Hacker B20-18L with Gearbox 4.0:1

The B20 series features our smallest and lightest brushless motors currently available. Thanks to improved winding techniques and the use of the latest materials, we have succeeded in opening up entirely new possibilities for you. These small powerhouses can be used very versatilely, from very light yet extremely efficient drives for micro-helicopters, through all typical "400-class" applications, up to hotliner-type drives for HLG's. Torque rolls with indoor and funflyer models are now finally possible. These motors are available in two lengths as direct drives or with a very high-quality 4:1 planetary gearbox. The flange dimensions identical to "400-class" motors for direct drives result in almost endless application possibilities. The shaft of the direct drives is hardened and ground. In conjunction with the high-quality industrial ball bearings, it provides the prerequisite for high concentricity and long service life. The 4:1 planetary gearbox has been specially selected for these motors. Numerous tests have confirmed its versatility and durability at an extremely low weight. The output shaft has a flattened side for securely attaching propeller adapters. Both clockwise and counter-clockwise rotation are possible without efficiency losses.