The Final Drive is the last gearing used while transmitting the engine power to the wheels. It has two purposes. Firstly, it turns the power flow at the right angle from the propeller shaft to the rear axle. Secondly, it also provides a mechanical advantage (leverage) from the propeller shaft to the rear axle.
What is function of final drive?
The final drive is a component of an excavators power transmission system and is located between in the rear of the machines undercarriage opposite of the blade. A final drives main function is to reduce the speed of the propeller shaft by decreasing RPMs and increasing the torque.
What does the final drive consist of?
The final drive is an assembly of gears in the back axle of rear-wheel drive (= with engine power going to the rear wheels) vehicles and in the front axle of front-wheel drive (= with engine power going to the front wheels) vehicles. The last set of gears in the drive train is the final drive.
What are the two functions of the final drive?
The final drive unit has three functions to perform: it gears down the speed of the propeller shaft to a suitable road wheel speed, it divides the transmitted torque from the engine between the two driving wheels and, except in the case of a transverse engine, it turns the drive through a right angle, transferring it ...
What is the best gear ratio for drag racing?
If its a daily driver, chances are youll want to keep your gear ratio at 3.23 or below for optimal performance and lower cruising RPMs. For street and strip applications, a popular choice ranges between 3.42s and 3.90s, giving you that extra oomph on the track while maintaining a tolerable cruising RPM on the street.
Why do final drives need special lubricant?
Gear oil is a key component in your final drive as it serves to cool, lubricate, and protect. Contamination and degradation can reduce the ability of gear oil to perform those tasks, making the useful life of your final drive proportional to how regular you are about changing out the gear oil.
Which type of gears are used in final drive?
The pair of gears providing the final drive are usually a bevel pinion and crown wheel or a worm and wheel.
Is Thicker gear oil better?
Higher viscosity provides a thicker film, higher wear resistance, and less deformation of the gears as time goes on. Low viscosity oils, on the other hand, are best for high speed systems with lower load. They provide a thinner film and better cooling to match the higher speed of the gearbox in question.
What would be the typical lubricant used in final drive assembly?
Gear oil Gear oil, also referred to as gear lube, is the lubricant for the planetary side of a final drive.
Whats thicker 75W90 or 75W140?
So, the difference between 75W90 and 75W140 is that at operating temperature, the 75W140 will be considerably thicker than the 75W90 but at room temperature they will be about the same viscosity.