Sapphire Bearing Wear-Resistant Gemstone Bearings for Precision Instruments
Product Description
Sapphire bearings are high-performance components made from synthetic sapphire (single-crystal Al₂O₃), renowned for their extreme hardness, excellent wear resistance, and chemical stability. Ideal for precision instruments, high-end industrial equipment, aerospace, and medical applications, sapphire bearings ensure low friction, long service life, and high dimensional accuracy.
Sapphire Bearing Key Features
-
Ultra-High Hardness
-
Mohs hardness: 9, second only to diamond
-
Superior wear resistance compared to metal bearings
-
Suitable for high-load and high-friction applications
-
Corrosion Resistance
-
Resistant to acids, bases, and most chemicals
-
Suitable for harsh and corrosive environments
-
High-Temperature Resistance
-
Low Friction Coefficient
-
High Precision
Sapphire Bearing Technical Specifications
| Property |
Specification |
| Thickness |
0.5–300 mm |
| Size Tolerance |
±0.01 mm |
| Edge Finish |
Ground and beveled |
| Surface Quality |
Standard 40-20 scratch-dig |
| Surface Flatness |
Best λ/4 @ 633 nm |
| Parallelism |
≤3 arc min (≤0.9 mrad) |
| Clear Aperture |
>80% of central diameter |
| Hardness (Knoop) |
1370 kg/mm² |
| Young's Modulus |
3.4 × 10¹¹ N/m² |
| Thermal Conductivity |
22 W/m·K |
| Thermal Expansion Coefficient |
8.4 × 10⁻⁶ K⁻¹ |
Sapphire Bearing Applications
-
Precision Instruments – High-precision measuring equipment, microscopes, and optical devices
-
Aerospace – Aircraft engines, satellite components, and spacecraft parts
-
High-End Industrial Equipment – Semiconductor manufacturing, laser cutting, high-speed machinery
-
Medical Equipment – Surgical instruments, dental tools, and medical imaging systems
-
Watchmaking – Bearings and components for high-end mechanical watches
Sapphire Bearing FAQ
Q1: What material is a sapphire bearing made of?
A: Sapphire bearings are typically made of synthetic sapphire, ruby, spinel, quartz, or diamond for high hardness, wear resistance, and low friction.
Q2: How does a sapphire bearing work?
A: It reduces friction and energy loss through its hardness and low friction coefficient, ensuring smooth, precise, and efficient operation in high-speed or precision equipment.
Product Tags:
|
|
Sapphire Bearing Wear-Resistant Gemstone Bearings for Precision Instruments Images
|
