China's industry is remembered by the world, and its gear industry is the leader in the world's gear industry. The development goal of China's gear industry is to promote China to become a strong country in gear manufacturing and export. Luo Baihui expressed that in the process of progress, China's gear industry will reveal four major situations: the market will reveal a large number of gear new products with international standards and independent intellectual property rights. It can be widely used in industrial sectors such as metallurgy, mining, chemical industry, building materials, lifting, transportation, textile, papermaking, instruments, plastics, rubber, engineering machinery, energy, etc. The high-speed shaft rotation of the hard toothed cylindrical gear reducer shall not exceed 1500 revolutions per minute. The circumferential speed of gear transmission shall not exceed 20 meters per second. The working environment temperature is -40-45 ℃. If it is below 0 ℃, the lubricating oil should be preheated to above 0 ℃ before starting. This reducer can be used for both forward and reverse operation. **Replace the lubricating oil after repeated use or replacement of the worm gear pair, and after running for 150-400 hours, the oil change cycle in the future should be less than or equal to 4000 hours. Regularly check the amount and quality of oil, retain sufficient lubricating oil, and promptly replace oil mixed with impurities or deteriorated. The oil injection amount must be in accordance with the requirements of the table. Different grades of oil are prohibited from being mixed, and oils with the same grade but different viscosities are allowed to be mixed. The oil injection quantity is listed in Appendix 1, and the oil product is listed in Appendix 2. The working environment temperature of the reducer is -40 to+40 ℃. When the ambient temperature is below 0 ℃, the lubricating oil must be heated to above 0 ℃ or low freezing point lubricating oil must be used before starting.