The MCV106A Hydraulic Displacement Control (HDC) is
a cost-effective hydraulic pump stroke control which
uses mechanical feedback to establish closed-loop
control of the swashplate angle of Sundstrand Series 2X
and Series 3X pumps.
The HDC accepts a differential hydraulic pressure signal
from a control handle or servovalve and uses the
arrangement and port oil to the pump servocylinders.
The spool configuration allows a null deadband for
machine safety in the pump's output while maintaining
optimum dynamic response to control commands.
Servo control deadband independent of signal null
deadband: offers safety combined with accurate and
Resistant to the environment: shock, vibration and
High porting spool force resists chip plugging
Swashplate movement can be visually detected at the
* Low cost
-40° to 121° C (-40° to 250° F) operating range
21° to 82° C(70" to 180° F) rated performance range-
21° to 104" C (70° to 220° F) rated performance
MINIMUM SYSTEM FILTRATION
50 g for 11 milliseconds. Three shocks in both
directions of the three mutually perpendicular axes
for a total of 18 shocks.
Withstands a vibration test designed for mobile
equipment controls consisting of two parts:
Cycling from 5 to 2000 Hz in each of the three
Resonance dwell for one million cycles for each
resonance point in each of the three axes.
Subject to acceleration levels of 1 g to 46 g.
Acceleration level varies with frequency.
148 psid (MCV106AXX01)
430 paid (MCV106AXX02)
218 paid (MCV106AXX03)
.4% of modulating range when cycled at .01 Hz
12 psid (MCV106AXX01)
120 psid (MCV106AXX02)
217 psid (MCV106AXX03)