GF27.50-P-2100ACK Planetary Gear Set Component Description

GF27.50-P-2100ACK Planetary gear set component description
- Transmission 722.695

Component Identification:

Location
The planetary gear sets are located in the mechanical part of the transmission as front, center and rear planetary gear set.

Task
The planetary gear sets serve power flow and the formation of different gear ratios.

Component Identification:

A planetary gear set consists of the ring gear, the planetary gears supported on bearings in the planet carrier and the sun gear.

Function
The ring gear and sun gear components of a planetary gear set are alternately driven or stalled via the shift elements multidisk clutch and multidisk brake. In the process the planetary gears can roll on the inner internal toothing of the ring gear and on the outer toothing of the sun gear. This allows for a variety of gear ratios and the reversal of the rotation direction without the need for moving gear wheels or shift collars.

The torque conversion and rpm conversion takes place corresponding to the lever ratios or the ratio of the number of teeth of the driven to the driving gear wheels and is designated as the gear ratio i. With several planetary gear sets connected behind each other the overall ratio is given by the multiplication of part ratios.

If 2 components of the planetary gear set are connected rigidly with one another, the planetary gear set is locked and turns as a closed unit.

Advantages of a planetary gear set:
- Shifting ability under load
- Several ratios can be produced
- Constant meshing of the gears
- Simple direction reversal
- High efficiency
- Coaxial location of input and output
- Compact design





The following ratio alternatives are possible:
- Sun gear locked
- Ring gear driving
- Planet carrier driven
- Relatively small step-down ratio





- Ring gear locked
- Sun gear driving
- Planet carrier driven
- Relatively large step-down ratio





- Locking of two actuators together so that the planetary gear set rotates as a complete unit and direct power transmission results (i = 1)





- Planet carrier held
- Sun gear driving
- Ring gear driven
- Reversal of direction of rotation and step-down ratio