E SERIES. Proportional Electro-Hydraulic Relief Valves. Specification. Model Number Designation. Attachment Mounting Bolts

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1 ydraulic Relief s The electro hydraulic relief valve is designed for compactness and high efficiency. The valve provides fast proportional response to the input current. For linear pressure control a special venting feature is incorporated with good stability & low hysteresis. E SERIES EIC--12- Specification Model Number EBG-3 Item Max. Operating Pres. Kgf/cm 2 21 Rated Flow L/min Adjustment Range Kgf/cm 2 Refer Model No. Designation Rated Current ma EBG-3-C :75 -C :7 EBG-3- :85 - :8 Coil Resistance Ω 1 1 ysteresis *1 Less than 3% Less than 3% (Note1) Repeatability *2 Less than 1% Frequency Response z Refer Page 561 Mass (Approx.) Kg Note : 1. Under the condition of using with YUKEN amplifier. 2. The figure is only valve under the same condition. Model Number Designation EB G -3 -C -11 Series No. EB: Prop. Electro ydraulic Relief Type of Mounting G: Sub Plate Mounting Size Pr. Adjustment Range Kgf/cm 2 *1 Design No. 3 Note C: ~ : ~ *1. For Min. Adj. Please refer Page No.561 Attachment Mounting Bolts Model No. Socket ead Cap Screw Qty. EBG-3 M12 x 7Lg. 2 M12 x 95Lg. 2 M16 x 6Lg. 2 M16 x 8Lg. 2 Power Amplifier For EBG Model No. PW1- AME-D AME-D SK Bolt Kit Ordering Code BKBG-3-1 BKBG (YIL make) Refer EIC--18 SK (For DC Power supply) AMN-D-1 (For DC Power supply) Sub-Plate Model Number EBG-3 ydraulic Relief Graphic Symbol Sub-Plate Model number. Piping BSP.F Mass Kg. BGM-3-3 3/8 2.4 BGM-3x-3 1/2 3.1 BGM-6-3 3/4 4.7 BGM-6x When ordering, please specify model number according to the above table. When not using sub-plate, please make suitable mounting surface. Sub-Plates are same as applicable to pilot operated relief valve. Ref. EIC-C ydraulic Relief

2 Note Mounting Air vent should be in the top position (Bleed position of air vent can be changed. Refer below drawing). Air Vent The valve solenoid is of oil immersed design. To give better flow rate stability, fill the oil cavity in the solenoid body by loosening the air vent. Bleed all air from the inside of the solenoid. Low s A flow rate of 6 L/min or higher should be used to avoid preselected pressure instability. Safety valve setting pressure is given additional pressure 15 Kgf/cm 2 (3 size) or 39 Kgf/cm 2. (6 size) Max. at rated flow when maximum operation pressure. Further safety valve setting pressure is determined by max. operation pressure plus additional pressure in the graph. 4 Tank Piping Do not connect to the other tank line. Connect directly to the tank and end of piping should be immersed in the oil. Additional L/min. 6 EBG- 3 6 Positions of Cable outlets can be indexed in steps of Mounting Surface O-Ring Furnished Locating Pin 6 Dia. 6 A B Manual Adjustment Screw 3 ex. Soc. Air Vent and Cable Connection can be indexed in Steps of 9 Increments when changing. Remove 4Nos. of Solenoid Mounting Bolt and Cable Outlets Suitable then set in New Positions Cable OD...8 Dia. ~ 1 Dia. Connecter Air Vent 3 ex. Socket Solenoid Mounting Bolt (4 Nos.) Socket 3 ex Vent Port Safety Adjustment Screw Nut ex Screw... 16mm Groove Indication Port 1/4 BSP.F There is no Spotface in these Installation ole For EBG-3 Port Tank Port C G E F N L D K Q J S Dia. x Thru. T Dia. Spotface 4 Places Model No. A B C D E F G J K L N Q S T EBG EBG Note : Mounting Surface Dimension is the same as BG-3, BG-6 Sub Plate for EBG BGM-3 or 3X BGM-6 or 6X 56 ydraulic Relief

3 Input Current vs EBG EBG-3- EBG-3-C EBG-3-C Input current ma Input current ma Note : Input current Error : Rating Input Current 5 ma at Rated Flow Min. Adjustment Min. Adjustment EBG-3 Viscosity : 25 cst Flow L/min. Min. Adjustment Viscosity : 25 cst L/min. Flow Frequency Response Phase Lag(deg) Gain 2 3 Phase Gain(dB) EBG-3 Frequency(z) Input Current : 43 ma ± 8 ma Loading Flow : 8 L/min. Loading Volume : 3/4 Rubber ose 1.5 m Phase Lag(deg) Gain 2 3 Gain(dB) Frequency(z) Phase Input Current : 43 ma ± 8 ma Loading Flow : 8 L/min. Loading Volume : 3/4 Rubber ose 1.5 m ydraulic Relief ydraulic Relief 561

4 Step Response Characteristic (Example) (These characteristics are measured for valve itself so it is not much different in different circuit) EBG-3-C Step signal C Step signal : 1 L/min. : 2 L/min. 3 EBG Step signal : 1 L/min Step signal : 2 L/min. Viscosity vs Characteristic EBG-3-C ISO VG32 Oil C ISO VG32 Oil Oil Temp C Viscosity cst Oil Temp C Oil Viscosity cst EBG-3- ISO VG32 Oil - ISO VG32 Oil Oil Temp C Viscosity cst Oil Temp C 2 85 Oil Viscosity cst ydraulic Relief

5 Spare Parts List List of Seals Sl. No. Name of Parts Part Number EBG-3 Quantity 1 O-Ring SO-NA-P O-Ring SO-NB-P O-Ring SO-NB-P O-Ring SO-NB-P O-Ring SO-NB-P O-Ring SO-NB-P Note: When ordering the seals, please specify the seal kit number from the table below. List of Seal Kit Model Numbers EBG-3 Seal Kit Numbers KS-EBG-3-11 KS--11 ydraulic Relief ydraulic Relief 563

6 ydraulic Relief s 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 to the input current. Note that this valve is used in conjunction with the applicable power amplifier. Specification Model Numbers Description EBG-3 EBG-1 Max. Operating Pres. Kgf/cm 2 25 Max. Flow L/min Min. Flow L/min. 3 Adj. Range Kgf/cm 2 Refer to Model Number Designation Rated Current ma C : 77 C : 75 C : 73 : 82 : 8 : 78 Coil Resistance Ω 1 ysteresis Repeatability 3% or less 1% or less Approx. Mass Kg E SERIES EIC--12A- Graphic Symbols Without Safety Model Number Designation Special Seals With Safety F- EB G -3 -C -T -51 Adj. Series Type of Range Safety Number Mounting Size Kgf/cm 2 F: Special Seals for Phosphate Ester Type Fluid (Omit if not required) EB: Proportional Electro- ydraulic Relief G: Sub-Plate Mounting 3 C: *1 16 : *1 25 *1. Min. adjustment pressure shall be referred to the curves on page no Attachment Mounting Bolts Model Numbers Socket ead Cap Screw 6 1 Bolt Kit Model Number Qty. EBG-3 M12 x 4Lg. BKEBG M16 x 5Lg. BK-51 4 EBG-1 M2 x 6Lg. BKEBG None: With Safety T: Without Safety Design Number ydraulic Relief s

7 Applicable Power Amplifiers E SERIES For stable performance, it is recommended that Yuken s applicable power amplifiers be used (for details see page no. 697, 71, 71) Model Numbers: AME-D-1-*-2 AME-D SK122-*-*-11 SK (For DC power supply) AMN-D-1 (For DC power supply) Sub-plate Model Numbers EBG-3 Sub-Plate Model Numbers Thread Size Approx. Mass Kg BGM /8 BSP.F 2.4 BGM-3X-38 1/2 BSP.F 3.1 EBG-1 BGM /4 BSP.F 4.7 BGM-6X-38 1 BSP.F 5.7 BGM /4 BSP.F 8.4 BGM-1X /2 BSP.F 1.3 Sub-plates are available. Specify the sub-plate model numbers from table above. When sub-plates are not used, the mounting surface should have a good machined finish. Sub-plates are those for pilot operated relief valves. Dimensions, see page 272. Instructions Additional Safety valve The pressure of the safety valve for EBG-3 is preset at the value equal to the upper limit of the pressure adjustment range plus 2 subject to a flow rate of 5 L/min. The same for is preset at the value equal to the upper limit of the pressure adjustment range plus 35 subject to a flow rate of 1 L/min. The same for EBG-1 is preset at the value equal to the upper limit of the pressure adjustment range plus 4 subject to a flow rate of 2 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 L/min Additional L/min 6 Additional EBG L/min To lower the setting pressure, turn the safety valve pressure adjustment screw anti-clockwise. After adjustment, be sure to tighten the lock nut. ydraulic Relief ydraulic Relief s 565

8 3 EBG- -* With Safety Fully Extended 216 Lock Nut 1 ex. Adj. Screw for Without Safety Safety valve 3 ex.soc. A INC. EBG- 3 -*-T-51 6 B 39 D C E SERIES Mounting Surface EBG-3 : ISO 6264-AR-6-2-A : ISO 6264-AS-8-2-A DIMENSIONS IN MILLIMETRES "Q" Dia. Through "S" Dia. Spotface 4 Places J *For other dimensions, refer to the without safety valve F E Connector (The direction can be altered to every 9 degree angles.) The direction can be altered to every 9 degree angles. * Tank Port "T" Port "P" * This port is not used. It is provided because of the common use of the body with the low-noise type pilot operated relief valve. On the sub-plate, plug the port which corresponds to this port. Cable Departure Cable Applicable : Outside Dia. 8-1mm Conductor Area : Not Exceeding 1.5mm² Air Vent 3 ex.soc. 3 places K 57.5 Manual Adj. Screw 3 ex.soc. INC. Mounting Surface (O- Rings furnished) 6 Dia. Locating Pin N L Model No. Dimensions mm A B C D E F J K L N Q S EBG EBG Note: For valve mounting surface dimensions, see the dimensional drawings of sub-plates (p.272) in common use. 566 ydraulic Relief s

9 EBG-1-*51 With Safety Mounting Surface: ISO 6264-AT-1-2-A Fully Extended 216 Lock Nut 1 ex. Adj. Screw for Safety valve 3 ex.soc. INC. EBG-1-*-T-51 Without Safety DIMENSIONS IN MILLIMETRES 21.5 Dia. Through 32 Dia. Spotface 4 Places *For other dimensions, refer to the without safety valve The direction can be altered to every 9 degree angles. * Tank Port "T" Port "P" * This port is not used. It is provided because of the common use of the body with the low-noise type pilot operated relief valve. On the sub-plate, plug the port which corresponds to this port. Connector (The direction can be altered to every 9 degree angles.) Cable Departure Cable Applicable : Outside Dia. 8-1mm Conductor Area : Not Exceeding 1.5mm² 57.5 Air Vent 3 ex.soc. 3 Places Manual Adj. Screw 3 ex.soc. INC. ydraulic Relief 33.5 Mounting Surface (O- Rings furnished) 6 6 Dia. Locating Pin Note: For valve mounting surface dimensions, see the dimensional drawings of sub-plates(p.272) in common use ydraulic Relief s 567

10 Min. Adjustment Viscosity : 3mm²/s EBG-3 EBG E SERIES Min. Adj Min. Adj Min. Adj L/min. 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. 2 EBG-3-C L/min. Trapped Oil Volume : 1L Viscosity : 3mm²/s EBG S Step Signal S Step Signal 4 Time ( : 1 L/min) 5 Time ( : 1 L/min) 2 -C S Step Signal S Step Signal 4 EBG-1-C 2 Time ( : 2 L/min) 5 3 Time ( : 2 L/min) EBG S Step Signal S Step Signal Time Time ( : 4 L/min) ( :4 L/min) ydraulic Relief s 5

11 Input Current vs EBG-3 EBG-3- EBG-3-C Phase (deg.) Gain(dB) Frequency Response Trapped Oil Volume : 1L Viscosity : 3 mm²/s EBG-3 Frequency (z) Gain Phase : 7.8 ± 16 : 1 L/min Input Current ma C Phase (deg.) Gain(dB) Frequency (z) Gain Phase : 7.8 ± 16 : 2 L/min Input Current ma EBG EBG-1 EBG-1-C Phase (deg.) Gain(dB) EBG-1 Frequency (z) Gain Phase : 7.8 ± 16 : 4 L/min ydraulic Relief Input Current ma ydraulic Relief s

12 Viscosity vs. Oil : ISO VG 46 Oil EBG-3 vs. Viscosity : 3 mm²/s : 1L/min EBG EBG-3-C Temperature C Viscosity mm²/s EBG-3- EBG-3-C EBG L/min : 2L/min C Temperature C Viscosity mm²/s C L/min EBG-1 : 4L/min EBG EBG-1-C Temperature C Viscosity mm²/s EBG-1- EBG-1-C EBG L/min 57 ydraulic Relief s

13 List of Seals and Pilot s List of Seals Part Numbers Sl. No. Name of Parts EBG-3 EBG-1 Quantity 1 O-Ring SO-NB-P32 SO-NB-P32 SO-NB-P O-Ring SO-NB-P O-Ring SO-NB-P9 SO-NB-P11 SO-NB-P9 1 4 O-Ring SO-NB-P9 2 5 O-Ring SO-NB-A24 SO-NB-A24 SO-NB-A O-Ring SO-NB-P18 SO-NB-P28 SO-NB-P32 2 Note: When ordering seals, please specify the seal kit number from the table below. In addition to the above O-rings, seals for pilot valve are included in the seal kit. For the details of the pilot valve seals, see page 555. List of Seal Kit Model Numbers EBG-3 EBG-1 Seal Kit Numbers KS-EBG-3-51 KS--51 KS-EBG-1-51 Pilot Model Numbers EBG-3-C-51 EBG EBG-3-C-T-51 EBG-3--T-51 -C C-T-51 --T-51 EBG-1-C-51 EBG EBG-1-C-T-51 EBG-1--T-51 Pilot Model Numbers EDG-1V-C-1-PNT9-51 EDG-1V--1-PNT9-51 EDG-1V-C-PNT9-51 EDG-1V--PNT9-51 EDG-1V-C-1-PNT1-51 EDG-1V--1-PNT1-51 EDG-1V-C-PNT1-51 EDG-1V--PNT1-51 EDG-1V-C-1-PNT11-51 EDG-1V--1-PNT11-51 EDG-1V-C-PNT11-51 EDG-1V--PNT11-51 Note: For the details of pilot valves, refer to Pilot Relief s on page 555. ydraulic Relief ydraulic Relief s 571