What are reduction gearboxes used for?

Equipment used to convert the output shaft revolutions of the main engine to those required to rotate the propeller. Gearboxes consist of meshing teeth on pinions and wheels which transfer power from a drive shaft to a driven shaft and reduce speed.

What is the purpose of a gear in a gearbox?

Gears are used to transmitting the power from one shaft to another shaft. The amount of torque transmitted through the gears depends on the number of teeth and the size of the gears. Higher the gear ratio, higher the torque / acceleration and lower the speed.

Why is the reduction gear used in high speed engine?

However, the effective functioning of a propeller requires a relatively low rpm range. For this reason, a reduction gear is used, which reduces the high speed motion of the steam turbine into low rpm range required by the propeller.

What does reduced gear mean?

Definition of reduction gear : a combination of gears used to reduce the input speed (as of a marine turbine) to a lower output speed (as of a ship’s propeller)

How do gear boxes work?

It drives the individual gears on the main shaft, which rotate freely on the bearings. Thus, the gearbox passes the drive to the wheels depending upon the gear which engages on the main-shaft. When you push the shifter-sleeve towards the desired gear, that gear locks onto the main-shaft and rotates it.

Why is gear reduction important and necessary?

While in many applications gear reduction reduces speed and increases torque, in other applications gear reduction is used to increase speed and reduce torque. In parallel shaft gearboxes (or reducers), a pinion gear with a certain number of teeth meshes and drives a larger gear with a greater number of teeth.

What gear do you use for steep hills?

The low gears are best when driving up a steep hill. Before you change up a gear, make sure that you accelerate first, a bit more than you would on a flat road.