What is the difference between expansion type and coaxial type of two-stage cylindrical gear reducer?

Coaxial reducer: the axes of input shaft and output shaft are on the same straight line. If it is the second stage, it is necessary to add an intermediate shaft.

Expansion reducer: the axes of input shaft and output shaft are on the same horizontal plane, for example, when the input shaft is on the left, it passes through the intermediate shaft and then reaches the output shaft on the right.

Extended data:

Types of reducers

1) cylindrical gear reducer: first-class cylindrical gear reducer, second-class cylindrical gear reducer, more than two stages. Layout: Spread, Split and Coaxial.

2) Bevel gear reducer: used when the positions of the input shaft and the output shaft intersect.

3) Worm reducer: it is mainly used in the situation of transmission ratio i> 10, and has compact structure when the transmission capacity is large. Its disadvantage is low efficiency. Archimedes worm reducer is widely used at present.

4) Gear and worm reducer: If the gear transmission is in the high-speed stage, the structure is compact; If the worm drive is at high speed, the efficiency is higher.

5) Planetary gear reducer: high transmission efficiency, wide transmission ratio range, transmission power12w ~ 50,000 kW, small volume and weight.