QR Code Locker Vending Machine Lock Geared Motor

With the popularization of unmanned retail, QR code compartment vending machines can be found widely in hotels, hospitals, office buildings and campuses. The independent compartment design with one item per grid is ideal for self-service sales of small commodities. The core component driving the automatic opening and closing of each small door is the GM12-N20 miniature geared motor. Featuring compact size and high torque, this micro motor has become the standard drive accessory for small compartment cabinet locks, perfectly matching the structural requirements of slim cabinets.

The GM12-N20 motor measures only 12×10×24mm, featuring an ultra-compact and slim profile that can be easily embedded into narrow compartment lock bodies without occupying internal storage space of cabinets. Multiple gear ratio options are available for this motor, including three standard sets of tested parameters widely used for commercial vending machine locks to precisely fit various application scenarios:

6V, gear ratio 120:1: No-load output speed 100 rpm, stall torque 0.5kg·cm. It delivers moderate rotating speed and ultra-low noise, suitable for wall-mounted mini compartment cabinets in hotels with thin cabinet doors and medium opening/closing frequency, ensuring quiet operation without disturbing guests.

12V, gear ratio 150:1: No-load output speed 90 rpm, stall torque 1.0kg·cm. It features balanced torque and stable response, applicable to scenic spot souvenir sample cabinets and apartment multi-functional snack cabinets. It can withstand hundreds of unlocking cycles daily and runs smoothly without jamming during long-term operation.

12V, gear ratio 250:1: No-load output speed 54 rpm, stall torque 1.8kg·cm. With high torque and low rotational speed, it fits hospital consumable vending machines equipped with slightly heavy cabinet doors and operating under large temperature fluctuations. Sufficient torque can overcome resistance caused by dust and minor jamming to achieve a higher unlocking success rate.

Compared with electromagnetic locks commonly used in parcel lockers, this motor drives the bolt to extend and retract via forward and reverse rotation. It does not require continuous power supply to stay locked, resulting in lower standby power consumption. It rarely overheats or burns out during 24-hour continuous operation, greatly reducing the overall equipment failure rate.Electromagnetic locks rely on spring rebound for locking, which tends to cause rebound jamming and incomplete door closure after frequent use. In contrast, the N20 motor enables controllable and smooth bolt movement with steady locking and unlocking actions. It maintains smooth performance even after 150,000 opening and closing cycles, perfectly suited for high-frequency operation of QR code compartment vending machines.

The N20 geared motor supports mainstream supply voltages of 6V and 12V, perfectly matching the power supply systems of compartment cabinets. The torque output of the three specifications above precisely corresponds to the bolt load of different cabinets. It avoids damage to plastic lock structures caused by excessive torque as well as unlocking failures resulting from insufficient torque.The metal gearbox boasts excellent wear resistance and durability. The operating noise of a single motor is controlled below 45 decibels, producing no harsh sounds during door opening and closing when installed in quiet areas such as hotel guest rooms and hospital wards, thus greatly improving user experience.The output shaft can be customized into a flat D-shaft to directly connect with bolt push rods. Manufacturers do not need extra adapter parts for assembly, which simplifies the lock structure and cuts overall production costs.

In terms of application scenarios, the three GM12-N20 models with different parameters are tailored for distinct usage environments: the 6V 120:1 version is widely applied to wall-mounted mini cabinets in hotels; the 12V 150:1 variant fits scenic spot souvenir sample lockers and apartment snack compartment vending machines; the 12V 250:1 model is highly suitable for hospital consumable vending machines. Such equipment features narrow internal compartment widths of only 80–120mm and slim cabinet bodies with extremely limited internal installation space, which can only accommodate this miniature motor.In contrast, large parcel lockers like Fengchao adopt electromagnetic locks due to their wide compartments and heavy cabinet doors. The identical N20 motor is only adopted for door locks of mini shared storage lockers and small auxiliary parcel cabinets, forming a clear differentiation between the two application scenarios.

Unmanned retail equipment demands strict stability and durability, as most units operate unattended with high after-sales maintenance costs. Boasting compact size, low noise, low power consumption and high cycle life across differentiated specifications, the GM12-N20 precisely meets the requirements of compartment vending machines for hotels, scenic spots, hospitals and apartments, making it the top choice lock motor among compartment vending machine manufacturers.It effectively cuts failure rates and enhances user shopping experience throughout complete machine design, mass assembly and long-term terminal operation. This motor serves as an indispensable core power component enabling automatic QR code unlocking for small intelligent compartment lockers.