Beveloid gears are used to accommodate a small shaft angle. The manufacturing technology used for
beveloid gearing is a special set up of cylindrical gear cutting and grinding machines.
A new development, the so called Hypoloid gearing addresses the desire of gear manufacturers for more
freedoms. Hypoloid gear sets can realize shaft angles between zero and 20° and at the same time allow a
second shaft angle (or an offset) in space which provides the freedom to connect two points in space.
The first application of Hypoloids is found in all wheel driven vehicles that use traditionally a transfer case with
a pinion/idler/gear arrangement or a chain. In those cases, the exit of the transfer case needs to be connected
with the front axle. The obstacle here is the fact that the propeller shaft between the transfer case and the front
axle will require two CV joints, because the front axle input point has a vertical offset and is shifted sideways
with respect to the transfer case exit. The tight packaging of modern vehicles requires the possibility to offset
the two connecting points of a front propeller shaft. However the penalty for such a design is the cost of two CV
joints as well as the reduced efficiency of the front drive train, which could range between 0. 5% and 2% of the
power that flows through the front axle.

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