jewel bearing
- Product Description
Hole Jewel contains a series of components that are chiefly applied as supporting bearings to the rotational systems of various accurate chronographs, auto-memorizing apparatus, precise instruments (micrometer, dial indicator) and other apparatus. Main types: Plane straight/olive holed bearing, single-cup plane straight/olive holed bearing, double-cups plane straight/olive holed bearing, raised olive holed bearing, and single-cup raised olive holed bearing, etc
Main Types
Specification and Technical Index
Subjects
Outside Diameter
Height
Inner diameter
Radian of Inner hole
Cup/ Raised curvature radius
Size
Φ0.80 ~ Φ30.00
0.10 ~ 115.00
Φ0.05 ~ Φ20.00
>2H
>0.45
Max deviation
0.004 ~ 0.05
+/-0.01
0.004 ~ 0.06
>+/-0.03
Surface roughness: the surface for application: Rz0.05~ Rz0.2 Assemble and sink surfaces: Rz3.2
Material
Synthetic sapphire/ruby single crystal α-Al2O3, natural agate, spinel , ceramic, etc.
Order
Please feel free to contact us if you have any requirements of other ultrahard materials or specification.
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