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These are commonly used inside the differential on an Automobile.
Differential, many times called the rear-end or third member.
In an automobile, the differential allows each of the driving wheels to rotate at different speeds, while supplying equal torque to each of them. In automotive applications, the differential and its housing are sometimes collectively called a "pumpkin" (because the housing resembles a pumpkin).
Parts of a vehicle like the driveshaft, differential and axles. Commonly anything after the gearbox going to the wheels.
Differential gears in an automobile's drivetrain allow the driving wheels to transmit torque, or twisting force, at different turning rates. Thus one wheel can follow the longer arc around the outside of a turn while the other wheel tracks the shorter inside arc without skidding on the road surface.
The differential is an assembly of gears located between the drive axles. It's purpose is to allow the drive wheels to move at different speeds while maintaining power to both. This lessens tire wear and improves handling.
The differential in a tractor greatly multiplies the power generated by the motor - enabling it to do more work.
a transfer case is found in 4 wheel drive vehicles it transfers power to the front differential. It is mounted to the rear of the transmission.
Go to youtube; type in "differential gear", there is an old 9 minute video demonstrates how they work very well.
Mercadies automobile
in the automobile industry
Differential oil will work fine dude or even gear box oil.dude