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What is the extension section of the coupling? Can you please give me some advice?
The middle section is the connection part between the two shaft heads. The purpose is to extract the rotor components without moving the motor and pump body when repairing the pump.
The middle section makes it easy to pull the pump out of the back cover without dismantling the motor during maintenance. Reduce the work pressure of workers in maintenance work. Most large enterprises will require this. Small chemical plants want you to save the most money and occupy the smallest area. The maintenance pressure is nothing, just do it.
The design institute reminds you, as shown below. The function is to remove the extension section during maintenance, and then there is no need to disassemble the motor.
For the convenience of maintenance of the rotor part.
Most of them are called middle sections, and some are called middle sections or extended sections.
This side in Dalian is called the coupling intermediate section.
All the pumps I have seen have a coupling intermediate section. Otherwise, every time you repair the pump, you have to move the motor and find the alignment, which will increase the workload a lot.