1、 Precautions for safe use

1. Strictly prohibit starting with load
   • Before starting, it is necessary to ensure that the gearbox is in an unloaded state to avoid damage to the gears or bearings due to impact loads. After replacing the parts, they must undergo running in and load testing before they can be put into normal use.
2. Avoid directly tapping the output shaft
   • When installing couplings, pulleys, and other connecting components, hammering should not be used. Instead, screws should be inserted through the shaft end screw holes to prevent damage to the output shaft structure.
3. Ensure that the ventilation cap (exhaust plug) is unobstructed
   • When the gearbox is running, gas will be generated inside the box. If it is blocked, it will cause temperature rise, oil seal expansion, and oil leakage failure. Regularly inspect and clean the ventilation cap.
4. Control the working environment temperature
   • The standard working environment temperature ranges from -5 ℃ to 40 ℃, and synthetic oil is required for high-temperature conditions. The maximum temperature in a short period of time can reach 100 ℃. Avoid operating in environments that exceed the rated temperature.
5. Prevent foreign objects from entering
   • Keep the surface of the gearbox clean, regularly clean dust and dirt, and prevent impurities from entering the interior of the gearbox, which may affect the life of the gears and bearings.
6. Follow the operating procedures
   • Before starting, manual turning is required to confirm that there is no jamming phenomenon; During operation, conduct an hourly inspection to observe the fuel supply, oil temperature, vibration, and noise of the oil pump. If any abnormalities are found, immediately stop the machine for inspection.

2、 Maintenance precautions

1. Lubricating oil management
   • Oil level checkRegularly confirm the oil level through the dipstick or oil level mirror, and replenish the oil promptly when it is below the lower scale line.
   • Oil quality replacement：
     • Replace the lubricating oil after running for 300-400 hours, and then replace it every 1500-2000 hours thereafter.
     • Under harsh working conditions (high temperature, high dust), it is necessary to shorten the oil change cycle and check the oil quality every half month. If any dirt is found, it should be replaced immediately.
     • When changing the oil, it is necessary to clean the oil tank or tank, and synchronously clean or replace the filter element of the lubrication station.
   • Oil selectionUnified use of medium load industrial gear oil, and mixing of different grades or types of oil is strictly prohibited.
2. Inspection of fasteners and seals
   • Regularly check the tightness of all fasteners (such as bolts and nuts) to prevent looseness from causing leakage or abnormal vibration.
   • Check if the seals (such as oil seals and radial sealing rings) are damaged, and replace them promptly if any leaks are found.
3. Heat dissipation and ventilation maintenance
   • Keep the surface of the reducer clean, ensure that the ventilation holes are unobstructed, and avoid excessive oil temperature caused by poor heat dissipation.
   • If equipped with cooling coils, it is necessary to check whether the shut-off valve of the cooling water circulation system is open and the pressure should not exceed 0.8 MPa.
4. Regular trial operation and troubleshooting
   • After installation, conduct a 2-hour no-load test run, and then load gradually at 25%, 50%, and 75% loads until full load operation.
   • After the load is running, check whether the tooth surface contact and fasteners are loose, record the oil temperature, oil pressure, and bearing temperature, analyze the cause of the abnormality and handle it.
5. Long term storage management
   • The reducer should be stored in a dry, ventilated, sun protected, and moisture-proof warehouse, and the oil seal is valid for 6 months.
   • After the expiration date, the rust proof oil needs to be cleaned before installation. During storage, the moisture in the oil should be checked every 400 working hours, at least once a year.

3、 Special working condition precautions

1. Vertical installation
   • The amount of lubricating oil added should be greater than that of horizontal installation, which is prone to heating and oil leakage. Therefore, it is necessary to strengthen oil temperature monitoring and seal maintenance.
2. Impact load and frequent start-up
   • The machine base and foundation should be equipped with positioning pins to prevent coaxiality deviation caused by vibration, which affects transmission accuracy.
3. Corrosive environment
   • Choose corrosion-resistant materials and sealing structures, regularly inspect the box and connections for rust, and promptly carry out anti-corrosion treatment.