Function and use of S series reducer

　　S series reducerIt is an independent closed transmission device between the prime mover and the working machine. Used to reduce the speed and increase the torque to meet the needs of the work. In some cases, it is used to increase speed. The choice of reducer should be based on the selection conditions of the working machine, technical parameters, power machine performance, economy and other factors, compare different models, varieties of reducer profile size, transmission efficiency, carrying capacity, quality, price, etc., select the appropriate reducer. S series reducer is a relatively sophisticated machine tool, the use of the purpose is to reduce speed, increase torque. S series reducer is mainly composed of transmission parts (gear or worm), shaft, bearing, box and its accessories. The basic structure has three main parts:

The pinion and the shaft are integrated and are called gear shafts. This structure is used when the diameter of the gear is not related to the diameter of the shaft. If the shaft diameter is D and the gear root circle diameter is DF, this structure should be adopted when the DF-D is ≤ 6 ~ 7Mn. When the df-d is> 6 ~ 7MN, the gear and the shaft are separated into two parts: the low-speed shaft and the large gear. At this time, the gear is connected with the circumferential fixed flat key of the shaft, and the parts on the shaft are axially fixed by the shaft shoulder, the shaft sleeve and the bearing seat. Both shafts use deep groove ball bearings. This combination is used to withstand radial loads rather than large axial loads. When the axial load is large, angular contact ball bearings, tapered roller bearings or deep groove ball bearings and thrust bearings should be used. The bearings are lubricated by the thin oil that splashes when the gear rotates. The lubricating oil in the oil pool in the tank seat is splashed by the rotating gear to the inner wall of the tank cover, flows along the inner wall to the tank surface groove, and flows into the bearing through the oil guide groove. When the circumference speed of the oil-immersed gear is υ ≤ 2 m/s, the bearing should be lubricated with grease. To avoid possible splashing of thin oil to wash off the grease, use an oil retaining ring to separate it. In order to prevent the loss of lubricating oil and external dust into the box, a sealing element is installed between the bearing end cover and the extension shaft.

The box is an important part of the reducer. The foundation is the transmission part, which should have sufficient strength and rigidity. The box body is usually made of gray cast iron, and the cast steel box body can also be used for heavy load or impact load reducer. Single production of S series reducer, in order to simplify the process, reduce costs, can use steel welding box. Gray cast iron has good casting properties and damping properties. In order to facilitate the installation and removal of shafting components, the box body is made into a horizontal section along the axis. The upper box cover and the lower box are bolted together. The connecting bolts of the bearing seat should be as close as possible to the bearing seat hole. The boss beside the bearing seat should have enough support surface to place the connecting bolts, and ensure the wrench space required when tightening the bolts. In order to ensure that the box has sufficient rigidity, support ribs are added near the bearing hole. In order to ensure the stability of the reducer placed on the foundation and reduce the processing area of the box base plane as much as possible, the box base generally does not use a complete plane.