As a member of Premotec classic CL40 coreless DC motor lineup, the 9904 120 16803 is a 24V brushed miniature drive unit delivering 3W rated output power, built with a coreless rotor structure, high-performance permanent magnets and precious metal commutation to eliminate iron loss and cogging torque completely. It adopts sliding bearing design, measures Φ40mm × 39mm in dimension with a 3mm-diameter output shaft, weighs only 0.2kg, runs at a rated speed of 2690rpm and provides 10mNm nominal torque; its low-inertia rotor enables ultra-fast dynamic response and smooth steady rotation with minimal torque fluctuation, and the motor comes with lead wires and rear thrust structure for convenient installation, acting as a fully compatible substitute for the obsolete part number 9904 120 16206.
This compact coreless DC motor supports flexible custom upgrades including matched planetary/spur gearheads, encoders and customized wiring terminals, and it is widely deployed in precision automation actuators, medical diagnostic devices, laboratory analytical instruments, optical adjustment platforms and miniature industrial testing equipment. Manufactured under Allied Motion Premotec’s strict precision standards, it features stable winding resistance of 25.1Ω and inductance of 3.41mH, reliable continuous operation performance and a wide applicable temperature range, meeting the high requirements of low noise, high efficiency and precise speed regulation for small-scale precision motion control systems.