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Material: Synthetic Ruby (Corundum / Al₂O₃) | Mohs Hardness: 9 | Origin: China | Korea Sales / Technical Support: METICULAB (Korea) | Customization: Dimensions, tolerances & oil groove per drawing | Prototype Welcome

The TAOMSUN custom single oil groove arc-hole ruby bearing is a precision support component made from synthetic corundum ruby (Al₂O₃), engineered for instrument and automation applications that require long-term accuracy and wear resistance. With a Mohs hardness of 9 — second only to diamond — the bearing offers excellent abrasion resistance and impact strength. Its high elastic modulus, surface roughness down to 0.01μm, and low friction coefficient (approximately 0.14 against metal) make it an ideal choice for precision support in high-frequency, low-displacement operation.
Customization scope: We manufacture ruby bearings to your drawings — including inner/outer diameter, thickness, tolerance grade, oil groove dimensions, arc-hole geometry, and surface finish. Prototype orders are welcome. Send us your drawing or specification, and our engineering team will confirm feasibility and lead time.
🔍 Structure: The single oil groove stores lubricant to reduce friction loss and extend service life. The arc-hole structure improves overall stability, maintaining precise positioning during high-frequency, low-displacement operation. High temperature resistance, high mechanical strength, and excellent environmental durability ensure reliable performance under demanding conditions.

Bearing overview

Arc-hole structure

Oil groove design

Dimension drawing
| Product Name | Custom Single Oil Groove Arc-Hole Ruby Bearing |
| Brand | TAOMSUN (Overseas partner: METICULAB) |
| Origin | China |
| Korea Sales / Technical Support | METICULAB (Korea) |
| Material | Synthetic ruby (corundum, Al₂O₃) |
| Mohs Hardness | 9 (second only to diamond) |
| Surface Roughness | Down to 0.01μm |
| Friction Coefficient | Approx. 0.14 (against metal) |
| Elastic Modulus | High (synthetic corundum) |
| Structure | Single oil groove + arc hole |
| Temperature Resistance | High temperature resistant (synthetic corundum) |
| Dimensions (ID / OD / Thickness) | Customized per drawing |
| Tolerance | Customized per drawing |
| Oil Groove Spec | Customized per drawing |
| Arc Hole Spec | Customized per drawing |
| Surface Finish | Customized (down to 0.01μm) |
| MOQ | Negotiable, prototype welcome |
| Lead Time | 15-30 days after drawing confirmation |
| Customization | OEM/ODM per customer drawing or specification |
| Quality System | ISO 9001 certified manufacturing |
Q: Can you manufacture ruby bearings to our drawing?
A: Yes. We manufacture to customer drawings, including dimensions, tolerances, oil groove, and arc-hole geometry. Send us your drawing or specification for evaluation.
Q: What material is the bearing made of?
A: Synthetic ruby (corundum, Al₂O₃) with Mohs hardness 9.
Q: What is the minimum order quantity?
A: MOQ is negotiable. Prototype and small-batch orders are welcome.
Q: What is the lead time?
A: Typically 15-30 days after drawing confirmation, depending on quantity and specifications.
Q: What is the function of the single oil groove?
A: It stores lubricant to reduce friction loss during operation and extends bearing service life.
Q: What is the arc-hole structure for?
A: The arc-hole design improves structural stability and maintains precise positioning during high-frequency, low-displacement operation.
Q: Can you provide samples before mass production?
A: Yes. Prototype and sample orders are available for evaluation before mass production.
TAOMSUN is a laboratory analytical instrument supplier integrating R&D, production, and sales. Our production processes are certified under the ISO 9001 quality management system, with product lines covering spectrophotometers, spectral analysis instruments, precision components, and supporting consumables. Core components are manufactured and assembled with precision processes to ensure accuracy and reliability. Products are widely used in chemical, pharmaceutical, environmental, food, and university research fields.
🌏 Overseas sales and technical support is provided by METICULAB™ (Korea).TAOMSUN Laboratory Analytical Instruments | 📧 Sales Inquiry taomsun@vip.163.com +86-13862625813 | 🌏 Overseas Sales / Technical Support METICULAB™ (Korea) choikyuc@gmail.com +82-10-3988-4813 💬 WhatsApp / KakaoTalk |
All TAOMSUN products are manufactured under ISO 9001. Custom specifications are manufactured per customer drawing; standard specifications as listed. For OEM/ODM customization, contact our sales team. Overseas customers may reach METICULAB (Korea) for Korean/English technical consultation.
We will reply to you as soon as possible. Feel free to leave us a message; we will contact you within 24 hours to provide the latest solution to your problem. Thank you!
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