Cup jewels are chiefly applied to electronic meter, hot water meter, liquid measuring instrument and movement system of single-phase and three-phase KHW meter. These cup jewels contain four types: spherical bearing, conical bearings, double cups on one face bearing, and single cup on double surfaces bearing.

Specification:

1. Outside Diameter: Φ0.80 ~ Φ25 ,h7 ~ h9

2. Height: 0.30 ~ 25, Tolerance: 0.01~ 0.10

3. Curvature radius: 0.10 ~ 150, Tolerance: +/-0.01 ~ +/-2.00

4. Cup depth: 0.05 ~ 12, Tolerance: +/-0.01~+/-0.10

5. Taper: 40°~ 160°, +/-5°

Surface roughness: Rz0.05~ Rz0.8

 Material

Synthetic sapphire/ruby single crystal α-Al2O3, natural agate, crystallite glass and ceramic, etc.

There parts are manufactured according to customer’s design and specifications.

sapphire cup jewels