
The hydraulic system provides power to all of the dredging components. VMI cable operated horizontal dredges are
equipped with four independent hydraulic pumps to provide ample flow to all hydraulic components without
starvation. All continuously operated dredging functions are equipped with variable speed so you can optimize
between engine speed and hydraulic operation speeds.
A closed loop, heavy duty, variable speed piston pump and motor are used to run the centrifugal dredge pump. The
centrifugal dredge pump hydraulic system utilizes a high pressure filter, as well as a dedicated hydraulic tank. An
additional closed loop piston pump and motor are used to run the cutter head drive. This system also includes a
high pressure filter and has variable speed control. The traverse winch drive system uses a closed loop piston
pump and gearotor motor with variable speed. An open loop gear pump in conjunction with a two way self centering
valve with safety relief provides flow to the two heavy duty dual action hydraulic boom cylinders.
Enhanced filtration includes: suction and return, as well as high-pressure filters to extend the life of all hydraulic
mechanisms. Hydraulic oil coolers are also incorporated to allow the system to run continuously even in extreme
conditions without excessive heating. For added protection automated alarms and manual monitoring devices are
provided for each dredge function.

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VMI, Inc.
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1125 N. Maitlen Dr.
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Cushing, Oklahoma USA 74023
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Toll Free: (800) 762-2257
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Phone: (918) 225-7000
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Fax: (918) 225-0333
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Email: info@vmi-dredges.com
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VMI Horizontal Dredge Hydraulics
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