In the middle of a busy construction season at a large - scale mineral processing plant, the Hitachi EX1900 - 6 large hydraulic excavator, which was in charge of transporting raw minerals from the storage yard to the processing line, suddenly encountered a problem. Mark, the operator who had been operating this excavator for five years, was about to load a batch of high - priority raw minerals when he found that the hydraulic motor of the excavator failed to rotate when he operated the control lever. After several attempts, the motor finally started to rotate, but the speed was extremely low. Even when he pushed the throttle to the maximum, the motor could only drive the bucket to move slowly, and it took twice as long as usual to complete a single loading operation.
Mark immediately stopped the machine and reported the fault to the plant's equipment maintenance manager, Emma. Emma was well aware of the importance of this excavator - if it couldn't work normally, the raw mineral supply to the processing line would be cut off, and the entire plant's production would be paralyzed. She quickly organized the maintenance team to conduct an emergency inspection.
The maintenance team first checked the hydraulic oil system. They found that the hydraulic oil quantity was sufficient and the oil quality was normal, so they ruled out the possibility of oil shortage or oil deterioration. Then they measured the hydraulic oil pressure and found that the pressure was far below the standard value. They suspected that the oil pump was faulty, so they disassembled the oil pump for inspection. However, after careful checking, they found that the oil pump's components were in good condition, with no obvious wear or damage. They then adjusted the overflow valve multiple times, but the hydraulic oil pressure still couldn't reach the normal level.
Next, the team turned their attention to the hydraulic motor. After disassembling the motor, they found that the internal rotor and stator were severely worn, with obvious gaps between them, which led to a large amount of hydraulic oil leakage. In addition, some small metal fragments were found in the motor's oil passage, causing partial blockage, and the motor's bearing also showed signs of jamming. The maintenance team tried to clean the oil passage, replace the bearing, and repair the worn parts, but after reassembly, the hydraulic motor's performance still didn't improve. The plant was faced with a severe production crisis due to this fault.
Solution:
Under the urgent situation, Emma decided to seek help from a professional hydraulic equipment company. She asked her team to search for companies with rich experience in solving large - scale excavator hydraulic motor problems online. After comparing multiple companies' technical capabilities, product cases, and customer reviews, they finally chose KICAN Company, which had a good reputation in the industry and many successful cases of customized hydraulic motor solutions.
Emma sent a detailed online inquiry to KICAN Company, including the fault phenomena of the Hitachi EX1900 - 6 excavator's hydraulic motor (non - rotation and low speed), the inspection and maintenance process of the plant's maintenance team, the technical parameters of the excavator, and the photos of the worn parts of the hydraulic motor. She also emphasized the urgency of the problem, hoping that KICAN Company could provide a solution as soon as possible.
KICAN Company's technical team responded quickly. They held an online video conference with Emma and the maintenance team within 30 minutes. During the conference, the technical experts of KICAN Company carefully analyzed the fault reasons based on the provided information. They pointed out that the internal wear of the hydraulic motor was too serious, and the key components had been damaged beyond repair, so replacing the hydraulic motor was the only effective solution.
Considering the special working conditions of the Hitachi EX1900 - 6 excavator (long - term continuous operation, heavy load, and more dust in the working environment), KICAN Company's technical team decided to provide a customized hydraulic motor solution. This customized motor uses high - strength, wear - resistant alloy materials for the rotor, stator, and other key parts, which can significantly improve the motor's wear resistance and service life. At the same time, it is designed in strict accordance with the installation dimensions, interface specifications, and performance parameters of the original hydraulic motor, ensuring that it can be perfectly replaced without modifying the excavator's original hydraulic system.
In terms of price, KICAN Company's customized hydraulic motor is 28% cheaper than the original brand motor, which can help the plant save a lot of equipment replacement costs. In terms of quality, KICAN Company has a strict quality control system. Every component of the motor undergoes rigorous testing, and the finished motor also needs to pass 120 hours of continuous heavy - load operation testing to ensure stable and reliable performance.
What's more, relying on its integrated production chain (covering R & D, raw material procurement, production, assembly, and testing), KICAN Company can greatly shorten the production cycle. After confirming the order, the production department started production immediately, and the customized hydraulic motor was completed and delivered to the plant in only 5 working days, which was much faster than the 18 - day delivery time of the original brand motor.
When the customized hydraulic motor from KICAN Company arrived at the plant, the maintenance team, with the remote guidance of KICAN's technical engineers, started the installation work immediately. Since the customized motor was perfectly matched with the excavator's original interface, the installation process was very smooth and was completed in just 2.5 hours.
When Mark restarted the Hitachi EX1900 - 6 excavator, he was surprised to find that the hydraulic motor rotated quickly and powerfully. The rotation speed reached the normal working level in an instant, and the bucket moved flexibly and smoothly. He carried out a series of loading and transporting operations, and the excavator responded quickly and accurately, without any lag or abnormal noise. Even when handling heavy raw minerals, the hydraulic motor still maintained stable performance, and the work efficiency was even higher than before the fault.
Emma was very satisfied with the effect of the customized hydraulic motor. She said: "KICAN Company's customized solution has solved our production crisis. The fast delivery speed minimized the loss caused by the excavator's downtime, and the high - quality motor ensures the normal operation of the plant's production line. The lower price also reduces our operating costs. We are very happy with this cooperation."
Mark also shared his usage experience: "The excavator with the new hydraulic motor is like being reborn. It's more powerful than before, and I can complete the loading task more efficiently. The operation is also more stable, which makes my work easier and more comfortable. I no longer have to worry about the motor breaking down during work."
Up to now, the Hitachi EX1900 - 6 excavator equipped with KICAN's customized hydraulic motor has been working stably in the mineral processing plant for three months, ensuring the continuous supply of raw minerals to the processing line. The plant has also established a long - term cooperation relationship with KICAN Company, and will give priority to choosing KICAN's products for future hydraulic equipment maintenance and replacement.
