Elastic pin and elastic diaphragm couplings
Thread Content
Gentlemasters! When to use a flexible pin coupling? When is an elastic diaphragm coupling used?
Process flow pumps generally use elastic diaphragm couplings, while fire pumps (driven by diesel engines) employ elastic pin couplings
When to use it? ? ? ? It is related to the product positioning of the supplier manufacturers and to the purchasing budget of the buyer.
There are no issues with torque calculation; any type of connection will work. Generally, large pumps use pin couplings, while smaller single-stage pumps employ claw couplings； For ease of maintenance, many manufacturers choose extended diaphragm couplings when selecting couplings
It can be seen that for systems with a power output of over 30 KW, disconnected couplings are mostly used, while for those with a power output of less than 30 KW, claw couplings are commonly employed; diaphragm couplings, on the other hand, are used in both high-power and low-power applications
In my opinion, using pin couplings at high power levels serves as a form of protection for the equipment, as it can safeguard the motor in the event of problems.
Okay, thank you all very much; I’ve learned something! ! !
I’ve learned it, but I’m still confused
It seems that indeed, most of them use elastic diaphragms these days.
Most of what is used in chemical plants are diaphragms, right? . .