ASBY

Key Features of ASBY Series Aerospace Spherical Bearings

1. Radial Clearance

The ASBY Series Aerospace Spherical Bearings provide a controlled radial clearance ranging from 0.0005 to 0.0020 inches. This tight clearance ensures minimal play and reliable load transfer, making them ideal for high-precision aerospace control systems and linkages.

2. Axial Clearance

Axial movement is restricted to a maximum of 0.010 inches. This limited axial clearance enhances structural stability and reduces the risk of misalignment under dynamic loading conditions commonly encountered in flight systems.

3. Dimensional Stability Post-Plating

All dimensional specifications apply after surface plating. This ensures that the finished bearing meets exact aerospace tolerance requirements and is fully compatible with mating components in critical assemblies.

4. Concentricity Tolerance

The concentricity between the outer diameter (D) and the bore diameter (B) is maintained within 0.005 inches FIM (Full Indicator Movement). This tight concentricity specification ensures uniform load distribution and optimal rotational accuracy during operation.

5. Operating Temperature Range

These spherical bearings are rated for continuous operation in environments ranging from -65°F to 250°F (-54°C to 121°C), supporting their use in both high-altitude cold conditions and engine-adjacent zones.

6. Lubrication Standard

The bearings are pre-lubricated in compliance with MIL-PRF-21164, a military specification for solid film lubricants. This ensures high-performance friction control and wear resistance under aerospace operating conditions.

7. Lubrication Groove and Grease Access

The groove dimensions on the inner diameter of the race and the through-race grease holes are machined prior to assembly. The swaging process—used to retain the inner ring—does not obstruct grease flow, ensuring effective and continuous lubrication throughout the service life of the bearing.

Typical Applications

The ASBY Series bearings are suitable for aerospace actuators, control rods, and linkage assemblies where compact size, precise alignment, and long-term reliability are essential. Their narrow design and tight tolerances make them a preferred choice for engineers seeking both space efficiency and durability.