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Wheel change
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Axle Drive
Rear Axle Drive
FWD (classic)
Front Axle Drive
Ring and Pinion
Hypoid Gearbox 1
Hypoid Gearbox 2
Locking Differential 1
Locking Differential 2
Locking Differential 3
Self locking 1
Self locking 2
FWD (cross) 1
FWD (cross) 2
FWD (cross) 3
FWD (longitudinal) 1
FWD (longitudinal) 2
RWD (front engine) 1
RWD (front engine) 2
RWD (front engine) 3
RWD (rear engine)
Mid-mounted Engine
Transaxle Drive
Planetary Power Axle
Smart Drive (f. view)
Smart Drive (s. view)
Powertrain Position
Bus with Low Floor
Tractive Power
All-wheel Drive
All-wheel History 1
All-wheel History 2
All-wheel History 3
All-wheel History 4
All-wheel History 5
All-wheel History 6
All-wheel Automatic
All-wheel Longitudinal 1
All-wheel Longitudinal 2
All-wheel Longitudinal 3
All-wheel Transverse 1
All-wheel Transverse 2
All-wheel Rear Engine
Ferrari FF
Bosch Hydro Drive
Locking Differential
Viscous Clutch
Torsen-differential 1
Torsen-differential 2
Electr. Differential Lock
Distrib. gearing 1
Distrib. gearing 2
Distrib. gearing 3
Distrib. gearing 4
Propeller Shafts 1
Propeller Shafts 2
Cardan Shaft
Cardan Joint
Constant Velocity Joint
Universal Joint
Universal joint (working)
Ball Joint
Dry Joint 1
Dry Joint 2
Driving Chain

Piston force

Axle drive 1
Axle drive 2
Axle drive 3


  Axle drive

Straight mounted engine - bevel- and crown wheel, transverse engine - spur gears

The final drive transfers the torque from the power-train to the shafts of the drive axle. In the case of the straight mounted engine, a diagonally cut cone and crown wheel combination (see figure 2) is always necessary. Transverse engines transfer their torque through diagonally cut spur wheels (see figure 2 on the right) to the drive wheels. The torque increases at the same ratio as the RPMs sink.

Motor car -> 2,5 - 4 : 1, truck -> higher, except with external planetary gears

The smaller bevel wheel or spur gear is linked to the gearbox, the larger, through a differential gear, with the driving wheels. The transmission ratio is, in motor cars 2,5- to to just under 4:1 and in trucks can be, particularly construction site vehicles, distinctly higher. The highest torque is generally reached on the axle drive shafts to the wheels. Tractors, trucks and busses with external planetary gears are the exception. In this case, also the transmission ratio between bevel gear and crown wheel is lower.

Diagonally cut or hypoid gear with axle offset

The same as in the gearbox, the gear wheels have diagonally cut teeth to achieve a quieter running and higher resilience. In the case of the hypoid drive, the axle of the bevel wheel is placed lower than that of the crown wheel. The outcome of this is a certain distance between the two center axles. The gear wheels are lubricated when the larger crown wheel dips into an oil bath thus distributing the oil in miniscule droplets. This type of lubrication is thus known as 'dip lubricating'.

Simpler pressure circulation possible in spite of dip lubrication

Only very seldom is this type of lubrication replaced by pressure circulation lubrication. Only then, If the highly accelerated oil is caught in a suitably formed pocket and e.g., is led back through a nearby oil cooler.

Tolerances according to the stamped in values

The crown wheel and bevel gear must always be replaced as a pair and their tooth backlash must be adjusted according to the stamped in values using a measuring gauge. This backlash was determined especially for this particular pairing in a quiet running test by the manufacturer. 09/09