Air cooled spindle 6 pin connectors, also been known as spindle aviation plugs, is a small device used to connect the air cooled cnc router spindle and the variable frequency drive. (VFD also known as inverter) One complete set 6 pin connectors on air cooled spindle looks like this: 

If you are looking for air cooled spindle, please click air cooled spindle DIY CNC Kit

Full set of 6 pin connectors of air cooled electronic spindle are divided into two parts, female part and male part. Female connector is connected with VFD, so it is also called spindle connector for VFD side; male connector is fixed on the spindle and connected with the electronic spindle, so it is also called connector for spindle side. When the male and female connectors are connected together, it realizes the communication between the VFD and electronic spindle.
 
To learn how to assemble the plugs, please read assembly diagram of 6 pin spindle plug

There are 6 pins on the air cooled spindle connectors, and their definition is here.

Pin 1 = U Phase /Motor Phase

Pin 2 = V Phase /Motor Phase

Pin 3 = W Phase /Motor Phase

Pin 4 = Heat Protection

Pin 5 = Heat Protection

Pin 6 (or Pin E) = Earthing
 

EagleTec also supply all kinds of spindle connectors, including air cooled spindle and water cooled spindle with different brands. Welcome your contact!  (please click icon "Inquire Now" near the top)

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