Single Pump, "OBE" Type Electro-Hydraulic Proportional & Flow Type Input Signal for Safety valve Input Signal for Flow Amplifier Proportional Solenoid Sensor Valve Piston (S Input Voltage L) Performance Characteristics (S Input Voltage L). Unloading pressure when input signal is V.. Safety valve setting pressure Tilt Angle Sensor Bias Piston A6/A/A7/A6 Graphic Symbols A7/A9/A4 Example of Specified Symbol (E.) 7 4 7 7M 6M M at Input Signal is V kgf/cm MPa PSI 7 6.9. 4.7 7 7..6 7.4 7 6. 6 4. 4 Model Number Designation A6 -F R 4EH 7 R S -6-4 Series Number Mounting Direction of Rotation Type at Input Signal is V Amplifier Direction Port Position Compensation Number Design Number * Design Std. A6 (.8 cm A (. cm A7 (6.9 cm A6 (6. cm A7 (7. cm A9 (9. cm A4 (4. cm F: Flange Mtg. L: Foot Mtg. Viewed from Shaft End R: Clockwise (Normal) 4EH: "OBE" Type Proportional & Flow Type Specify between 6.9 MPa and Maximum Operating (Refer to above Table) Viewd from Shaft End R: Right L: Left None: Axial Port S: Side Port S: Side Port. Available to supply pump with anti-clockwise rotation. Consult Yuken for details.. Amplifier Compensation Number may differ according to the main machine conditions. Consult Yuken for detail.. Design Standards: None...Japanese Standard "JIS" 9...N.American Design Standard 6 6 6 6 4 4 4 4 6 6 6 Refer to 86
A"A" Series PISTON PUMPS Specifications Descriptions Geometric Displacement Model Numbers A6 A A7 A6 A7 A9 A4 cm /rev (cu. in..8 (.964). (.) 6.9 (.) 6. (.4) 7. (4.7) 9. (.) 4. (8.8) Operating MPa (PSI) Rated Intermittent 6 () () 6 () 6 () 6 () () 6 () () (6) 8 (46) (6) 8 (46) (6) 8 (46) Shaft Speed Range r/min 6-8 Max. Flow L/min (U.S. GPM) 8.4 (7.) 4. (.6) 66.4 (7.). (6.7) 6. (.) 6. (4.) 6. (69.) Flow Coil Resistance Input Impedance Supply Electric Power Power Input (Max.) Flow Output Signal Alarm Signal Output (Open Collector) Ambient Temperature C ( F) Mass Min. Pres. Required for Flow Adj. Hysteresis Repeatability Input Signal Min. Adjustment Hysteresis Repeatability Input Signal kg (lbs.) MPa (PSI) MPa (PSI) Ω [@ C (68 F)] Flange Mtg. Foot Mtg. W.7 (4.6).9 (.).7 (4.6).9 (.). (9) % or less % or less Max. Flow / V DC.7 () % or less % or less Specified / V DC Flow : kω. Whenever setting pressure, make sure the full cut-off pressure never exceeds the maximum intermittent pressure.. When operating the pump exceeding the rated pressure, operating conditions are restricted. Refer to page for the details.. Maximum flow differs to shaft speed. The value listed above indicates shaft speed of 8 r/min. For other shaft speed calculate by the ratio of shaft speed. Pres. : kω 4 V DC ( - 8 V Included Ripple) V DC / Max. Flow V DC / Specified Voltage : Max. V DC Current : Max. 4 ma - ( - ) (With Circulated Air). (7) 6. (8.) 9. (86.4) 4. (9.9) 64 (4) 76 (68) 76. (69) 97 (4) 98 (6) (7) Pipe Flange Kits For Pipe flange, refer to form of pressure compensator type on page 4. Instructions Input Signal The pump is on unload condition when the pump is operated without input signal voltage. Electric Source Always turn off electric source whenever the connector for swash plate tilt angle sensor is removed. Compensation of Pump Maximum Regulated Flow at Frequency If the same maximum flow is required at Hz or 6 Hz, connect short plug in the amplifier to 6 Hz at the place where supplied frequency is 6 Hz. At this condition, maximum flow comes to the same value at Hz. If short plug is used at 6 Hz without making the change, maximum flow increased in proportion to frequency. Painting on Amp. Box and Solenoiod To maintain suitable radiation effect, the amp. box and the solenoid of the control valve should not be painted. 87
vs. Input Signal A6 U.S.GPM 8 A A7 6 4 L / min 4 4 4 Note: Pump characteristics at 8 r/min is the same as those at r/min where frequency is compensated. (Refer to page 87.) Full Cut-off Pres. vs. Input Signal A6 U.S.GPM L / min 8 4 A7 U.S.GPM L / min U.S.GPM L / min 4 4 4 8 r/min r/min 8 6 4 U.S.GPM 6 8 4 4 6 8 L / min 8 6 4 8 r/min r/min 8 r/min r/min 4 A9 U.S.GPM L / min 4 7 4 4 A4 U.S.GPM L / min 8 7 8 r/min 4 6 r/min 4 6 8 4 4 6 4 7 7 8 r/min r/min 8 r/min r/min 8 r/min r/min Full Cut-off PSI 4 MPa 8 A* - * R4EH7.M A* - * R4EH4.M 4 A* A* - * R4EH.6M - * R4EH.7M A* - * R4EH6.9M Full Cut-off kgf/cm (PSI) 8 (4) () 4 () 7 () 4 A* - * R4EH8 A* - * R4EH A* - * R4EH4 A* - * R4EH7 Refer to page 7 to 4 for performance characteristics of pressure compensator type excluding characteristics appeared on this catalogue. 88
A"A" Series PISTON PUMPS Flange Mtg.: A6-FR4EH* - * -4/49 A-FR4EH* - * -4/49 Axial Port Type See. (.9) 44 (.67) Air Vent (.) Hex. Soc. G / Thd. 9 (9.4) (8.7) 9 (.) (.98) [(.87) Hex. Head Plug Furnished] 44. (.7) 6. (.6) (.98) "C" Thd. 9(.7) Dia.. (9.9) 7. (6.8) 47.6 (.874) 8. (.4).4(.86).8(.8) 96 (.78) 9(.7) Dia. 44 (.67). (.874) 6 (.6) 94 (.7) "D" Thd. 7(.67) Deep 8 Places (.47) 7 (6.77) 9.(.7) 9.(.7488) Dia. 8.(.) 8.(.48) Dia. 4.79(.886) 4.76(.874). Install the pump so that the "" is at the top.. Do not touch the screw because it is adjusted at the time of shipment.. For detail of amplifier, refer to page 9. Model Numbers "C" Thd. "D" Thd. Rc /8 M SAE #8 /8-6 UNC A6/A-FR4EH* - * -4 A6/A-FR4EH* - * -49 (.4) 9(.74) Dia. 6 (4.7) (.) View Arrow R (R.47) 8 (.7) Side Port Type Port mounting dimensions are the same as those of pressure compensator model. Refer to page 4 for port mounting dimensions. Refer to page 4 for the dimensions of mounting bracket. 89
Flange Mtg.: A7-FR4EH* - * -4/49 Axial Port Type [(.87) Hex. Head Plug Furnished] See. (6.) 46 (.7) Air Vent (.) Hex. Soc. G / Thd. 6. (.) 4. (9.9) 77 (.) (.8) 9 (.) 9. (.7) "C" Thd. (.6) (.6) Dia. 8.7 (.) 67. (.) 77. (6.99) 4. (.6) (4.) (.6) Dia. 48. (.8). (.89) 7 (.8) (.98) "D" Thd. "E" Deep 8 Places (.47) 9 (7.68).(.87).(.874) Dia..(.98) 4.8(.978).6(4.).(.998) Dia. 6.8(.) 6.(.). Install the pump so that the "" is at the top.. Do not touch the screw because it is adjusted at the time of shipment.. For detail of amplifier, refer to page 9. Model Numbers "C" Thd. "D" Thd. A7-FR4EH* - * -4 A7-FR4EH* - * -49 Rc / SAE # "E" mm (IN.) M 9 (.7) 7/6-4 UNC (.79) 4 (.) (4.7) Dia. 46 (.7) 74 (6.8) View Arrow R4 (R.) (.98) Side Port Type Port mounting dimensions are the same as those of pressure compensator model. Refer to page 46 for port mounting dimensions. Refer to page 46 for the dimensions of mounting bracket. 9
A"A" Series PISTON PUMPS Axial Port Type Flange Mtg.: A6-FR4EH* - * -4/49 [(.87) Hex. Head Plug Furnished]. (6.) 46 (.7) Air Vent (.) Hex. Soc. G / Thd. 74 (.79) 6 (.8). (.99) 4. (.7) 6 (.44) 9. (.7) "C" Thd. (Both Sides) See (.6) Dia.. (.8). (7.97) 8.7 (.) 67. (6.9) 4 (.7) 9 (.4) (.8) Dia. 6 (6.4). (.89) 76 (.99) 6 (4.7) "D" Thd. "E" Deep 8 Places 7 (8.) (.47).7(.).7(.48) Dia..(.9).4(.8).6(4.).(.998) Dia. 4 (.6) 49 (.9). Install the pump so that the "" is at the top.. Use either port of two drain ports at your option. Keep the remaining port plugged.. Do not touch the screw because it is adjusted at the time of shipment. 4. For detail of amplifier, refer to page 9. 7.97(.8) 7.94(.6) 4 (.) (.98) Model Numbers "C" Thd. "D" Thd. A6-FR4EH* - * -4 A6-FR4EH* - * -49 Rc /4 SAE # M 7/6-4 UNC "E" mm (IN.) 9 (.7) (.79) (4.7) Dia. 46 (.7) 74 (6.8) R4 (R.) View Arrow Side Port Type Port mounting dimensions are the same as those of pressure compensator model. Refer to page 47 for port mounting dimensions. Refer to page 47 for the dimensions of mounting bracket. 9
Flange Mtg. Amplifier Direction "L" : A7-FR4EH* L_S- * -6/69 4 (.6) "C" Thd. (Both Sides) 6 (.6) 6 (.44) 9. (.77) 9. (.7) Air Vent (.) Hex. Soc. G / Thd. 7. (4.) 9 (.74) 89. (.) 7 (.87) (6.) 9 (.74) 7 (.87) Plug (.79) Hex. Soc..4 (.6) 4 (.7) 9 (.4) 79. (7.7) 4 (.) 7.97(.8) 7.94(.6) 4.4 (4.4) 8 (7.9). (8.4) 6(.) Dia. "E" Thd. 7(.67) Deep 6. 6 (.) (.6) 8 (.7) 46. (9.7) 6. (.7).7(.).7(.48) Dia..(.9).4(.8) 7.(.) 6.9(4.998) Dia. 8 (.7) (.8) Dia. Spotface (From Rear) Places 4.4 (4.4) 4 (.8) 8 (7.6) (8.) 8 (4.6) 7(.6) Dia. Spotface (From Rear) Amplifier Direction "R" : A7-FR4EH* R_S- * -6/69 Eye Bolt (M) [(.87) Hex. Head Plug Furnished] 7. (4.6) 69.9 (.7) 8(.) Dia. Case (.) Hex. Soc..7 (.46) 46. (9.7) "D" Thd. "F" Deep View Arrow. Install the pump so that the "" is at the top.. Use either port of two drain ports at your option. Keep the remaining port plugged.. Do not touch the screw because it is adjusted at the time of shipment. 4. For detail of amplifier, refer to page 9.. If you use the special sequence valve, remove the plug. Model Numbers "C" Thd. "D" Thd. "E" Thd. A7-FR4EH** S- * -6 A7-FR4EH** S- * -69 Rc /4 SAE # M /- UNC M /8-6 UNC Dimensions mm (IN.) F 9 (.7) (.8) Refer to page 48 for the dimensions of mounting bracket. 9
A"A" Series PISTON PUMPS Flange Mtg. Amplifier Direction "L" : A9-FR4EH* L_S- * -6/69 "C" Thd. (Both Sides).7 (4.87) 9. (4.7) (.) 9 (.74) (.9) 6 (.48) G / Thd. 7 (4.) (6.) 89. (.) Air Vent (.) Hex. Soc. 68 68 (.68) (.68) Plug (.79) Hex. Soc. 8.7 (.) (4.4) 9.6(.764) 9.(.7) 89 (7.44) (8.78) 6.6 (6.6) (.6) Dia. "E" Thd. "F" Deep. (.89) (.87) (.9) 7 (.6) 4 (.76) 8.(.) 8.(.498) Dia. 4.6(.668) 4.8(.66).4(6.).(.998) Dia..(.8) Dia. Through 9(.4) Dia. Spotface (From Rear) R 6.6 (R.87) (6.6) (4.) (4.) 7 (.) Amplifier Direction "R" : A9-FR4EH* R_S- * -6/69 [7(.6) Hex. Head Plug Furnished] Eye Bolt (M) 77.8 (.6) 48(.89) Dia. 4.9 (.689) 7 (.6) "D" Thd. "F" Deep View Arrow. Install the pump so that the "" is at the top.. Use either port of two drain ports at your option. Keep the remaining port plugged.. Do not touch the screw because it is adjusted at the time of shipment. 4. For detail of amplifier, refer to page 9.. If you use the special sequence valve, remove the plug. Model Numbers "C" Thd. "D" Thd. "E" Thd. A9-FR4EH** S- * -6 A9-FR4EH** S- * -69 Rc /4 SAE # M /- UNC M 7/6-4 UNC Dimensions mm (IN.) F 9 (.7) (.8) Refer to page 49 for the dimensions of mounting bracket. 9
Flange Mtg. Amplifier Direction "L" : A4-FR4EH* L_S- * -6/69 "C" Thd. (Both Sides) 49. (.89) 89 (.) (.) (4.4) (.9) 7 (.76) G / Thd. 7. 78. (4.) (7.) 89. (.) 7 7 Air Vent (.) Hex. Soc. (.8) (.8) Plug (.79) Hex. Soc. 8.7 (.) (4.).4(.486).(.474) 8.6 (9.) 9 (7.) (8.86) (.6) Dia. "E" Thd. "H" Deep. 4 (.89) (.94) 6 (.) 99. (.79) 7. (4.7) 44.4(.7) 44.4(.748) Dia. 49.9(.944) 49.(.97).4(6.).(.998) Dia. R (R.87) (4.4) 8.6 (9.) 7 (.7) (4.4) 4 (.).(.8) Dia. Through 9(.4) Dia. Spotface (From Rear) Amplifier Direction "R" : A4-FR4EH* R_S- * -6/69 [7(.6) Hex. Head Plug Furnished] Eye Bolt (M) 77.8 (.6) 48(.89) Dia. Case (.) Hex. Soc. 4.9 (.689) 99. (.79) "D" Thd. "F" Deep View Arrow. Install the pump so that the "" is at the top.. Use either port of two drain ports at your option. Keep the remaining port plugged.. Do not touch the screw because it is adjusted at the time of shipment. 4. For detail of amplifier, refer to page 9.. If you use the special sequence valve, remove the plug. Model Numbers "C" Thd. "D" Thd. "E" Thd. A4-FR4EH** S- * -6 A4-FR4EH** S- * -69 Rc /4 SAE # M /- UNC M 7/6-4 UNC Dimensions mm (IN.) F H 9 (.7) 9 (.7) (.8) (.79) Refer to page for the dimensions of mounting bracket. 94
A"A" Series PISTON PUMPS Detail of Amplifier Connecting Terminal LED for Power Supply /6 Hz Short Plug P GAIN CMG FMG LQC DITHER FUSE 6Hz Hz Compensation Cartridge 4 V V ALM C ALM S SMQ SMP Q IN C P IN C H SPARE FUSE Connector for Tilt Angle Sensor Terminal P IN C Q IN SMP SMQ V 4 V ALM S ALM C CH Name Input Signal, (+) Input Signal (COM) Input Signal, Flow (+) Sensor Monitor Output, Sensor Monitor Output, Tilt Angle Power Supply Alarm Output Alarm Output (COM) Output Current Check (to COM) Note. For "SENSOR MONITOR" terminal, external instruments should have input impedance of more than kω.. For "CH" terminal, external instruments should have input impedance of more than kω.. Volume adjustment of "DITHER", "GAIN", "CMG", "FMG" and "LQC" is made at the time of shipment. Adjustment at the customer is not required. 4. Use shielded cable for "Input" connection. The ground of the shielded cable must be connected to input signal side. Circuit Schematic ALARM SIG COM P SENSOR MONITOR PRESS. SENSOR P IN A C P GAIN ALARM LQC Q IN D A CMG OSC CH DITHER POSITION SENSOR FMG 4 V V Q SENSOR MONITOR 9