In the aerospace industry, high-precision aerospace bearings are essential components that ensure the reliability, safety, and performance of aircraft and spacecraft. From jet engine bearings and gyroscope bearings to satellite attitude control bearings, these critical parts must operate flawlessly in extreme conditions such as high temperatures, vacuum, and intense vibration.
Why Are Bearings in Aerospace Subject toExtreme Demands?
Aerospace bearings face unique challenges compared to general industrial applications. These include:
Key Requirements | Description |
Extreme Temperature Resistance | Function reliably between -70°C and +300°C or higher |
High Speeds & Vibration Stability | Critical for turbines, gyroscopes, and aerospace motors requiring speed stability and anti-resonance |
Vacuum-Compatible Lubrication | Conventional lubricants evaporate in space; solid lubrication or dry film coatings are essential |
Lightweight Design Materials | Use of titanium alloys, ceramics, and lightweight stainless steels to reduce overall weight |
Zero-Failure Lifespan | Designed for 10,000+ flight hours without failure |
Corrosion & Radiation Resistance | Durable against atomic oxygen, cosmic radiation, and harsh space environments |
Common Types of Aerospace Bearings
Angular Contact Ball Bearings ：Ideal for aerospace motors and high-speed spindles, supporting combined radial and axial loads with high rigidity.
Thin Section Bearings ：Lightweight and compact, perfect for EO pods, satellite attitude control, and space-constrained assemblies.
Crossed Roller Bearings ：Handle complex radial, axial, and moment loads; widely used in inertial navigation and gyroscope platforms.
Solid-Lubricated Ceramic Bearings ： Engineered for vacuum, high temperature, and lubrication-free environments; commonly found in satellite actuators and space robotics.
Key Technical Criteria for Aerospace Bearings
Precision: Minimum ABEC 7 / ISO P4, with options up to ABEC 9 / ISO P2 for ultra-high precision
Materials: Aerospace-grade stainless steel (M50), silicon nitride (Si₃N₄) ceramics, titanium alloys
Lubrication: Dry film coatings such as MoS₂, solid lubricants, or specialized aerospace greases suitable for vacuum and extreme condition
Dynamic Balance: All aerospace bearings undergo rotor balance testing to minimize vibration and enhance stability
Preload Systems: Customized preload via pairing, shims, or springs to optimize bearing rigidity
Durability: Designed to resist pitting, fretting corrosion, wear, and fatigue under harsh aerospace conditions
Why Choose CHG for Aerospace Bearings?
CHG is a leading supplier of custom aerospace bearings, offering:
Precision bearings meeting ISO P2 / ABEC 9 standards
Advanced materials including ceramic and hybrid bearing designs
Complete dry and solid lubrication solutions for vacuum and high-temperature applications
Lightweight, low-noise bearing configurations tailored to aerospace specifications
Comprehensive testing for dynamic balance, thermal resistance, fatigue life, and load limits
We provide fully tailored aerospace bearing solutions, including non-standard sizes, special lubrications, and advanced materials engineered to meet your project’s unique demands.
Contact CHG today at info@chg-bearing.com to discuss your aerospace bearing requirements and receive expert technical support.
