What Are the Reasons Why the 200-Ton Hydraulic Press Actuator Crawls?

1. Air May Be Mixed into the 200 Tons Hydraulic Press Hydraulic System.

2. Due to Poor Lubrication, the Guide Rail Is Not Parallel to the Axis of the Hydraulic Cylinder, the Sealing Pressure of the Piston Rod Is Too Tight, the Bending Deformation of the Piston Rod and Other Reasons, the Friction Force Changes Greatly during the Working Stroke of the Hydraulic Cylinder, Causing Crawling.

3. in the Oil Intake Throttling Speed Control System, the Hydraulic Cylinder Has No Back Pressure Or the Back Pressure Is Insufficient. When the External Load Changes, the Cylinder Speed Changes.

4. the Flow Fluctuation of the Hydraulic Pump Is Large, and the Pressure Fluctuation of the System Caused by Relief Valve Vibration Is Large, Which Is Caused by the Fluctuation of the Input Pressure Oil of the Hydraulic Cylinder and the Crawling

5. the Valve Port of Throttle Valve Is Blocked, the System Leakage Is Unstable, and the Pressure Reducing Valve of Speed Regulating Valve Is Inflexible, Resulting in Unstable Flow and Crawling

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