SAILTEC's Kobelt Kabel-Hebel Katalog - page 35

p u s h - p u l l c o n t r o l s
33
STEER I NG PRODUCTS FOR AL L APPL I CAT I ONS
Kobelt manufactures steering cylinders from 1.25” I.D. up
to 10” I.D. in strokes varying from 3” up to 6’. All piston rods are
hard chromed and polished stainless steel.
Cylinders up to 3.5” bore have brass cylinder tubes; all other
components are manufactured in die-cast bronze or stainless
steel. Cylinders with a 4” bore and up have cylinder tubes and
spherical bearings made from steel with all other components
stainless and either die-cast or sand-cast bronze.
All low pressure operating cylinders are available in both
balanced and unbalanced versions. The high pressure cylinders
with 4” through 10” I.Ds. are only available in the unbalanced
style. Unbalanced cylinders must be used in pairs in a steering
system. If a single cylinder is used in a manual steering system, it
is of utmost importance that the cylinder be of the balanced type.
“Balanced” means that the cylinder piston rod extends
out of both ends of the cylinder tube, giving an equal volume
of oil on both sides of the cylinder piston. This ensures a
balanced torque on the steering components, as well as an
equal number of wheel turns in both directions. A manual
helm pump has a relatively small reservoir, and using an
unbalanced cylinder could cause the reservoir to overflow or
the pump to run dry, either of which could disable the steering
system.
“Unbalanced” cylinders have the piston rod extending out
from only one side of the cylinder. Though occupying significantly
less space in terms of “length”, the result is added force on the
side of the piston without the rod, making it the advantage of the
unbalanced cylinder. When the two cylinders are plumbed, the
hydraulic lines are crossed at the cylinders thus ensuring equal
volume displacement in both directions.
W E A L S O M A N U F A C T U R E
L A R G E S Y S T E M S F O R V E S S E L S U P T O 1 5 0 M E T R E S .
Header Tank
Auto Pilot Pump
Jog Lever
Safety &
Bypass
Valve
Cylinder
O P T I O N A L
B A S I C S Y S T E M
Helm Pump
1...,25,26,27,28,29,30,31,32,33,34 36,37,38,39,40
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