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Hole Jewels > Hole Jewels

Introduction

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 precision instruments (micrometer dial indicator) and other apparatus. Main type includes Plane Straight/olive holed bearing single-cup plane straight/olive holed bearing double-cup plane straight/olive holed bearing bombe olive holed bearing and single-cup bombe olive holed bearing etc.
 
 

Standard Specifications

  
 

Items

Specifications

Material

Sapphire and Ruby

Diameter

Dia. 0.80mm– Dia. 30.0mm

Dimension Tolerance

± 0.04 – ± 0.05mm

Height

0.1 – 25 mm

Inner Diameter

± 0.05 – ± 20mm

Diameter Tolerance

± 0.004 – ± 0.06mm

Radius of inner hole

>2H

Curvature Radius

>0.45

Radius Tolerance

±0.03

Notes

We could design the products for Customers

  
   
 

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