The difference between hard reducer and soft tooth surface reducer

With the development of industry and the continuous development of people's manufacturing process, the performance of the hardened reducer is continuously enhanced. In the reducer, the gear materials we often see are mainly medium carbon steel, medium carbon alloy, cast steel, etc. With the widespread use of hardened gear reducers, many of us will find that gear failures often occur in the equipment, such as tooth root fatigue and fracture, tooth surface pitting, etc. In fact, these are related to the hardness and quality of gears. relation. According to the gear tooth surface meshing, it is divided into hard tooth surface reducer and soft tooth surface reducer. Let's take a look at their main differences in application.

1. The hardness of the tooth surface of the soft tooth surface is mainly less than or equal to 350hds. At least one soft tooth surface needs to exist beside a pair of gears. It is mainly used in some ordinary medium and low speed gear transmissions that do not require much accuracy. sideways.

2. The hardness of the gears of the hard-toothed reducer is mainly greater than 350hbs, and both of its gears are hard-toothed, which are often used in gear transmissions with relatively strong bearing capacity and relatively small volume. We usually consider the following points when designing:

1. In the normal working environment, the soft tooth surface steel gear transmission of less than or equal to 350hbs is mainly based on the strength of the tooth surface contact of the reducer, and is planned according to the fatigue strength of the tooth surface contact;

2. The gear drive of the hardened gear reducer with closed hardened surface. It needs to be designed according to the fatigue strength of tooth root bending;

3. The open gear of the hard tooth surface reducer rolls. The main failure form is the wear of the tooth surface or the breakage of the gear teeth. Therefore, the influence of the wear of the hardened gear reducer should also be considered when planning.