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Mazak QT 8 Fans

Chips Everywhere

Cast Iron
Apr 29, 2021
I was doing some maintenance on my machine, 1988 QT8 T2, and I am in the process of replacing several fans. The problem is I don’t have some part numbers for some of them and I think some may be incorrect ones.

The external fan that is used for cooling the spindle motor, it’s info tag says it’s 230v, but it looks identical to the other fans of this size/frame found inside the electrical cabinet on the lower part of the cooling tower (I think thats what its called) and on the top of the tower. These fans are 100v, and appear to be original equipment on my machine. Can anyone verify that the 230v is indeed the correct fan for the spindle motor and not one that was used in a pinch? I have a feeling its supposed to be a 100v one, but can't confirm.

This is the fan that I found that was used for cooling the spindle motor:


You can see its an identical frame size, but different voltage to the fans that are circled. The fans circled are the ones the are mounted on the top of the cooling tower and can be seen from the outside.


Top of the cooling tower cavity where the circled fans sit in.


The fans located on the inside of the cabinet are Toyo Fans T750 DX 100v. I assume the top fans are also 100v fans because they are on the same circuit.


The last fan I am trying to identify is the fan that sits above the hydraulic power unit in the area that is circled. As you can see from the pictures, the ID tag is missing some critical information.


As always, thanks in advance for the help.
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