The high temperature will cause the aging of the seals in the hydraulic components. And the hydraulic oil will age so quickly that it will shorten the service cycle. Controlling the oil temperature is not only to add a cooling system, but also the design and control of the whole hydraulic system. As for this aspect, Ningbo Tianyu Machinery Equipment Co., Ltd. has done a good job. Although the equipment without a cooling system runs continuously for 8 hours, the oil temperature is only 35 ℃.