Product overview
The STEAM MK55023 is a brushless motor for 550-class helicopters, manufactured using CNC combined turning and milling. Internal active cooling fins reduce operating temperature and improve energy conversion efficiency. Designed for a 6S battery, the motor supports a maximum continuous current of 150A and maximum continuous power of 3300W. Peak current reaches 171A for 2 seconds, while maximum peak power is 3800W for 2 seconds. No-load current is 9.4 A at 10V.
The motor combines a 40mm-diameter, 35mm-thick stator with a 12N stator-arm and 10P magnetic-pole configuration. Its body measures 49.6mm in outside diameter and 60mm in length, with a 5mm shaft diameter, 38mm gear shaft length and 98mm total shaft length. Mounting dimensions are 25mm/30mm, motor resistance is 5.8mΩ, and weight is 415g. The supplied set contains one brushless motor, four M4×8mm socket head cap screws and three Φ5.5 gold-plated banana connectors.
