April.2003

1
LSVHG Series High-speed Linear Servo Valves
LSVG-03 (3/8) LSVHG-04/06/10 (1/2,3/4,1)
Sub-plate Mounting
LSVHG-06

• April.2003
• YUKEN KOGYO CO.,LTD.

2
Outline

• LSVG/LSVHG Series High-Speed Linear Servo Valves
  offer extremely high response and excellent
  anti-contamination characteristics.
• An intensified small linear motor drives the
  spool directly.
• A differential transducer electrically
  detects spool position
• for feedback control.
•  
• These valves are suitable for the following
  machines
• which require high speed high precision
  control.
• High Speed Nibbling Machine
• High Speed Injection Molding Machine
• Die Casting Machine
• Steel Mill Equipment
• Testing Equipment

LSVG-03
3
Features

• High response characteristics
• LSVG-03 450Hz/-90(25 Amplitude),
• step response 2 ms (0-100)
• LSVHG-10 100Hz/-90(25 Amplitude),
• step response 8 ms (0-100)
• Excellent anti-contamination characteristics
• The valves can be used with fluid of which
• contamination grade is NAS class 10.
• Exclusive power amplifier to optimize
• valve characteristics are available.

SK1119
4
Line up
5
Specifications LSVG-03

• Note1 Back pressure for the drain port should
  be less than 0.05MPa and also not to be a vacuum
  pressure.
• Note2 The above characteristics are a measured
  value on each individual valve, which is
  dependant upon the hydraulic circuit, hence the
  figures may vary.

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Specifications LSVHG-04,06,10

• Note1) Max. T-Line Back Pressure should be less
  than the actual supply pressure.
• Note2) Back Pressure for the drain port should
  be less than 0.05MPa and also not to be a vacuum
  pressure.
• Note3) Supply Pressure of the Pilot Valve should
  be 1.5-35MPa (LSVHG-10 1.5-25MPa) and should also
  be more than 60 of the actual supply pressure
  when the valve is in operation.
• Note4) Pilot Flow is calculated on 14MPa of
  Pilot Pressure and the above stepped response.
• Note5) Volume of the Internal Drain is the
  total volume from main and pilot spools.

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Structure
LSVG-03-40-10
LSVHG-04/06/10
Body
Cover-A
Cover-B
LVDT
Spring -B
Spring follower
Spool
Spring-A
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Model Number Designation
9
Dimensions
10
Performance data
Flow gain
LSVHG-04-750-(2P)-(E)(T)-10
?Nearly zero point
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Performance data
Flow characteristics
LSVHG-04-750-(2P)-(E)(T)-10
Torelance of flow characteristic Servo valves
torelance of flow characteristic is normally
10 value.
12
Performance data
Step response
Pressure14MPa Pilot pressure 14MPa Oil
viscosity 30mm2/s
LSVHG-04-750-(2P)-(E)(T)-10
FlowP?B?A?T
FlowP?A?B?T
13
Performance data
Frequency response
Pressure14MPa Pilot pressure 14MPa Spool stroke
25 Oil viscosity 30mm2/s
LSVHG-04-750-(2P)-(E)(T)-10
14
Applications

• High Speed Injection Molding Machine
• High Speed Nibbling Machine
• Die Casting Machine
• Steel Mill Equipment
• Testing Equipment
• Simulator

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Equivalent Models
Nothing ???
Nothing ???
Nothing ???
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End Cover

• Doc.No.PPD.2798
• Compiled by YUKEN Product Planning Section
• Date of issue4/03/2003
• Reference Publication
• Pub.No EL-0610-1
• Title LSV(H)G High-speed Linear Servo Valve
• Date of issue 12/04/2002 Date of revision
  03/14/2003

• ALA Industries Limited.
• 1150 Southpoint Drive, Suite D
• Valparaiso, IN 46385
• Tel [phone], Fax [phone]
• www,yuken-usa.com

• YUKEN KOGYO CO., LTD.
• International Business Department
• 1 Miyamae, Fujisawa, Kanagawa Prefecture,
  251-8525 Japan
• Telephone[phone] Facsimile81-466-27-71
  00
• e-mailint.bd_at_yuken.co.jp Internetwww.yuken.co.
  jp