●
Driveshafts with constant velocity joints
(FWD)
transmit drive from the output of
the final drive to each front wheel. They
must also allow for suspension and steering
movements.
●
Propshaft with universal joints (RWD)
transmits drive from
the gearbox output to the
final drive in the rear axle. Drive then contin-
ues through the final drive and differential,
via two half shafts to each rear wheel. The
propshaft must also allow for suspension
movements.
Wheel bearings are also very important. They
allow smooth rotation of the wheel but must also
be able to withstand
high stresses such as from
load in the vehicle and when cornering.
Front bearings
Seal
Keeps out dirt and water, and keeps in the
grease lubrication
Spacer
Ensures the correct
positioning of the seal
Inner bearing
Supports the weight of the vehicle at the
front, when still or moving.
Ball bearings are used for most vehicles
with specially
shaped tracks for the
balls. This is so the bearings can stand
side loads when cornering
Swivel hub
Attachment for the suspension and
steering as well
as supporting the bearings
Outer bearing
As for inner bearing
Drive flange
Runs inside the centre race of the bearings.
The wheel is bolted to this flange
Transmission systems
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