June 30, 2023

Efficient Operation: Use and Maintenance of Geared Motors

Gear reducer is a kind of precision mechanical equipment, which is widely used in industrial production. It converts the input rotary motion into a slower rotary motion through parameters such as reduction ratio and output torque, so as to meet the speed and torque requirements of the production process. However, in order to maintain the durable and efficient operation of the gear reducer, correct use and maintenance are crucial.

1. Precautions before installation:
1. The installation shaft should be cleaned before the machine is used. And check whether the installation shaft of the gear reducer motor has any bruises and dirt, and if there is any, it should be cleaned up.
2. The operating temperature of the reducer is 0-40°C.
3. Check whether the matching size of the hole (or shaft) connected with the reducer meets the requirements, and the tolerance of the hole should be H7 (the tolerance of the shaft is H6).
4. Before use, the blockage at the highest position should be replaced with an exhaust screw plug to ensure that the gas in the body is discharged when the reducer is running.

2. Installation of reducer
1. The gear unit may only be mounted on a flat, shock-absorbing, torsion-resistant support structure.
2. Under no circumstances is it allowed to hammer pulleys, couplings, pinions or sprockets, etc. into the output shaft with a hammer, as this will damage the bearings and shaft.

3. Use and maintenance
1. After the reducer is installed, check whether it is flexible. For formal use, no-load test must be carried out, and in the case of normal operation, it is gradually loaded and operated.
2. It is strictly forbidden to use the reducer in excess of the rated load.
3. The reducer should check whether the oil level is normal before use and during work. The machine has been filled with lubricating oil before leaving the factory. The name of the lubricating oil: medium-duty industrial gear oil GB5903-86220.

4. Oil change system:
For the first oil change, the lubricating oil should be replaced after the machine has been running for 300-400 hours, and the lubricating oil should be replaced every 1500-2000 hours thereafter. In the working environment with harsh working environment, high temperature and large dust, the lubricating oil should be checked every half a month. If there is dirt in the lubricating oil, replace the lubricating oil to keep the lubricating oil clean and prolong the service life of the reducer. ,Improve economic efficiency.

5. Oil replacement
When changing the oil, wait for the reducer to cool down until there is no danger of burning, but it should still be kept warm, because after complete cooling, the viscosity of the oil will increase and it will be difficult to drain the oil. (Note: Cut off the power supply of the transmission device to prevent unintentional power-on!)

What problems should be paid attention to when the gear reducer is overhauled?

To repair the reducer, you should first understand the structure and mechanical properties of the reducer. The most common thing about the geared motor is the increase of the gap between the parts, so the following problems should be paid attention to during maintenance:

①The gap between the tooth top of the gear and the pump casing is generally not more than 25mm, and the gear can be replaced if it is enlarged;

②The gap between the gear end and the housing cover should generally be within the range of 0.08 – 0.1mm. If the size of the gap needs to be changed, the thickness of the gasket on the end cover can be adjusted;

③The gap between the gear shaft and the bushing should generally be within 0.03-0.05mm. If the bushing is excessively worn, the center distance between the two gears will increase, which will inevitably lead to an increase in the inclination m between the meshing teeth and the radial gap . Therefore, the wear of the shaft sleeve exceeds the range and must be replaced;

④The inclination clearance of gear meshing teeth is generally not allowed to exceed 0.20mm. If the wear of the meshing teeth has exceeded the range, the gears should be replaced. Secondly, it should be checked whether the wear of the shaft sleeve affects the increase of the lateral clearance of the teeth.