The Grainger 170FR8 is a 1/2 HP, 115V, single phase, open drip proof motor with a 48 frame size. It has a 1075 RPM operating speed and features a cast iron frame construction with ball bearings. This motor is thermally protected and suitable for continuous duty applications. The 170FR8 has a 1/2" diameter shaft with a 1-1/4" long shaft extension and comes with standard mounting feet. This general purpose motor can be used for a variety of industrial, commercial, and residential applications.