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HBW SHORT PROFILE SAILING GEAR
DESCRIPTION
1.
BRIEF DESCRIPTION
The Type HBW Short Profile Sailing Gears are equipped with a positive-
ly driven, mechanically operated helical gearing system.
The servo-
operated multiple-disc clutch requires only minimum effort for gear
changing,
making
the
transmission
suitable
for
single-lever
remote
control via a rod linkage, Morse or Bowden cable.
The torque transmission capacity of the clutch is exactly rated, pre-
venting
shock
loads
from
exceeding
a
predetermined value
and
thus
ensuring maximum protection of the engine.
The
transmission
units
are
characterized
by
low
weight
and
small
overall dimensions.
The gearbox castings are made of a high-strength,
corrosion-resistant aluminum alloy, chromized for improved sea water
resistance and optimum adhesion of paint.
The transmissions are immersion-lubricated.
Maintenance is restricted
to oil level checks (see "Maintenance").
2 •
GEAR CAS ING
The rotating parts of the HBW transmission are accomodated in an oil-
tight casing divided
into two halves
in the plane of
the vertical
axis.
Amply dimensioned cooling ribs ensure good heat dissipation and
mechanical rigidity.
An oil filler screw wi th dipstick and an oil drain plug are screwed
into the gear casing.
The filler screw is provided wi th a breather
hole.
The shaft for
actuating the multiple-disc clutch extends through a
cover on the side of the gear casing.
3.
GEAR SETS
The transmission is equipped with shaved, casehardened helical gears
made of forged low-carbon alloy steel.
The mUlti-spline driving shaft
connecting the transmission with the engine is hardened as well.
The driven shaft (propeller side) of the transmission is fitted with a
forged coupling flange, except on the V-drive model.
114
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