Why is the transmission efficiency of gear reducer higher than that of worm gear reducer?

The higher transmission efficiency of gear reducers compared to worm gear reducers is mainly due to the following aspects:
The gear transmission method of a gear reducer is more direct and has higher transmission efficiency compared to the rolling transmission method of a worm gear reducer. The higher the accuracy and manufacturing process of gear profile shape, the higher the efficiency of gear transmission. The worm gear reducer will generate significant axial and radial forces during transmission, which will cause energy loss due to rolling friction, thereby reducing transmission efficiency.
The bearing arrangement of gear reducers is more reasonable than that of worm gear reducers, and the friction loss is smaller. The bearing arrangement of gear reducers is usually supported at both ends or inside and outside, which can effectively reduce bearing friction loss and improve transmission efficiency. The bearing arrangement of worm gear reducers is usually internal or external support, which will cause the bearings to bear a larger radial load, resulting in more friction losses.
The manufacturing cost of gear reducers is relatively low, making it easier to optimize design and manufacture, thereby improving transmission efficiency. In contrast, the manufacturing cost of worm gear reducers is higher and the manufacturing difficulty is greater.
Therefore, overall, the transmission efficiency of gear reducers is higher than that of worm gear reducers. However, in some specific application scenarios, worm gear reducers also have certain advantages. For example, in situations where large reduction ratios and torque transmission are required, worm gear reducers are usually more suitable than gear reducers.