The main structure of the NGW102-18 reducer is composed of core components such as sun gear, planetary gear, internal ring gear, and planetary carrier. It belongs to the secondary transmission series of NGW type planetary gear reducer and has the characteristics of compact structure and strong load-bearing capacity.
The specific composition of this type of reducer can be broken down as follows:
1. The sun gear is located in the center of the transmission system. As a high-speed input component, it is connected to the motor shaft directly or through a coupling. Its external teeth mesh with multiple planetary gears to transmit power to the planetary gear train.
2. The planet wheels are evenly distributed around the sun wheel, usually 3 or more, and are installed on the planet wheel shaft of the planet carrier. The planetary gear meshes with the sun gear and the internal ring gear at the same time, and rotates and revolves during operation to achieve power splitting and deceleration functions.
3. The internal ring gear is fixed to the inner wall of the reducer case. It is an internal meshing gear structure. The ring gear does not rotate and plays the role of support and reaction force. Its internal teeth mesh with the planetary gear and cooperate with the sun gear to complete the transmission ratio adjustment.
4. The planet carrier supports and drives the planet wheel to rotate and is one of the output components. The planet carrier converts the revolution of the planet wheel into the low-speed and high-torque rotation of the output shaft, which is directly connected to the load equipment.
The box body is made of ductile iron, which has good rigidity and vibration resistance; each rotating part is equipped with high-precision rolling bearings to ensure smooth operation of the shaft system.
6. Floating mechanism design In order to achieve even load distribution, the NGW series often adopts a toothed floating structure, which allows the sun gear or planet carrier to float axially within a small range, automatically compensates for assembly errors and deformations, and improves transmission reliability.
It is worth noting that NGW102 is a two-stage reducer with a transmission ratio of 18, which belongs to the medium speed ratio range and is suitable for heavy-duty machinery scenarios such as metallurgy, lifting, and transportation. The input speed generally does not exceed 1500r/min, and the gear peripheral speed is ≤10m/s.
