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| Categories | Sapphire Parts |
|---|---|
| Brand Name: | ZMSH |
| Model Number: | Sapphire Bearings |
| Certification: | rohs |
| Place of Origin: | CHINA |
| MOQ: | 25 |
| Price: | by case |
| Payment Terms: | T/T |
| Delivery Time: | 2-4 weeks |
| Packaging Details: | package in 100-grade cleaning room |
| Material Composition: | Synthetic Sapphire (α-Al₂O₃), purity ≥99.99% |
| Size/Shape: | Customized |
| Mohs Hardness: | Level 9 |
| Friction Coefficient: | 0.08–0.12 |
| Temperature Range: | -200°C ~ +1800°C |
| Surface Roughness: | Ra ≤0.005μm (mirror-grade polish) |
| Company Info. |
| SHANGHAI FAMOUS TRADE CO.,LTD |
| Verified Supplier |
| View Contact Details |
| Product List |
Custom Through-Hole Sapphire Bearings Precision Sliding Bearing Based on Drawings
A sapphire bearing is a precision sliding bearing that uses synthetic sapphire (single-crystal aluminum oxide, α-Al₂O₃) as its core material, formed through high-temperature melt growth and precision machining. With a Mohs hardness of 9 (second only to diamond), it exhibits an extremely low friction coefficient, excellent wear resistance, and strong corrosion resistance. Recognized as an ideal bearing material for instruments, control devices, and high-precision mechanical systems, it maintains long-term stable operation under harsh conditions such as high temperatures and strong corrosive environments.
| Parameter Category | Specific Value/Characteristic |
| Material Composition | Synthetic Sapphire (α-Al₂O₃), purity ≥99.99% |
| Mohs Hardness | Level 9 |
| Friction Coefficient | 0.08–0.12 (against steel) |
| Temperature Range | -200°C ~ +1800°C |
| Surface Roughness | Ra ≤0.005μm (mirror-grade polish) |
| Corrosion Resistance | Resistant to acids/alkalis (except HF), oxidation |
| Thermal Conductivity | 25.12 W/m·K (@100°C) |
| Dielectric Constant | 11.5 (∥c-axis), 9.3 (⊥c-axis) |
2. Customized Ruby Bearings Mohs Hardness 9 for Precision Instrumentation
1. Q: How does a jewel bearing work?
A: A jewel bearing operates by allowing a metal spindle to rotate within a pivot hole lined with a hard gemstone material (like synthetic sapphire or ruby), which minimizes friction through its ultra-smooth, hard surface.
2. Q: What are the types of bearings?
A:Bearings are primarily categorized into two main types: rolling element bearings (such as ball bearings and roller bearings) and plain/sliding bearings (like jewel bearings or fluid bearings), each designed to support different load directions and motion requirements.
Tags: # Custom Through-Hole Sapphire Bearings, #Sapphire Bearings, #Double-Side Polished, #High-Purity, #Optical Component,
#Corrosion-Resistant, #High-Temperature Rated, #Mohs Hardness 9, #Precision Instrumentation, #Aluminum Oxide,
Al₂O₃, #Sapphire, #Precision Sliding Bearing, #Bearing Based on
Drawings
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