Imprint Contact 868 Videos
900.000 Callings


Wheel change
Save Energy

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

Video Force
Video Torque
Video Piston force

Video Axle drive 1
Video Axle drive 2
Video Axle drive 3

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

  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               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

Our E-Book advertising