Note: This type of DC motor requires a controller to function. We have some inexpensive controllers and a servo tester designed for use with remote control model cars and aircraft that can be used to operate this motor. See controllers (CAT# SC-120, SC-130 and SC-112) and servo tester (CAT# STR-110) for more information. Spec sheet available in PDF format.
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Maximum current & torque 
This is in response to what "A customer from DENVER, CO" said. In theory, based on the specs for electrical resistance, thermal resistance, and max temp, if you go over 12.5 Amps, I suggest reducing the duty cycle to avoid overheating. If you're driving 50 amps (to get maximum low-end torque), then you should probably limit the duty cycle to around 5%. That means don't push 50 amps for more than 3 seconds in any given minute. ...
If you want more than 60 oz-in (5 ft-lbs) of torque (that you'd get from 12.5 amps), it's more efficient to gear down from a higher speed. In this case, you wouldn't need higher current, you'd actually want higher voltage (up to 18 volts) to overcome the back-EMF generated with speed.
easy speed control with this brushless motor
I used this 3 phase brushless motor with the servo tester(STR-110) and the 18A RC motor controller (SC-118) to rotate a magnet assembly at a precise speed for a school project. It worked very well. The motor can operate from 13.5 volt PS or battery. With a light load it draws about 150 ma at 200 rpm and about 560 ma at 3600 rpm. The servo tester allows you to set the speed over this range at 13.5 volts. The speed is increased slightly when the battery voltage increases so if you want a steady speed, regulating the PS is required with this setup. I will now try to run it with a more stable digital source, but already it works for my application.
Outstanding Quality and Plenty of Power
First, it should be noted that the P/N is " DIH23-30-013Z " (-0132 is a typo).
This motor is beautifully made and worth every cent. Without a doubt, you are getting it for pennies-on-the-dollar. Most brushless motors I have used are for R/C aircraft, and they are not consistent quality, not designed for high-torque "grunt work" applications, and have a short lifespan. If you need a beefy brushless motor, and don't want to spend $100's on a Maxon, this is perfect.
I'm using one of these, and one with the gearbox (CAT# DCM-473) on a robot that I built. These make great robotic actuators with 1/4" shaft and large ball bearings they're built to last.
I suggest getting a larger ESC than the 18A (CAT# SC-118) sold here. The motor pulls 50A at full power, so get a 60-80A ESC. I got these ones: http://www.hobbyking.com/hobbyking/store/__24253__Turnigy_AE_65A_Brushless_ESC.html
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