A new high temperature sliding bearing

By employing a support ring for fixation and an inclined design in the sliding bearing body, the problem of eccentricity caused by uneven thermal expansion under high-temperature conditions is solved, thereby improving assembly efficiency, bearing reliability, and extending service life.

CN224339203UActive Publication Date: 2026-06-09DALIAN SONGLONE PUMP MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DALIAN SONGLONE PUMP MFG
Filing Date
2025-07-10
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing high-temperature sliding bearings are prone to eccentricity due to uneven thermal expansion in high-temperature environments. The assembly process damages the alloy coating, and fatigue failure occurs after multiple thermal cycles. The disassembly process may also damage the Stellite alloy layer on the bushing.

Method used

The support ring is fixed inside the support tube by welding. The sliding bearing body is interference-fitted with the support ring. The bushing is precisely installed into the sliding bearing body. The inner wall of the sliding bearing body is inclined to the working surface of the bushing, which automatically centers by gravity, reduces hydraulic loss and vibration, and prevents media residue.

Benefits of technology

It effectively reduces hydraulic losses, minimizes fluid impact and vibration, extends the service life of sliding bearings, simplifies the assembly process, and ensures the stable operation of the rotor system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224339203U_ABST
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Abstract

The utility model relates to bearing technical field especially relates to a novel high temperature sliding bearing, including support pipe, sliding bearing body and shaft sleeve, the device is fixed in the support pipe through the mode of welding through the support ring, the support ring is processed to the size of interference fit with sliding bearing body after welding, to fix sliding bearing body, install sliding bearing body in the support ring again, finally the shaft sleeve is accurately loaded into sliding bearing body, through sliding bearing body effectively reduced the hydraulic loss, is especially key to large flow high lift pump, reduces the impact of fluid to the support rib plate and the additional vibration of fluid when running simultaneously, can discharge the residual medium between the shaft sleeve and sliding bearing body when pump stops, the same inclination angle of sliding bearing body inner wall and shaft sleeve working surface, facilitate quick assembly, and because of gravity effect keeps good centering, the small eccentric moment and gravity direction are contrary when running, make rotor system automatic return, reduce the vibration, prolong the sliding bearing body life.
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