Hydraulic cylinder mechanism of four-column servo hydraulic press
By introducing a No. 1 positioning ring, a No. 2 positioning ring, and a ball bearing structure into the hydraulic cylinder, the problem of hydraulic rod misalignment due to torsional force is solved, the service life and sealing performance of the hydraulic cylinder are improved, and the replacement process of the dust cover is simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAITIAN MASCH JIANGSU CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-24
AI Technical Summary
During the pressing process, the piston and hydraulic rod of the hydraulic cylinder are prone to misalignment due to torsional force, which can damage the end cap and piston and affect their service life.
The piston and hydraulic rod are positioned and guided by No. 1 and No. 2 positioning rings, and friction is reduced by ball bearings. At the same time, limit holes and limit grooves are set to facilitate the replacement of dust gaskets and enhance sealing.
It effectively prevents hydraulic rods from being damaged by torsional forces, extends their service life, improves maintenance efficiency by simplifying the dust cover replacement process, and enhances sealing performance.
Smart Images

Figure CN224545412U_ABST