12mm Metal Gearbox 12V DC Gear Motor 300 Rpm High Torque Low Noise For Robotics Smart Lock

This 12mm micro metal gearbox DC gear motor is engineered for compact mechanisms that demand dependable torque, smooth motion, and long service life. Combining a high-efficiency brushed DC motor with a precision metal spur gearbox, the GA12-N20 platform converts low-voltage DC input into controlled rotational output at a 300 rpm typical speed. Its slim 12mm gearbox and 12mm motor body fit tightly into handheld, portable, and space-constrained products, while hardened steel gears resist wear under continuous duty. Whether you are designing a smart lock actuator, a robotic joint, or a quiet home-appliance drive, this motor offers predictable performance, low current draw, and straightforward integration.

• Compact 12mm Format: A 12mm gearbox paired with a 12mm motor body keeps the overall footprint minimal for dense assemblies.
• High Torque Output: Metal spur gearing delivers up to 2.0kgf.cm of rated torque for lifting, clamping, and positioning tasks.
• Low Noise Operation: Precision-meshed gears and a balanced rotor construction hold running noise to 55DB or below.
• Wide Voltage Range: Operates from 3V to 12V DC, allowing flexible battery or regulated-supply designs.
• Customizable Speed: Output speeds from 10rpm to 3000rpm are available to match specific motion profiles.
• Durable Metal Gears: Steel and copper gear materials resist abrasion and extend working life to 500–1000 hours.
• Flexible Shaft Options: Flat, D-cut, round, M3, and M4 shafts can be supplied with customized length and thread.
• Reversible Rotation: Simple polarity reversal provides clockwise and counter-clockwise motion without extra hardware.

Because of its balance between size and torque, this geared motor suits a broad range of automation and consumer products. Typical uses include electronic door locks and smart cabinet locks, robotics joints and educational robot kits, robot vacuum drives, 3D printer feeders, automatic vending mechanisms, camera pan-tilt units, electric toys, beauty instruments, and 5G communication equipment. The motor also fits healthcare devices, security monitoring hardware, intelligent transportation modules, and smart-city fixtures where silent, repeatable motion is required. Engineers value the unit for its consistent speed regulation, low standby consumption, and the ability to run from small battery packs in portable products.

Every unit is assembled in a facility certified to IATF16949, CE, RoHS, and ISO standards, and each batch undergoes 100% inspection before shipment. Production checks cover no-load current, load speed, stall torque, noise, and visual finish to confirm that delivered parts match the approved sample. Our engineering team supports customization of voltage, speed, torque, shaft geometry, gear material, cable length, and connector type, and can supply drawings and samples for design validation. With a monthly capacity of 100,000 pieces, we are able to serve both prototype builds and volume production runs while keeping specifications stable across orders.

Standard packaging uses strong cartons with protective dividers, at 1000 pieces per box, and customized packaging is available on request. Typical carton dimensions are 37 x 27 x 24cm with a gross weight near 10kg. Shipments depart from Shenzhen, Guangzhou, and Shanghai, with delivery usually within 3 to 5 work weeks depending on quantity. We provide free sample testing and technical documentation, and our sales team assists with selection whenever certain parameters are not yet fixed. A responsive after-sales process addresses any quality questions quickly, helping buyers integrate the motor with confidence and reduce time to market.