
7Y-0639 21-Tooth Sun Gear
Cat® 21 tooth steel sun gear for use in planetary transmissions
Description
The sun gear is used to transfer rotation and torque between shafts. It is surrounded by two or more planetary gears that are connected to the input shaft, which in turn drive the planetary gears and the outer ring gear to achieve a specific gear ratio or transmission function.
Attributes
- Efficiently transmits high torque
- Precision machining and tooth profile help minimize noise and vibration
Applications
The sun gear is used to transfer torque from the planetary gears to the input shaft.
Specifications
| Material | Alloy Steel |
|---|
Compatible Equipment
- Excavators: 330D L, 330C L, 330C, 330D, 336D L, 328D LCR, 330 L, 330B, 325C, 336D




