Flow And Pressure Requirements - Stanley MSD 1000 Safety, Operation & Maintenance Manual

FLOW AND PRESSURE REQUIREMENTS

The following table prvodes the MSD Saver Series Mobile Shear fl ow and pressure requirements for the open and close
function. Please note that all models include speed valves; also note that these calculations are theoretical and that actual
cycle times will vary depending upon the specifi c excavator's hydraulic effi ciency, possible back pressure in the system,
operator competency, etc. These cycle times are calculated with not material in the jaws. The cycle times will be longer
when maximum shear force is required (shear will go out of "speed valve mode").
SHEAR RECOMMENDED
MODEL PRESSURE RANGE
MSD 1000
MSD 1500
MSD 2000
4000 - 5500 PSI
MSD 2500
(276-379 BAR)
MSD 3000
MSD 4000
MSD 4500
MSD 7500
MSD 9500
NOTICE
• Rotation Circuit - 8-12 GPM @ 2000 - 2500 PSI. A 1/2" case drain line going from the hydraulic rotation
motor to the excavator's hydraulic tank is required to relieve back pressure.
• Pump summation or dual pump fl ow is recommended for shear munting second-member on most
excavators. Due to the increase in fl ow, there may be a requirement to add larger hydraulic lines or dual
lines up the boom to minimize back pressure, reduce heat and maximize shear performance.
MSD SABER SERIES SHEARS
REQUIRED FLOW (GPM) TO MEET
8, 10, 12, AND 14 SECOND CYCLE TIMES
8 SEC 10 SEC 12 SEC
50 40
60 48
110 90
150 130
160 140 120
-- 170 150
-- 175 150
-- 241 201
-- 350 292
14 SEC
-- --
40 --
70 60
110 94
103
128
128
172
250
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