Shanghai ABB Bearing Inner Sleeve Disassembly Case

Shanghai ABB Engineering Co., Ltd. is one of the Fortune Global 500 companies and a leading enterprise in the fields of power and automation technology. ABB is committed to assisting in fields such as power, industry, transportation, and infrastructure. In September 2021, technicians from the technical department of the company contacted us through the internet, stating that they often encounter the need for bearing disassembly during daily equipment maintenance. They use the original oxygen welding and cutting method for disassembly, which is particularly slow in efficiency and difficult to operate. Even a slight mistake can damage the shaft. At the same time, this method requires operators to have a construction certificate, which is quite troublesome and costly for the company. They hope that we can have a good solution. Through communication, we learned about their specific needs: 1. Workpiece: Bearing inner sleeve 2. Purpose: Disassembly 3. Specification: Minimum inner diameter of 144, outer diameter of 160, width of 130, weight of about 4GK, maximum shaft sleeve inner diameter of 560, outer diameter of 600, width of 315, weight of 106KG. When installing the workpiece, the heating temperature is 180 ℃.
According to the needs of the demand side, the WTR-MF40 medium frequency induction heater is recommended by the WTR technical engineer. The disassembly can be achieved by heating the temperature to around 250 ℃. The cable is wrapped around the shaft sleeve and the shaft sleeve is subjected to induction heating to achieve disassembly.

After communicating with the technicians and presenting our company's past cases and videos to the client, they highly appreciated our solution and ultimately reached a cooperation agreement. After the equipment arrived at the customer's site, it was tested and found to have a minimum inner diameter of 144, an outer diameter of 160, a width of 130, and a weight of 4KG. It only took about 2 minutes to operate, and the operation was very simple. Everyone could operate it, completely solving their long-standing problem. Through practical experience, our customers have fully recognized our equipment and technology, expressed their intention to establish long-term cooperation in the future, and will also introduce it to their customers.