A miniature gear motor is a power transmission mechanism that uses a gear reducer to reduce the motor's rotation speed to the required speed while obtaining a larger torque. Gear reducers have a wide range of applications in mechanisms for transmitting power and motion. They can be found in almost all mechanical transmission systems, from heavy machinery and tools used in ships, automobiles, locomotives, and construction; processing machinery and tools used in the mechanical industry; automated production equipment; to common household appliances and clocks. Their applications range from high-power transmission to low-load, precise-angle transmission. In industrial applications, gear reducers have the function of both reducing speed and increasing torque. Therefore, they are widely used in speed and torque conversion equipment.
To ensure the assembly accuracy of the miniature gear motor, it is not necessary to start the motor during installation to avoid damaging the sealant. Inspection can be performed by opening the oil cap or cleaning the anti-rust grease on the gear surface with kerosene (diesel). The miniature gear motor can also be connected to the gear shaft or other non-rigid couplings using a flexible coupling between the gear shaft and the motor or main unit. The installation of the miniature geared motor should be stable and secure, and the base adjusting shims must be firmly in place (steel shims should be used). The coaxiality deviation between the motor and the coupling should not exceed the allowable value of the coupling used. Check whether the bolts on each sealing surface of the container are loose. If loose, tighten them.
Before the official use of the miniature geared motor, a load test must be performed. Before the load test, add lubricating oil according to the oil level indicator, and manually rotate the output shaft to make it rotate. It must be flexible, and then run for two hours without any abnormal noise. During the load test, the load should be gradually increased to full load (if possible, it should be in four stages: 25%, 50%, 75%, and full load), and the running time of each stage should not be less than 2 hours. The operation should be smooth without impact, vibration, or oil leakage. After draining the lubricating oil from the machine and confirming that there are no faults, or after filtering the oil with a 200-mesh filter element, it can be used. If any abnormalities occur during the test run, the cause should be identified and eliminated, and the manufacturer should be notified immediately. The miniature geared motor should be inspected every six months. After that, the tooth surface should be checked regularly (weekly) for defects such as pitting, wear, and adhesion. If the defect area along the tooth length and tooth height directions exceeds 20%, the gear pair should be replaced. Gears use both oil bath lubrication and circulating lubrication; the lubricating oil should be selected according to the equipment manual. Motors with soft and medium-hard tooth surfaces use N100~150, while hard-tooth surface geared motors use N220~320. The lubricating oil should be checked and changed regularly. Newly installed speed-regulating motors must have their oil changed after 10-15 days of operation. Afterward, the oil quality should be checked regularly (every 2-3 months). If it is found to be substandard, it should be replaced immediately. Generally, the oil should be changed at least every six months. When testing the lubricating oil quality, it must be replaced immediately if any of the following conditions are present:
Daily maintenance of micro geared motors mainly involves checking for oil leaks, checking the fluid level in the gearbox, ensuring proper lubrication, verifying the tightness of screws, regularly checking the equipment temperature, and measuring tooth wear by inserting a guide wire into the meshing position of the gears.