best quality synthetic ruby jewel bearing for watches

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US $0.01-1 / Piece | 100 Piece/Pieces (Min. Order)
Supply Ability:
30000 Piece/Pieces per Week
Shanghai Port
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Quick Details
Other Type
Brand Name:
Bore Size:
0.1 - 10 mm
Outside Diameter:
1 - 15 mm
Model Number:
Jewel Bearing
Precision Rating:
P0 P4 P5 P6
Seals Type:
Open Zz
Place of Origin:
Shanghai, China (Mainland)
Artificial corundum ,manmade diamond
Red, white
Machinery & watches
pp bag
Packaging & Delivery
Packaging Details
Miniature ruby jewel bearing precision bearing: vacuum plasice bag
Delivery Time
3 to 25 days , or as per to your Qty
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Product Description

Sapphire Washers Wafer Bearings windows Rods Tubes Ruby jewel bearing for watch

Sapphire Washers Wafer Bearings windows Rods Tubes Ruby jewel bearing for watch

In 1704, Nicolas Fior di Duillier, Peter Debaufre and Jacob Debaufre pioneered the gemstone bearing, they bored a hole in gemstone, and then placed gear shaft into the hole. That reduced the friction between the movement of the gear and the splint to a certain extent, . At that time the use of precious stones is not limited to rubies, but diamonds. Sapphire. Garnet ... ... ... ... The reason is why choose precious stones, just for mechanical properties.

After the 1930s, artificial rubies bearing applicated in large-scale. It is because artificial rubies property of hard, Chemically stable, Friction coefficient, Small thermal expansion coefficient, low price, easy to manufacture and cost-effective. It is the most appropriated soluting to reduce friction movement.

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