SERIES■ Proportional Electro-Hydraulic Relief Valves
This valve is derived by combining a small, high-performance 1/8
proportional electro-hydraulic pilot relief valve with a specially developed
low-noise relief valve.
With this valve, it is possible to regulate the system pressure in proportion tothe input current. Note that this valve is used in conjunction with theapplicable power amplifier.

■ Specifications
Model Numbers

EBG-03

EBG-06

EBG-10

MPa

24.5

24.5

24.5

Max. FlowL/min

100200400

Min. Flow

L/min333

Descriptions

Max. Operating Pres.

Pressure Adjustment Range MPa
Rated Current

mA

Coil ResistanceΩ

Refer to Model Number Designation

C: 770
H: 820

C: 750
H: 80010

C: 730
H: 7801010Hysteresis

3% or less

3% or less

3% or lessRepeatability

1% or less

1% or less

1% or less

5.6

6.3

10

Approx. Mass

kg

Without Safety ValveWith Safety Valve

E Series
Relief Valves

Graphic Symbols■ Model Number Designation
EBG-03

Series Number

Type of Mounting

Valve SizeEB:
Proportional
Electro-Hydraulic
Relief Valve-C

Pressure Adj. Range
MPa03
G:Sub-Plate
Mounting06

C:＊-15.7★1
H:＊-24.5★110-T-51

Safety Valve

Design Number

None:
WithSafety Valve
T:Without
Safety Valve51★1. Min. adjustment pressure shall be referred to the curves on page H-103.

SeriesRelief Valves

H-99

■ Accessories● Mounting Bolts
Valve ModelNumbers

Socket Head Cap
Screw

Qty.

EBG-03

M12 × 40 L

4EBG-06

M16 × 50 L

4EBG-10

M20 × 60 L

4

● Applicable Power Amplifiers
For stable performance, it is recommended that Yuken's applicable power amplifiers be used (for details see pages H-173, H-177
and H-183).
Model Numbers : AME-D-10-＊-20 SK1022-＊-＊-11
AME-D2-1010-11 SK1015-11 (For DC power supply)
AMN-D-10 (For DC power supply)■ Sub-Plates
Valve Model
Numbers

Sub-Plate Model
NumbersBGM-03-20
BGM-03X-20
BGM-06-20
BGM-06X-20
BGM-10-20
BGM-10X-20

EBG-03
EBG-06
EBG-10Thread Size
Rc
3/8
1/2
3/4
1
1-1/4
1-1/2

Approx. Mass
kg
2.4
3.1
4.7
5.7
8.4
10.3

● ‌Sub-plates are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface shouldhave a good machined finish. ( 1.6 )● ‌Sub-plates are those for pilot operated relief valves. For dimensions, see page H-18.

■ Instructions

A flow rate of 3 L/min or higher should be used to avoid preselected pressure instability.
● Safety ValveAt shipment, the pressure of safety valves is set to the upper limits of the adjustable pressure ranges plus the extra as shown
below.
Additional Pressures for Safety Valves at Shipment
Valve Model Numbers
EBG-03

Additional Pressures at Shipment
MPa
2.0 (at 50 L/min)

EBG-06

3.5 (at 100 L/min)

EBG-104.0 (at 200 L/min)

In case where the upper limit of operating pressure is low or the upper limit of flow rate to be used is different from the specified
maximum flow, please adjust and determine the setting pressure of the safety valve at the value calculated
from the following formula.
Setting pressure = (Operating pressure upper limit) + (Additional pressure indicated below)
EBG-062100255075

Flow Rate L/min

1005432
10

EBG-10Additional Pressure MPa

3Additional Pressure MPa

Additional Pressure MPa

EBG-03050100 150 200Flow Rate L/min

65432100 100 200 300 400
Flow Rate L/min

To lower the setting pressure, turn the safety valve pressure adjustment screw anti-clockwise. After adjustment, be sure to tighten thelock nut.

H-100Series
Relief Valves

SERIES
Mounting Surface
EBG-03 : ISO 6264-06-09-1-97
EBG-06 : ISO 6264-08-13-1-97

EBG- 03
06 - -51
With Safety Valve
Fully Extended 216

Lock Nut
10 Hex.
Pressure Adj. Screw
for Safety Valve
3 Hex.Soc.

EBG- 03
06 - -T-51

INC.

Without Safety Valve"Q" Dia. Through"S" Dia. Spotface
4 PlacesACB● For other dimensions, refer to the without safety valve.

DThe direction can be alteredto every 90 degree angles.

Connector
The direction can be alteredto every 90 degree angles.

Tank Port " T"

Pressure Port " P"★This port is not used. It is provided
because of the common use of the bodywith the low-noise type pilot operated
relief valve.
On the sub-plate, plug the port whichcorresponds to this port.

Cable Departure
Cable Applicable:
Outside Dia. … 8-10 mm
Conductor Area
… Not Exceeding 0.75-1.5 mm24827.5EFHJ39E Series
Relief Valves

Manual PressureAdj. Screw
3 Hex.Soc.

130

199.5

57.5

Air Vent 3 Hex. Soc.
3 Places

KINC.

Model Numbers

N

6

Mounting Surface(O-Rings Furnished)L

6 Dia. Locating PinDimensions mmA

B

CDEF

H

JKL

N

Q

S

EBG-03

197.5

117.6

53.8

40.2

76

53.8

26.9

11.1

21.5

106

26.1

13.5

21

EBG-06

205.5

119.5

66.7

42.1

98

70

35

1426

122

36

17.5

26

Note: For valve mounting surface dimensions, see the dimensional drawings of sub-plates (page H-18) in common use.

SeriesRelief Valves

H-101

Mounting Surface:ISO 6264-10-17-1-97

EBG-10-＊-51
With Safety Valve
Fully Extended 216

Lock Nut
10 Hex.
Pressure Adj. Screw
for Safety Valve
3 Hex.Soc.

EBG-10-＊-T-51

INC.

Without Safety Valve21.5 Dia. Through32 Dia. Spotface
4 Places

211
88.9

41.3

18.7

23.7

The direction can be alteredto every 90 degree angles.

120

39

● For other dimensions, refer to the without safety valve.

82.6

101

Tank Port "T"
Pressure Port "P"

Connector
The direction can be alteredto every 90 degree angles.

★This port is not used. It is provided
because of the common use of the bodywith the low-noise type pilot operated
relief valve.
On the sub-plate, plug the port whichcorresponds to this port.

Cable Departure
Cable Applicable:
Outside Dia. … 8-10 mm
Conductor Area
… Not Exceeding 0.75-1.5 mm2

48
27.5

Manual Pressure
Adj. Screw
3 Hex.Soc.
INC.

33.5

166

235.5

57.5

Air Vent
3 Hex.Soc.
3 Places

45

6

Mounting Surface(O-Rings Furnished)

6 Dia.
Locating Pin

155

Note: For valve mounting surface dimensions, see the dimensional drawings of sub-plates (page H-18) in common use.

H-102Series
Relief Valves

SERIES■ Min. Adjustment Pressure

Viscosity : 30 mm2/s

EBG-03

EBG-062.0

1.6
1.20.80.400255075100

Flow Rate L/min

2.0
Min. Adjustment Pressure MPa

Min. Adjustment Pressure MPa

Min. Adjustment Pressure MPa

2.0

EBG-10

1.6
1.2
0.8
0.4
0050

100

150

1.6
1.2
0.8
0.4
02000100

Flow Rate L/min

200300400

Flow Rate L/min■ Step Response (Example)

These Characteristics have been obtained by measuring on each valve.
Therefore, they may vary according to a hydraulic circuit to be used.
EBG-03-C

EBG-03-H
30
25160.2s

8

Step Signal

42015105Time(Flow Rate : 100 L/min)

EBG-06-C

120.2s8

Step Signal

EBG-06-H

2015100.2s
Step Signal(Flow Rate : 200 L/min)Time(Flow Rate : 200 L/min)

EBG-10-C

EBG-10-H3016120.2s

8

Step Signal

Pressure MPa

Pressure MPa

255Time204Time30164

Step Signal(Flow Rate : 100 L/min)

Pressure MPa

Pressure MPa

200.2sE Series
Relief Valves

12

Pressure MPa

Pressure MPa

20

Trapped Oil Volume : 1 L
Viscosity: 30 mm2/s

252015105Time(Flow Rate : 400 L/min)

0.2s
Step Signal

Time(Flow Rate : 400 L/min)SeriesRelief Valves

H-103

■ Input Current vs. Pressure

Viscosity : 30 mm2/s■ Frequency Response

EBG-03

Trapped Oil Volume : 1 L
Viscosity: 30 mm2/s

EBG-0325Frequency Hz

1510EBG-03-C

500-20-40-60-80-100-120-140-160-180

0.4 0.7 10200

400600

Input Current mA

800

40Phase1000

EBG-061510EBG-06-C

50-20-40-60-80-100-120-140-160-180

0.20.4Frequency Hz0.7 1247 10-10-20-302040Gain

Phase

Gain dB

EBG-06-H

Phase deg.

Pressure MPa

20Pressure : 7.8 ± 1.6 MPa
Flow Rate : 100 L/min

20

Pressure : 7.8 ± 1.6 MPa
Flow Rate : 200 L/min
0200

400

600

Input Current mA

800

1000

EBG-10

EBG-1025

EBG-10-H

Phase deg.

1510
EBG-10-C

50-20-40-60-80-100-120-140-160

0.2Frequency Hz

0.4

0.7 1247 1020-10-20-30
Gain dB

20

Pressure MPa

7 10Gain

EBG-06

Gain
Phase-180

Pressure : 7.8 ± 1.6 MPa
Flow Rate : 400 L/min

00H-104

4-10-20-30

2502

Gain dB

EBG-03-H

Phase deg.

Pressure MPa

200.2

200

400

600

Input Current mA

8001000

SeriesRelief Valves

SERIES■ Viscosity vs. Pressure

Oil : ISO VG 46■ Flow Rate vs. Pressure

Viscosity : 30 mm2/s

EBG-03

EBG-03

EBG-03-H
24.9
24.5
24.1
EBG-03-C
15.9
15.5
15.1

Temperature 30
Viscosity 68

35

Pressure MPa

Pressure MPa

Flow Rate : 100 L/min

404445

50
3055

24.5
23.5
22.5
15.5
14.5
13.5

EBG-03-H

EBG-03-C

060 ℃
21 mm2/s25EBG-06

Pressure MPa

Pressure MPa

EBG-06-H
24.9
24.5
24.1
EBG-06-C
15.9
15.5
15.1
3540
44455030100

EBG-06

Flow Rate : 200 L/min

Temperature 30
Viscosity 68

5075
Flow Rate L/min

55

24.5
23.0
21.5
15.5
14.5
13.5

60 ℃
21 mm2/s

EBG-06-H

EBG-06-C050

EBG-10100
150
Flow Rate L/min

200

EBG-10Temperature 30
Viscosity 68

3540
4445503055

60 ℃
21 mm2/s

24.5
22.5
20.5
16.0
13.5
12.0

EBG-10-H

EBG-10-C

0100

200300Flow Rate L/min

SeriesRelief Valves

400

E SeriesRelief Valves

EBG-10-H
24.9
24.5
24.1
EBG-10-C
15.9
15.5
15.1

Pressure MPa

Pressure MPa

Flow Rate : 400 L/min

H-105

■ List of Seals and Pilot Valves
EBG-03, 06, 10

17923

191018● Pilot Valves
Valve Model Numbers

21119

22

14

7

12

654

1

15
13

821

316

⑩ Pilot Valve Model Numbers

EBG-03-C-51
EBG-03-H-51
EBG-03-C-T-51
EBG-03-H-T-51
EBG-06-C-51
EBG-06-H-51
EBG-06-C-T-51
EBG-06-H-T-51
EBG-10-C-51
EBG-10-H-51
EBG-10-C-T-51
EBG-10-H-T-51

EDG-01V-C-1-PNT09-51
EDG-01V-H-1-PNT09-51
EDG-01V-C-PNT09-51
EDG-01V-H-PNT09-51
EDG-01V-C-1-PNT10-51
EDG-01V-H-1-PNT10-51
EDG-01V-C-PNT10-51
EDG-01V-H-PNT10-51
EDG-01V-C-1-PNT11-5103
EDG-01V-H-1-PNT11-5103
EDG-01V-C-PNT11-5103
EDG-01V-H-PNT11-5103

Note: ‌For the details of pilot valves, refer to "Pilot Relief Valves"on page H-97.

● List of Seals

H-106

Item

Name of Parts

11121314
15
16

O-RingO-RingO-RingO-RingO-RingO-Ring

EBG-03
OR NBR-90 P32-N
OR NBR-90 P28-N
OR NBR-90 P9-N
OR NBR-90 P9-N
AS568-024(NBR-90)
OR NBR-90 P18-N

Part Numbers
EBG-06OR NBR-90 P32-N
OR NBR-90 P28-N
OR NBR-90 P11-N
OR NBR-90 P9-N
AS568-024(NBR-90)
OR NBR-90 P28-N

EBG-10OR NBR-90 P42-N
OR NBR-90 P28-N
OR NBR-90 P9-N
OR NBR-90 P9-N
AS568-128(NBR-90)
OR NBR-90 P32-N

SeriesRelief Valves

Qty.
111212

SERIES■ Interchangeability between Current and New Design

EBG-03/06/10 series valves have changed model from 50 to 51 design in line with the model change of pilot valve (EDG-01).

● Specifications and Characteristics
Input current-pressure characteristics differ between current and new design. Please inquire separately for details.
Other specifications remain unchanged.
● Mounting Interchangeability
There is an interchangeability in the mounting dimensions, however, the outside shape and dimensions are changed as shown
below due to pilot valve improvement and other modifications.
Current: Design 50

New: Design 51

Fully Extended A

Fully Extended A

BBCC

Manual Pressure
Adj. Screw3 Hex.Soc.

Manual Pressure
Adj. Screw
3 Hex.Soc.
Adaptor 22 Hex.

Air Vent
3 Hex. Soc.
3 Places

Air Vent
3 Hex. Soc.
Pilot Valve
EDG-01V, 50

Pilot Valve
EDG-01V, 51 Design

DesignManual Pressure
Adj. Screw
for Safety Valve
3 Hex.Soc.

See EDG-01 (page H-98) for
details of the solenoid ass'y

See EDG-01 (page H-98) for
details of the solenoid ass'yCurrent
New
Current
New
Current
New

Model Numbers
EBG-03-＊-＊-50
EBG-03-＊-＊-51
EBG-06-＊-＊-50
EBG-06-＊-＊-51
EBG-10-＊-＊-50
EBG-10-＊-＊-51

A217
216
217
216
217
216

B
118.6
117.6
120.5
119.5
102
101

C
40.2
40.2
42.1
42.1
23.6
23.6

DE

199.5

130

199.5

130

235.5

166

SeriesRelief Valves

E Series
Relief Valves

EE

DD

Manual Pressure
Adj. Screw
for Safety Valve
3 Hex.Soc.

H-107