Cup Orifice

A sapphire cup jewel is a type of jewel bearing used in precision mechanical devices, such as watches, clocks, and measuring instruments. It consists of a small cup-shaped piece of synthetic sapphire that is mounted in a metal setting or holder.

The sapphire cup jewel is typically used to provide a low-friction bearing surface for a rotating component, such as a balance wheel in a watch or a pivoting arm in a measuring instrument. The cup shape of the jewel helps to contain lubricating oil and prevent it from escaping, which improves the efficiency and accuracy of the bearing.

The use of sapphire in the cup jewel provides several benefits, including:
High hardness and wear resistance: Sapphire is one of the hardest materials known to man, making it highly resistant to wear and abrasion. This allows the sapphire cup jewel to maintain its shape and performance over long periods of use, resulting in more accurate and consistent movement of the rotating component.

High temperature resistance: Sapphire can withstand high temperatures, making it ideal for use in precision instruments that operate in extreme environments.

Chemical resistance: Sapphire is highly resistant to chemical attack, making it an ideal material for use in harsh or corrosive environments.

Overall, the sapphire cup jewel is a critical component in many precision mechanical devices, providing a low-friction and accurate bearing surface that helps to improve the efficiency and performance of the device.

Applications: