When using hydraulic lift freight elevators, high oil temperature can cause the equipment to malfunction and operate improperly. The main symptoms include reduced lifting capacity that fails to meet design specifications, and a slower response time with decreased lifting speed. These issues not only affect operational efficiency but also pose safety risks if left unaddressed. Jinan Ruihai Hydraulic Machinery Co., Ltd. is a leading domestic manufacturer specializing in the production of hydraulic lifts, lifting platforms, and aluminum alloy lifts. As a member of the China Lifting and Transportation Warehousing and Logistics Association, the company is recognized for its commitment to quality, reliability, and customer satisfaction. So, what causes the hydraulic oil temperature to rise in freight elevators? According to Jinan Ruihai, there are several key factors: 1. **Internal Cylinder Issues** Over time, the internal damping oil seal in the cylinder may wear out significantly, leading to increased internal leakage and higher oil temperatures. **Solution**: Replace the oil seal with a corrosion-resistant type to reduce leakage and improve performance. 2. **Hydraulic System Design and Maintenance** The hydraulic system includes a power unit, cylinder, and high-pressure oil pipes. If the tubing has a small inner diameter or becomes bent due to external forces, it can restrict oil flow, increase system pressure, and raise oil temperature. **Solution**: Use high-quality hydraulic hoses with proper diameter and flexibility to ensure smooth oil flow. 3. **Motor Maintenance Problems** Poor maintenance of the motor powering the elevator can lead to bearing damage, causing the rotor to rub against other components and generate excessive heat. **Solution**: Regularly maintain the motor and use high-temperature, wear-resistant universal lithium grease on the bearings to prevent overheating. 4. **Faulty Joystick Operation** Wear, rust, or inflexible rotation of the joystick can prevent it from returning to the neutral position, causing the hydraulic system to remain under load and increasing oil temperature. **Solution**: Apply wear-resistant, high-temperature lithium-based grease to the joystick’s rotating parts to ensure smooth operation and timely unloading. 5. **Damaged Oil Filters** If the oil filter mesh or oil suction pipe is damaged, it can allow solid particles and impurities to enter the system, clogging the oil circuit and raising oil temperature. **Solution**: Install a fine mesh oil filter to prevent contaminants from entering the hydraulic system. By addressing these common issues, users can significantly improve the performance and lifespan of their hydraulic freight elevators. For more information, visit Jinan Ruihai Hydraulic Machinery Co., Ltd. We welcome all customers and partners to visit us and learn more about our products and services. (http://)
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