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Home > Our Business > Materials and Components > Sapphire and Ruby
Hole Jewels Bearings
Hole Jewels Bearings

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.

Item

Outside

Diameter

Height

Inner diameter

Radian of Inner hole

Cup/ Raised

curvature radius

Size

Φ0.50~Φ200

0.10~200

Φ0.05~Φ180

>2H

>0.45

Tolerance

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


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Address: NO. 61 Huangshan Road ,Chongqing New North Zone,China Tel :023-67032088 E-mail: cyinfo@cqcy.com
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