air-bearing surface material. Utilizing advanced porous media technology, it generates a uniform air film for zero-contact, zero-friction motion with 5 μm nominal air gap and 35 N/μm stiffness. Its compact 50 mm diameter design delivers 400 N load capacity in a lightweight 160 g package, making it ideal for high-precision motion platforms in semiconductor, optical inspection, and laser processing applications.

Fanlin Tech specializes in precision air bearing technology, mastering both porous carbon and ceramic material systems. The AB-CI50-MC01 represents our standard compact round air bearing platform, suitable for multi-axis precision stages requiring nanometer-level positioning accuracy. Customization available for load, stiffness, and mounting requirements.

Core Parameters

Load Capacity

400 N

Air Gap

5 μm

Stiffness

35 N/μm

Weight

160 g

Key Features

Porous Media Technology

Uniform air film distribution via porous carbon media ensures stable floating height and superior vibration damping

High Stiffness

35 N/μm stiffness provides rigid support for precision motion components with minimal deflection under load

Zero Friction & Wear

Contactless air-float operation with no mechanical wear — theoretically unlimited service life and no particle generation

Compact & Lightweight

50 mm diameter, 20 mm height, only 160 g — ideal for space-constrained multi-axis stage designs

Applications

AOI Inspection Platforms

High-speed, high-precision automated optical inspection with sub-micron positioning for PCB and semiconductor inspection

Semiconductor Equipment

Wafer handling, die bonding, and inspection stages requiring ultra-clean, particle-free environments

Precision Motion Stages

Multi-axis precision positioning systems for laser processing, EBSD scanning, and metrology equipment

Optical Scanning

Interferometry, optical inspection, and scanning platforms demanding nanometer-level motion accuracy

Specifications

Parameter	Value
Outer Diameter	50 mm
Height	20 mm
Weight	160 g
Effective Air Bearing Dia.	48.0 mm
Effective Area	1809 mm²
Load Capacity	400 N
Air Gap	5 μm
Stiffness	35 N/μm
Max Speed	50 m/s
Surface Flatness	≤ 0.5 μm
Rated Air Pressure	0.414 MPa (60 psi)
Air Consumption	1.0 ~ 2.0 NLPM
Air Inlet	M5 × 0.8
Air Bearing Surface	Silicon Carbide (SiC)
Body Material	Anodized Aluminum
Operating Temperature	-20 ~ 120 °C

FAQ

We recommend granite, hard anodized aluminum, stainless steel, tool steel, ceramic, glass, or coated steel surfaces with a roughness of ≤ 16 RMS and high flatness. The surface must be free of scratches, pits, and particles for optimal performance.

For a typical 200-800 mm travel stage, we recommend 4 bearings per axis for X-axis guidance and 4 for Y-axis guidance (8 total). This configuration achieves >3200 N total load capacity and >280 N/μm system stiffness for sub-micron motion accuracy.

The AB-CI50-MC01 uses porous carbon as the air bearing surface material, which provides inherent lubricity during air supply interruption. However, for critical applications, we recommend installing air pressure monitoring and alarm systems to prevent operation without proper air supply.

Yes. Fanlin Tech offers customization for load capacity, stiffness, mounting configurations, and material options. Please contact our engineering team with your specific requirements.

Get Detailed 50mm Round Air Bearing Specifications

Contact Fanlin Tech's engineering team for selection advice, technical specifications, and custom solutions