I'm searching for this:

230 VAC and 3 x 400 VAC (maybe more), 50-60 Hz
Up to 4 kW but less for the single phase version
I need 1.7-1.8 kW to the load
Good efficiency
Small, cola can size or in that region.
IP67 water proof
Ex environment (really harsh environment)
Can be water cooled since I have running water
Rotation speed 3000-6000 rpm not a problem but the end speed is 6-10 rpm via a gear box
Speed control of the motor but only a soft start than max speed for 5-10 minutes.

I haven't got a clue which type of motor I should look for but I'll guess something for 300-500 V internally and no brushes since the service interval should be long.

Ping motor experts!

 

You need to put this in the electronics area, this is for off topics.

 

I thought this was not particular electronical so could some nice moderator move this thread please?