Shaft and bearings are precision components that enable smooth rotational motion and accurate positioning in encoder systems.
The shaft and bearings assembly in an encoder is a critical mechanical subsystem consisting of a rotating shaft supported by precision bearings. This assembly ensures minimal radial and axial play while maintaining precise alignment between the rotating encoder disc and stationary optical or magnetic sensors. The shaft transmits rotational motion from the measured object, while the bearings provide low-friction support and maintain concentricity for accurate position detection.
该组件会出现在以下整机或工业产品中。
诱因 → 失效模式 → 工程缓解
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Radial play refers to the internal clearance between bearing balls and races in the radial direction, affecting shaft wobble. Axial play is the clearance in the axial direction, affecting endplay. Both must be minimized for encoder accuracy.
Most encoder bearings are sealed and lubricated for life. In high-speed or high-temperature applications, relubrication may be needed every 10,000-50,000 hours depending on operating conditions.
Typically, shafts and bearings are replaced as an assembly since wear patterns develop together. However, precision shafts can sometimes be reused with new bearings if within tolerance specifications.
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