16mm Brushless DC Motor with Gearbox – 30mm Length, Ultra-Compact, High Torque

The M16-30-BLDC-G series is a 16mm diameter brushless DC motor integrated with a miniature planetary gearbox, featuring a motor body length of just 30mm (plus gearbox). This ultra-compact integrated gear motor solution brings the advantages of brushless technology – long life, high efficiency, and low noise – to applications where space is extremely limited. Despite its miniature size, the motor delivers useful torque outputs up to 0.5 Nm when paired with appropriate gear ratios.

Unlike tiny metal brush DC motors that wear out after a few hundred hours, the brushless design of the M16-30 eliminates mechanical commutation, removing the primary wear component. Typical operational life reaches 8,000+ hours – up to ten times longer than comparable miniature brushed motors. The absence of brushes also eliminates electrical arcing, reducing EMI and making the motor suitable for sensitive medical and electronic devices. Motor efficiency reaches 82%, critical for battery-powered wearable and portable applications.

The precision planetary gearbox is available with metal or plastic gears depending on torque and cost requirements. Available in 1, 2, or 3 stages, gear ratios range from 4:1 to 100:1, allowing designers to optimize for either output speed or output torque. Maximum output torque reaches 0.5 Nm – sufficient for direct actuation of small mechanisms such as smart locks, micro pumps, and miniature robot joints. The compact gearbox design adds only 15–30mm to the overall length.

Three integrated hall effect sensors provide commutation feedback for electronic speed controllers (ESC) and enable precise speed control and direction changes. The hall sensors allow the motor to start smoothly from zero speed without cogging, important for positioning applications. For closed-loop speed or position control, an optional magnetic encoder (up to 512 PPR) can be added to the motor rear shaft.

The small 16mm diameter and 30mm length limit passive heat dissipation, but the high efficiency (82%) minimizes heat generation. The motor is designed for intermittent or light continuous duty. Ball bearings on both motor ends ensure smooth rotation and long life. The housing can be specified with IP54 protection for applications requiring dust and splash resistance.

OEM customers can specify gear ratio, output shaft diameter (3mm, 4mm, or 5mm), output shaft length, and end configurations including flat or D-cut. Custom lead wire length and connector terminations (Molex, JST, or custom) are supported. Encoder integration and special winding voltages are available for volume orders.

Each M16-30-BLDC-G motor undergoes 100% final inspection including no-load speed, no-load current, hall sensor functionality, insulation resistance, and mechanical runout testing. Production follows ISO 9001:2015 quality management processes. RoHS compliance documentation is available. Sample motors are available for engineering evaluation.