GD Series
GENERAL CHARACTERISTICS AND FEATURES
The GD
series is a crankshaft design radial pistonhydraulic motor based on a
nine-cylinder design.These motors use several standard components, partsof
well-proven constant displacement motors (GMseries) for greater
performance and reliability.The nine cylinders design guarantees a smooth
out-put torque, the variable shaft eccentric is based on asimple reliable
mechanism. DESIGN AND OPERATION OF THE TWO SPEED
SYSTEM
Dual displacement is achieved by a variation of theshaft
eccentric cam. The displacement controlsystem is based on a hydraulic
device, whichactuates a hydraulic control valve mechanism toselect minimum
or maximum displacement. Thedual displacement mode allows the motor
toreduce the displacement down to the 10% of themaximum, hence making the
speed ten time higher
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