The lubricating oil external circulation gear of the worm equipment reducer tools has minimal oil temperature. The worm gear reducer plans to traverse its energy. The worm gear is produced of non-ferrous steel. Grasp information worms are generally produced of hard metal. Therefore, utilizing a great deal of warmth in the software, coupled with the impact of the ambient temperature, it is hard to handle the temperature of the reducer. Use in the temperature range. When the ambient temperature is reduce than 0℃, the functioning temperature of the worm gear reducer must be managed at -40℃~40℃. It is advisable to warmth or use a lower freezing stage lubricant before the oil is entirely dissolved.