TAOMSUN precision ruby & sapphire bearings are high-performance support components designed for low-friction, high-speed operation. Made of synthetic corundum (ruby/sapphire), Mohs hardness 9, surface roughness ≤ 0.01 μm, friction coefficient ≈ 0.14 against metal. Three series – through-hole (straight/arc hole, single/double oil groove), end-face (flat/ball/tapered) and groove (double-ball) – cover 12 standard configurations, with outer diameters customizable from Φ0.8 to 6.0 mm. ISO 9001 certified. Overseas sales and technical support provided by METICULAB (Korea).

The TAOMSUN custom single oil groove arc-hole ruby bearing is made from synthetic corundum ruby (Al₂O₃) with Mohs hardness 9. It offers excellent wear resistance, Ra 0.01μm surface finish, and low friction (≈0.14 against steel, dry). The single oil groove stores lubricant to reduce friction, while the arc-hole structure ensures stable, precise positioning. Applications include analytical balances, spectrophotometers, servo motors, CNC spindles, and medical devices. Custom dimensions, tolerances, and geometry are available per drawing. Prototype orders welcome.

TAOMSUN High-Hardness Conical Jewel Bearings are key support components for instruments and precision equipment. Made of synthetic corundum (ruby/sapphire) with Mohs hardness 9, surface roughness ≤0.01 μm and friction coefficient ≈0.14. The conical design distributes the load evenly for precise positioning, ideal for precision instruments, industrial automation, aerospace and medical devices that demand high precision and reliability. Outer diameter Φ0.8–6.0 mm customizable. ISO 9001 certified. Overseas sales and technical support by METICULAB (Korea).

TAOMSUN flat straight-hole ruby bearings are universal precision support components for instruments, meters and precision equipment. Manufactured from synthetic corundum (ruby/sapphire), Mohs hardness 9, surface roughness ≤0.01μm, friction coefficient ≈0.14. The flat straight-hole design is simple and reliable, fitting a wide range of standard precision applications including precision instruments, automation equipment and measuring devices. Outside diameter Φ0.8-6.0 mm, custom sizes available. ISO 9001 certified. Overseas sales and technical support provided by METICULAB (Korea).

TAOMSUN Spherical Cup Jewel Bearing (Cup Jewels) is manufactured from synthetic ruby – Mohs hardness 9, surface roughness ≤0.01 μm, friction coefficient ≈0.14. The spherical outer diameter provides self-alignment; the curved-arc inner hole distributes stress; this dual structure ensures stable precision rotation and a long service life. Ideal for rotation support in electricity meters, water meters, tachometers, aircraft instruments, gyroscopes, clocks, flow meters and other precision instruments. Outer diameter customizable within Φ0.8–25 mm, tolerance h7~h9. ISO 9001 certified. Overseas sales and technical support provided by METICULAB (Korea).

TAOMSUN precision through-hole jewel bearings are manufactured from synthetic ruby and sapphire single crystals. Outer diameter from Ø0.80 mm to Ø8.00 mm (precision h7–h9); bore from Ø0.08 mm to Ø5.00 mm with tolerance down to 0.004 mm. Bearing surface roughness R0.1 / R0.2, mounting surface R2.3. Available in plain, arc, single/double oil-groove and convex types. Suitable for timing instruments, automatic recorders, dial indicators, dial gauges, micrometers and precision measuring instruments. Made in China; overseas sales and technical support by METICULAB (Korea). OEM/ODM and drawing-based customization supported under ISO 9001.