The oil supply pressure of the servo hydraulic machine may be too low for a variety of reasons. Here are some common factors that can cause low oil supply pressure: Insufficient pump capacity: If the hydraulic pump installed in a servo hydraulic press is improperly sized or has low displacement, it may not be able to generate enough pressure to meet the demands of the system. In this case, it may be necessary to upgrade to a higher capacity pump or adjust the pump displacement setting. Worn or damaged pumps: Over time, hydraulic pumps experience wear, which can lead to reduced performance and reduced pressure output. Worn or damaged internal parts of the pump, such as seals, pistons or valves, can cause the oil supply pressure to drop. Regular maintenance and inspections are critical to identifying and resolving any pump-related problems. Incorrect pump speed setting: The pump speed setting plays a vital role in determining the output pressure. If the pump speed is set too low, it will result in insufficient oil supply pressure. Make sure the pump speed is properly adjusted for system requirements and operating conditions. Hydraulic system leaks: Hydraulic system leaks, such as leaks in hydraulic lines, fittings, or seals, can cause a drop in oil pressure. Leaks result in a loss of hydraulic fluid, which reduces the volume of fluid available to generate pressure. Check the system for leaks and repair or replace any faulty parts to restore the required pressure. Clogged or Restricted Hydraulic Filters: Hydraulic filters are responsible for removing contaminants from hydraulic fluid, keeping it clean and flowing properly. If a filter becomes clogged or restricted over time, it can impede oil flow and cause pressure to drop. Periodically inspect and clean or replace hydraulic filters as recommended by the manufacturer. 90R130-MA-5-NN-80-S-4-C8-H-C5-GBA-29-29-24 90R130MA5NN80S4C8HC5GBA292924 90-R-130-MA-5-NN-80-S-4-C8-H-C5-GBA-23-23-24 90R130MA5NN80S4C8HC5GBA232324 90R130-MA-5-NN-80-S-4-C8-H-C5-GBA-23-23-24 90R130MA5NN80S4C8HC5GBA232324 90-R-130-MA-5-NN-80-S-4-C8-F-C4-GBA-29-29-24 90R130MA5NN80S4C8FC4GBA292924 90R130-MA-5-NN-80-S-4-C8-F-C4-GBA-29-29-24 90R130MA5NN80S4C8FC4GBA292924 90-R-130-MA-5-NN-80-S-3-F1-F-C5-GBA-42-42-24 90R130MA5NN80S3F1FC5GBA424224 90R130-MA-5-NN-80-S-3-F1-F-C5-GBA-42-42-24 90R130MA5NN80S3F1FC5GBA424224 90-R-130-MA-5-NN-80-S-3-C8-H-C5-GBA-42-42-24 90R130MA5NN80S3C8HC5GBA424224 90R130-MA-5-NN-80-S-3-C8-H-C5-GBA-42-42-24 90R130MA5NN80S3C8HC5GBA424224 90-R-130-MA-5-NN-80-S-3-C8-H-C5-GBA-35-35-30 90R130MA5NN80S3C8HC5GBA353530 Pressure relief valve failure: Pressure relief valves are designed to regulate system pressure by diverting excess oil flow back to the tank. A faulty or improperly adjusted pressure relief valve can result in low fuel supply pressure. Verify the setting and function of the relief valve and make any necessary adjustments or replacements. Insufficient hydraulic oil level: Insufficient hydraulic oil in the reservoir can cause low oil supply pressure. Check the fluid level and make sure it is within the recommended range. Also, make sure the type and viscosity grade of the hydraulic fluid is as specified by the manufacturer. Insufficient pump inlet conditions: Pumps need proper inlet conditions to function optimally. Insufficient or restricted hydraulic oil flow into the pump can result in low oil supply pressure. Check the pump inlet line for any restrictions or blockages, such as a clogged filter, kinked hose, or improperly sized inlet tubing. Make sure the pump receives an adequate and uninterrupted supply of hydraulic oil. Excessive system leakage: Excessive internal leakage in the hydraulic system will cause the oil supply pressure to drop. Check all hydraulic connections, fittings, valves and seals for potential leaks. Repair or replace any leaking parts to prevent fluid loss and restore proper pressure levels. Pressure Control Component Failure: Pressure control components in servo hydraulic systems, such as pressure relief valves, pressure regulators, or proportional valves, play a critical role in maintaining desired pressure levels. If any of these components are malfunctioning, worn, or improperly adjusted, low oil supply pressure can result. Verify the setting, function, and condition of these components, and make any necessary repairs or adjustments. Contaminants in the hydraulic system: Contaminants such as dirt, debris, or particles in the hydraulic fluid can block the flow path, causing a drop in supply pressure. Regularly inspect and clean hydraulic tanks, filters and other system components to ensure they are free of contaminants. Use proper filtration systems and maintain cleanliness standards to prevent contamination-related stress problems. System overloading: If a servo hydraulic press is operated in overload conditions beyond its design capabilities, it will strain the hydraulic pump and cause the oil supply pressure to drop. Evaluate operating conditions and ensure that the machine is not overloaded. If necessary, consider upgrading system components or adjusting load requirements to alleviate stress-related issues. Insufficient pump maintenance: Regular maintenance of hydraulic pumps is essential to ensure optimal performance. Lack of proper maintenance, such as insufficient lubrication, worn components or misalignment, can result in reduced pump efficiency and reduced oil supply pressure. Follow the manufacturer's recommended maintenance plan and procedures to keep the pump in good working order. Improper pump rotation or direction: The direction of pump rotation is critical for proper oil supply pressure. If the hydraulic pump rotates in the wrong direction, it will result in reduced pressure output. Check the direction of rotation of the pump and make sure it meets the manufacturer's specifications. If necessary, reverse the direction of rotation to correct the problem. Improper pump control settings: Servo hydraulic machines usually have a control system that allows adjustment of pump performance parameters. Incorrect settings, such as low pressure set points or limited pump strokes, can result in low oil supply pressure. Verify control settings and adjust as necessary to ensure pump is operating within desired pressure range. Pump or component seal failure: Worn or damaged seals within hydraulic pumps or other system components can lead to oil leakage and subsequent loss of pressure. Check the seals for signs of wear, leakage or damage. Replace any faulty seals to restore proper oil supply pressure and prevent further fluid loss. 90R130-MA-5-NN-80-S-3-C8-H-C5-GBA-35-35-30 90R130MA5NN80S3C8HC5GBA353530 90-R-130-MA-5-NN-80-S-3-C8-H-C5-GBA-26-26-30 90R130MA5NN80S3C8HC5GBA262630 90R130-MA-5-NN-80-S-3-C8-H-C5-GBA-26-26-30 90R130MA5NN80S3C8HC5GBA262630 90-R-130-MA-5-NN-80-S-3-C8-F-C6-GBA-35-35-24 90R130MA5NN80S3C8FC6GBA353524 90R130-MA-5-NN-80-S-3-C8-F-C6-GBA-35-35-24 90R130MA5NN80S3C8FC6GBA353524 90-R-130-MA-5-NN-80-R-3-F1-F-C5-GBA-35-35-24 90R130MA5NN80R3F1FC5GBA353524 90R130-MA-5-NN-80-R-3-F1-F-C5-GBA-35-35-24 90R130MA5NN80R3F1FC5GBA353524 90-R-130-MA-5-NN-80-R-3-F1-F-C5-GBA-26-26-24-P000 90R130MA5NN80R3F1FC5GBA262624P000 90R130-MA-5-NN-80-R-3-F1-F-C5-GBA-26-26-24-P000 90R130MA5NN80R3F1FC5GBA262624P000 90-R-130-MA-5-NN-80-R-3-C8-H-C6-GBA-17-17-20 90R130MA5NN80R3C8HC6GBA171720 Insufficient pump pre-charge pressure: Some servo hydraulic systems require pre-charge pressure to ensure optimal pump performance. If the pre-charge pressure is too low or not present, it will cause the oil supply pressure to drop. Check the precharge pressure setting and adjust it to the manufacturer's recommendation. Insufficient hydraulic system ventilation: Trapped air in the hydraulic system can compress and affect oil supply pressure. Make sure the system is properly vented to release any trapped air. Bleed the system according to the recommended procedure provided by the manufacturer. Insufficient Hydraulic Fluid Viscosity: The viscosity of the hydraulic fluid can affect pump performance and pressure output. If the fluid viscosity is too low, it will reduce the oil supply pressure. Make sure the hydraulic fluid used in the system has the proper viscosity recommended by the manufacturer. Adjusting fluid viscosity, if necessary, can help restore proper pressure levels. Electrical or control system problems: In servo hydraulic machines, electrical or control system problems can affect the operation of the pump and cause low oil supply pressure. Check electrical connections, sensors and control circuits for any faults or malfunctions. Resolve any electrical or control system problems to restore normal pump performance and pressure output. Diagnosing the specific cause of low oil supply pressure to a servo hydraulic press is critical by systematically examining various components, settings, and system parameters. If you have difficulty identifying or resolving the problem, it is recommended to consult a hydraulics specialist or contact the manufacturer's technical support for further assistance.