[PDF] Modular Type Electro-hydraulic Proportional Flow Control Valve

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Electro-hydraulic control valve

MODULAR TYPE ELECTRO-HYDRAULIC

PROPORTIONAL FLOW CONTROL VALVE

Modular Type Electro-hydraulic

Proportional Flow Control Valve

0.3 to 25/min

21MPa

An electro-hydraulic proportional re-

strictor valve and pressure compensa- tion valve are combined into a modular con?guration, available as one of two types: the meter in control EOF-G01-P and meter out control EOF-G01-T.The pressure ?uctuations have little in- ?uence on the setting ?ow rate making this valve perfect for electro-hydraulic proportional control of small hydraulic systems used for machine tool APC and ATC high-speed shockless control, remote control, etc.Handling zAir Bleeding

To enable proper pres-

sure control, loosen the air vent when starting up the pump in order to bleed any air from the pump, and fill the inside of the solenoid with hydraulic operating fluid. The position of the air vent can change by loosening the lock screw and rotating the cover. xManual flow rate adjusting screw

For the initial adjustment or when there is no input current to the valve due to an electrical problem or some other reason, the flow rate can be ad-

justed by rotating the manual adjust- ment screw. Rotate clockwise (right- ward) to increase flow rate.

Normally, this adjusting screw should be returned completely to its original position and secured with the lock nut.

cT Port Back Pressure

Since this valve has an internal drain system, make sure that valve T port back pressure is no greater than 2.5MPa {25.5kgf/cm

2 vUse an operating fluid that conforms to the both of the following. Oil tem- perature: -20 to 70°C Kinematic Vis- cosity: 12 to 400mm2 /s. The recom- mended kinematic viscosity range is

15 to 60mm

2 /s. bO-ring Plate Orientation q The port nearest the nameplate surface is the P port. w The port with a mounting pitch width of 31 (narrow pitch width) is the A port. e The cutout on the O-ring plate is on the A port side.

P T B A

x

EOF-G01-P25

EOF-G01-T25

EOF 01 - P 25 - 11

Note) Value when a Nachi-Fujikoshi special ampli?er is used (with dithering).

Design number

Rated ?ow rate

Control port: P, T

Nominal diameter 01

Mounting method G: Gasket type

Modular type electro-hydraulic proportional ?ow control valve

EOF-G01-P25-11EOF-G01-T25-11Model No.

ItemEOF-G01-P

T 25-11

Maximum Operating PressureMPa{kgf/cm

2 }21{214}

Flow Rate Control Range/min0.3 to 25

Flow Rate Control Port

EOF-G01-P : P port

EOF-G01-T : T Port

T Port Allowable Back PressureMPa{kgf/cm

2 }2.5 {25.5} max.

Hysteresis%3 max. (Note 1)

Response SpeedS0.05

Rated CurrentmA800

Coil Resistance20 (20°C)

Weightkg3.7

Features

Specifications

Explanation of model No.

Installation Dimension Drawings1.440

32.565105

4- 5.5 hole

Nameplate

M4 set screw

(hex Width across ?ats 2)

Manual ?ow rate adjusting screw

Air vent (Air bleeding)

(hex width across ?ats 3) ABT P

3132.546

2140.5

80

1157MAX 110.8

MAX 232.8

M4 set screw

(hex Width across ?ats 2) B P T A

4- 5.5 holeManual ?ow rate

adjusting screw

Nameplate

Air vent (Air bleeding)

(hex width across ?ats 3)

2140.5

80

1157MAX 110.8

MAX 232.8

3132.546

105

1.4 65

32.538.6

Electro-hydraulic control valve

Input Current -

Flow Rate

CharacteristicsPressure -Flow RateCharacteristics

Oil Temperature

Characteristics

EOF-G01-T25

Note) Coil model number

JD64-D2

Seal Part List (Kit Model Number JMS-G01)

Note) The materials and hardness of the O-ring conforms with JIS B2401.

Manual adjustment

section

Part No.Part NamePart NumberQ'ty

16O-ringAS568-012(NBR-90)4

17O-ringNBR-90 P181

18O-ringNBR-90 P94

19O-ringNBR-90 P51

20O-ringNBR-90 P201

21O-ringNBR-90 P201

Performance Curves

Hydraulic Operating Fluid Kinematic Viscosity 32mm 2 /s

Cross-sectional Drawing

Part No.Part Name

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

051015202530

0 200 400 600 800 1000

Input current mA

Flow rate /min

051015202530

0 5 {51} {102} {153} {204}10 15 20

Pressure MPa {kgf/cm

2

Flow rate /min

051015202530

10 20 30 40 50 60

Flow rate /min

Oil temperature C

quotesdbs_dbs14.pdfusesText_20

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