A precision cylindrical component in thermal expansion sleeves that provides structural integrity and controlled thermal expansion for shaft-hub connections.
The sleeve body is the primary structural element of a thermal expansion sleeve assembly, designed as a hollow cylindrical component with precisely machined internal and external surfaces. It functions as the intermediary between a rotating shaft and hub, utilizing controlled thermal expansion principles to create interference fits without mechanical fasteners. During installation, the sleeve body is heated to expand its inner diameter, allowing easy mounting on the shaft; upon cooling, it contracts to create a uniform, high-pressure clamping force that transmits torque while maintaining concentricity and minimizing stress concentrations.
诱因 → 失效模式 → 工程缓解
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Through controlled thermal expansion: heating expands the sleeve for installation, cooling creates radial contraction that generates uniform pressure between shaft and hub, transmitting torque via friction without stress concentrations from keyways.
Minimal maintenance beyond periodic inspection for surface damage or corrosion. Removal requires reheating to expand the sleeve, eliminating mechanical wear from repeated disassembly/assembly cycles.
Yes, when properly heated for removal and reinstalled following manufacturer specifications, sleeve bodies maintain dimensional stability and can typically be reused multiple times without performance degradation.
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