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AXLE SHAFT SEMI-FLOATING
- Shaft that carries vehicle load and transmits torque.
BACKLASH - The amount of
clearance or play between two meshed gears.
BANJO-AXLE DESIGN - An
axle assembly with a final drive assembly that assembles into the
housing and is bolted into place.
BEARING CAP - The
portion of the axle housing that is bolted in place to secure the
differential bearings and differential assembly.
BEARING CONE - The inner
race of a tapered roller bearing.
BEARING CUP - The outer
race of a bearing assembly.
CARRIER - The casting
center section of a drive axle that contains the differential assembly,
ring gear, pinion gear and support bearings.
CENTER SECTION - The
carrier portion of a drive axle.
COAST - A load condition in which the vehicle is driving the engine, as during deceleration. DECELERATE - To reduce
speed.
DIFFERENTIAL - A gear
arrangement that allows the drive wheels to be driven at different
speeds and divides the input torque of one shaft between two output
shafts.
DRIVE - A load condition in which the engine is applying power to the wheels. DRIVE GEARS - A large
gear that meshes with a smaller gear. Also known as a Crown Gear.
END YOKE - Yoke-shaped
forging that forms part of the universal joint connection the drive
shaft to the transmission or axle.
EXTREME PRESSURE (EP)
LUBRICANT - A lubricant designed to stay in place and keep the gears
from touching when under extremely high pressure (e.g., heavy torque
loads).
SALISBURY AXLE DESIGN -
Axle assembly with final drive components assembled into one piece
housing.
SHIM - A thin spacer
used to adjust preloads and ring gear to pinion gear backlash may also
be used for controlling pinion gear positions.
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FLOAT - A load condition
where two parts are turning at the same speed with no driving force
between them.
FLANGE YOKE - Same as an
end yoke except circular in design.
FULL-FLOATING AXLE -
Axle shaft which transmits torque only and carries no vehicle load.
GEAR - A wheel with
teeth that transmits power or motion to another gear.
GEAR RATIO - The ratio
in the number of teeth on the driving and driven gears; it is
calculated by dividing the number of teeth on the driven gear by the
number of teeth on the driving gear.
HEEL - The outer end of
a bevel or hypoid ring gear tooth.
HOUSING - Portion of the
axle assembly that consists of the carrier and axle tubes.
HYPOID GEAR - A special
form of bevel gear that positions the gear axis on non-intersecting
planes and is commonly used in drive axles.
LIMITED SLIP
DIFFERENTIAL - Differential in which the difference in rotational speed
or torque between two output shafts is mechanically limited to prevent
wheel spin on difficult terrain.
NEWTON METER (N.M.) -
The metric measurement of torque.
PINION GEAR - A small
gear that meshes with a larger gear.
PITCH LINE - The
effective diameter of a gear; midpoint of the gear tooth.
PRELOAD - A load placed
on parts during assembly to maintain critical clearances and
adjustments when operating loads are applied.
R.T.V. - A
formed-in-place gasket material; a rubber like compound that vulcanizes
at room temperature.
TOE - The inner end of a
bevel or hypoid ring gear tooth.
TORQUE - A turning or
twisting force that is normally measured in pound-feet or Newton meters.
VISCOSITY - The
resistance to flow of a fluid.
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