Carrier Set No.1 in excavator gearbox

 Let's break down its function in relation to gear levels:

Gear Support and Rotation: The carrier holds multiple gears, each corresponding to a different gear level (such as first gear, second gear, etc.). As the input shaft rotates, these gears are engaged or disengaged to provide different gear ratios, altering the speed and torque output of the gearbox.

Load Distribution: Bearings within the carrier distribute the loads generated by the engaged gears across the gearbox housing. This ensures that the forces are evenly distributed, preventing excessive stress on any particular component and maintaining gearbox integrity.

Transmission of Torque: Each gear mounted on the carrier corresponds to a specific gear ratio. When a gear is engaged with the input shaft, torque is transmitted from the input shaft through the carrier and the engaged gear to the output shaft, allowing the excavator to operate at the desired speed and power level.

Reduction of Friction and Wear: Bearings within the carrier reduce friction between the rotating gears and the carrier itself. This minimizes wear on the gears and prolongs their lifespan, ensuring smooth gear engagement and reliable operation over time.

Alignment Maintenance: Proper alignment of the gears on the carrier is crucial for smooth gear shifting and efficient power transmission. The carrier ensures that the gears remain properly aligned and meshed, preventing issues such as gear slippage or tooth wear.

Vibration Damping: By supporting and stabilizing the rotating gears, the carrier helps dampen vibrations generated during gear operation. This contributes to smoother gear shifting and reduces noise and vibration levels within the gearbox.

In summary, the carrier set with gear, bearing, and pin facilitates the transmission of power between different gear levels in the excavator gearbox. It supports, aligns, and distributes loads among the gears while minimizing friction and wear, ensuring efficient and reliable operation of the gearbox across various operating conditions.