" " Series Variable Displacement Piston Pumps
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1 " " Series Variable Displacement Piston Pumps AR Axial Port Type AR Side Port Type "AR" series variable displacement pump has been developed which the aim of even further the quientness in operation, smaller in size and lighter in mass and based on Yuken technology and engineering which put on market the "A" series pump which has a reputation for its quiet operation and high efficiency. Pump Type Graphic Symbol Geometric Displacement cu. in./rev cm /rev Maximum Operating MPa (PSI) Page "AR" Series Variable Diplacement Piston Pumps M O AR AR ()
2 Hydraulic Fluids Hydraulic Fluids Use petroleum base oils such as anti-wear type hydraulic oils or R & O (Rust and Oxidation inhibitor) type hydraulic oils equivalent to ISO VG- or. The recommended viscosity range is from to mm /s (9 to SSU) and temperature range is from to C ( to F), both of which have to be satisfied for the use of the above hydraulic oils. Control of Contamination Due caution must be paid to maintaining control over contamination of the operating oil which can otherwise lead to breakdowns and shorten the life of the unit. Please maintain the degree of contamination within NAS Grade. The suction port must be equipped with at least a µm (5 mesh) reservoir type filter and the return line must have a line type filter of under µm. Instructions Mounting When installing the pump the filling port should be positioned upwards. Alignment of Shaft Employ a flexible coupling whenever possible, and avoid any stress from bending or thrust. Maximum permissible misalignment is less than. mm (. inches) TIR and maximum permissible misangular is less than.. Suction Permissible suction pressure at inlet port of the pump is between -.7 and +5 kpa (5 in.hg Vacuum and 7 PSIG). For piping to the suction port, use the pipes of the same diametre as that of the specified pipe flange to be used. Make sure that the height of the pump suction port is within one metre (. ft) from the oil level in the reservoir. Hints on Piping When using steel pipes for the suction or discharge ports, excessive load from the piping to the pump generates excessive noise. Whenever there is fear of excessive load, please use rubber hoses. Drain Piping Install drain piping according to the chart and ensure that pressure within the pump housing should be maintained at a normal pressure of less than. MPa (.5 PSI) and surge pressure of less than.5 MPa (7.5 PSI). Length of piping should be less than m (. ft.), and the pipe end should be submerged in oil. In case AR and AR pump, a screw-in torque of fitting is to 5 Nm (5 to IN.bs.). Do not apply bending and thrust torque to the fitting. Model AR, AR [Recommended Drain Piping Size] Japnese Std. "JIS" & European Design Std. / Fitting Size N.American Design Std. SAE # [Inside Dia..5 mm (. in.) or more] Inside Dia. of Pipe mm (.9 in.) Bleeding Air It may be necessary to bleed air from pump case and outlet line to remove causes of vibration. An air bleed valve (Model Number ST-* - *, Page ) is recommended for this purpose. Suction Piping In case the pump is installed above the oil level, the suction piping and suction line filter should be located lower than the pump position to prevent air in the suction line. 7-9-
3 A"AR" Series PISTON PUMPS Starting Before first starting, fill pump case with clean operating oil via the filling port. In order to avoid air blockage when first starting, adjust the control valves so that the discharged oil from the pump is returned direct to the reservoir or the actuator moves in a free load. [Volume of Pre-fill Oil Required] Model AR AR Volume cm (in. ) (.) Setting Discharge and Delivery At the time of shipment, the unit has been preset to maximum delivery and minimum discharge pressure. Adjust the preset delivery and pressure to meet your system requirements. Adjustment of Discharge Turning the adjustment screw clockwise, increases pressure. Volume adjusted by each full turn of the pressure adjustment screw Model Numbers AR/AR-FRB AR/AR-FRC Adjustment Volume MPa (PSI).9 () 5. (7) Adjustment of Delivery Turning the delivery adjustment screw clockwise, decreases delivery. The minimum adjustable flow and adjustable volume of each full turn of the delivery adjustment screw Model Numbers AR AR Adjustable volume with each full turn of the adjustment screw cm /rev (cu.in./rev).5 (.9). (.) Minimum adjustable flow cm /rev (cu.in./rev) (.).5 (.59)
4 Compensator Valve Adj. Screw Spool Control Piston Drain Port Flow Adj. Screw Pivot Journal Bearing OUT IN Shaft Port Plate Cylinder Block Spring Piston Ass'y Yoke Slipper Retainer Features Smaller in Size and Lighter in Mass As indicated in the dimensional comparison presented below, the AR is smaller than the A ( design). Also, the mass of AR is substantially lighter than the A. Low Noise The noise level of AR has been reduced by - db (A) at full flow and full cut-off compared with that of the excellent A quiet pump. [Comparison of "AR" with "A"] A, Design AR, Design.5(.7) (7.) 9(7.) 7(7.) DIMENSIONS IN MILLIMETRES (INCHES) (9.5) (5.) Model AR A Approx. Mass (Flange Mtg.) 9. kg (. lbs.).5 kg (. lbs.) Ratio of Mass (AR/A) % 7-9-
5 A"AR" Series PISTON PUMPS Single Pump, Compensator Type Graphic Symbol M O Specifications Model Numbers AR-FR * -//95 AR-FR * -//95 5. Geometric Displacement cm /rev (cu.in./rev) (.9). (.55) Operating MPa (PSI) Shaft Speed Range r/min. Rated Intermittent Max. Min. () When setting the pressure, make sure the full cut-off pressure never exceeds the maximum intermittent pressure. Model Number Designation AR -F R B S - Series Number Mounting Direction of Rotation Control Type Pres. Adj. Range MPa (PSI) Port Position Design Number Approx. Mass kg (lbs.) 9. (.) * Design Std. AR (5. cm /rev) AR (. cm /rev) F: Flange Mtg. Viewed from Shaft End R: Clockwise (Normal) : Compensator Type B:. - 7 {7 - } C:. - {9 - } None: Axial Port S: Side Port Refer to. Available to supply pump with anti-clockwise rotation. Consult Yuken for details. Pipe Flange Kits Pipe flange kits are available. When ordering, specify the kit number from the table below.. Design Standards: None... Japanese Standard "JIS"... European Design Standard N. American Design Standard Pump Model Numbers AR-FR AR-FR Name of Port Suction Discharge Japanese Standard "JIS" Threaded Connection European Design Standard Pipe Flange Kit Numbers N. American Design Standard Socket Welding Japanese Standard "JIS" European Design Standard N. American Design Standard F5--A- F5--A- F5--A-95 F5--B- F5--B-9 Discharge port is available only for the threaded connections. Detail of the pipe flange kits are shown on page. Mounting Bracket Kits Mounting bracket available on separate order. Refer to page for dimennsions of the Mtg. bracket. Pump Model Numbers Mtg. Bracket Kit Numbers Approx. Mass kg (lbs.) AR/AR-FR LP-A-. (.9) Note: The mounting bracket kit consists of a mounting bracket, two hex. bolts and two plain washers. Single Pump, Compensator Type
6 Typical Pump Characteristics of Type "AR" at Viscosity mm /s ( SSU) [ISO VG Oils, 5 C ( F)] Performance Characteristic Curve Efficiency % N=5 r/min Volumetric Efficiency Overall Efficiency L/min U.S.GPM kw MPa Efficiency % N= r/min Volumetric Efficiency Overall Efficiency L/min U.S.GPM kw MPa 5 5 PSI 5 5 PSI Full Cut-off Power kw N=5 r/min kw N= r/min P=MPa(PSI) P= () P= (7) P= (5) P= () P= (7) P= (5) P= (9) P=.7 () L/min L/min kw U.S.GPM Full Cut-off Power r/min 5 r/min MPa in. /min L/min. Drain Drain.5..5 P=MPa(PSI) P= () P= (7) P= (5) P= () P= (7) P= (5) P= (9) P=.7 () 5 7 U.S.GPM Full Cut-off N= r/min N=5 r/min Full Flow MPa 5, r/min 5 5 PSI Full Cut-off 5 5 PSI Noise Level [One metre (. ft.) horizontally away from pump head cover] db(a) N=5 r/min db(a) N= r/min Noise Level 7 5 Full Flow Full Cut-off MPa Noise Level 7 5 Full Cut-off Full Flow MPa 5 5 PSI 5 5 PSI Single Pump, Compensator Type 7-9-
7 A"AR" Series PISTON PUMPS Typical Pump Characteristics of Type "AR" at Viscosity mm /s ( SSU) [ISO VG Oils, 5 C ( F)] Performance Characteristic Curve % N=5 r/min Volumetric Efficiency L/min Overall Efficiency U.S.GPM kw MPa Efficiency % N= r/min Volumetric Efficiency L/min U.S.GPM kw Overall Efficiency MPa Efficiency 5 5 PSI 5 L/min 5 5 PSI kw N=5 r/min kw N= r/min P=MPa(PSI) P=MPa(PSI) P= () P= () P= (7) P= (7) P= (5) P= (5) P= () P= (7) P= (5) P= (9) P= (5) P= () P= (7) P= (5) P= (9) P= (5) 5 L/min Full Cut-off Power kw.5..5 U.S.GPM Full Cut-off Power r/min 5 r/min MPa in. /min L/min. Drain Drain.5..5 U.S.GPM Full Cut-off 5 r/min r/min Full Flow MPa 5, r/min 5 5 PSI Full Cut-off Noise Level [One metre (. ft.) horizontally away from pump head cover] db(a) 5 5 PSI N=5 r/min db(a) N= r/min Noise Level 7 Full Flow Noise Level 7 Full Flow 5 Full Cut-off MPa 5 Full Cut-off MPa 5 5 PSI 5 5 PSI Single Pump, Compensator Type 7-9-
8 Response Characteristics Change in Accordance with Circuits and Operating Conditions. Test Circuit and Conditions Circuit SOL Hydraulic High Hose /" m (. ft.) M O Conditions Drive Speed : 5 r/min Hydraulic Fluid : ISO VG oil Oil Temperature : 5 C ( F) Viscosity : mm /s ( SSU) Result of Measurement t t Ps P MPa (9 PSI) MPa (9 PSI) Time SOL OFF ON OFF Full Cut-off Model P MPa (PSI) AR () AR Response Time Overshoot Overshoot ms Ps t t t MPa (PSI) 5 5. ( ) () Single Pump, Compensator Type 7-9-
9 A"AR" Series PISTON PUMPS AR-FR* -//95 AR-FR* -//95 Axial Port Type "E" Thd. 7(.7) Deep Places Suction Port 9(.75) Dia. 7. (.7) Gauge Connection "F" Thd Lock Nut (.5) Hex. Flow Adj. Screw (.5) Hex. DEC.. (.7).5.5 (.) (.) (.7) 5 (.97) (7.7) (.75).5 (.) (.) 5 7 (5.79) 7 (.77) Discharge Port "C" Thd. Filling Port [(.7) Hex. Head Plug Furnished] (.9) (.9) Drain Port "D" Thd. 9.5(.75) 9.(.7) Dia..(.).(.).55(.5).5(.) Dia. 77 (.) 5.5(.5).5 (.9).79(.).7(.7) (.7) (.7) (5.) (.) Lock Nut (.5) Hex. Adj. Screw (.5) Hex. 9 (.7) (.9) 7 (.99) 95(.7) Dia. INC. Install the pump so that the "Filling port" is at the top. Model Numbers "C" Thd. "D" Thd. "E" Thd. "F" Thd. AR/AR-FR * - AR/AR-FR * - AR/AR-FR* -95 Rc / / BSP.F SAE # Rc / / BSP.F SAE # M /- UNC Rc / / BSP.Tr SAE # AR-FR* S-//95 AR-FR* S-//95 Side Port Type DIMENSIONS IN MILLIMETRES (INCHES) "E" Thd. 7 (.7) Deep Places Drain Port "D" Thd. 7. (.7). (.7) Suction Port 9 (.75) Dia. 7 (.9) 7 (.9) Discharge Port "C" Thd. 5 (.) Model Numbers "C" Thd. "D" Thd. "E" Thd. AR/AR-FR * S- AR/AR-FR * S- Rc / / BSP.F Rc / / BSP.F M AR/AR-FR * S-95 SAE # SAE # /- UNC For other dimensions, refer to "Axial Port Type". Single Pump, Compensator Type 7-9-
10 Pipe Flange Kit for Suction Port Threaded Connection (.) Dia. Through Places Japanese Std. "JIS": F5--A- (.9). (.7) Rc / Thd. (.) SO-NB-G (.) 7. (.7) Soc. Hd. Cap Screw ( Pcs.) M 5 Lg. Approx. Mass....5 kg (. lbs.) 5 (.59) European Design Std.: F5--A- N. American Design Std.: F5--A-95 (.) Dia. Through 7.5(.9) C' bore Places (.9). (.7)..5 (..) (.) (.79) / BSP. F Thd. SO-NB-G..5 (..) (.) 9 (.75) SAE # SO-NB-G 7(.7) 7. (.7) Socket Welding F5--B-/9 (.) Dia. Through Places (.9). (.7) (.) 5 (.59). (.). (.5) Soc. Hd. Cap Screw ( Pcs.) M 5 Lg. SO-NB-G.5 (.5) Approx. Mass....5 kg (. lbs.) 5. (.) Soc. Hd. Cap Screw ( Pcs.) /-UNC -/ Lg. (.) 7. (.7) 7.7 Dia. (.9) Soc. Hd. Cap Screw ( Pcs.) C Kit Numbers F5--B- C mm (In.) 5 (.59) F5--B-9.75 (.) Soc. Hd. Cap Screw M 5Lg. /- UNC -/ Lg. Remarks Japanese Std. "JIS" European Design Std. N. American Design Std. Approx. Mass.... kg (. lbs.) Mtg. Bracket Kit: LP-A- Mtg. Bracket 7 (.7) (.7) Dia. Through (.9) Dia. Spotface Places DIMENSIONS IN MILLIMETRES (INCHES) Hex. Bolt ( Pcs.) M 5 Lg. Plain Washer ( Pcs.) 5 (.99) 95 (.7) 5.5 (.) 7.5 (.) (.) 95 (.7) (.5) (.5) (7.9) (.55) 5 (.59) (.5) 5.5 (5.7) Single Pump, Compensator Type 7-9-
11 A"AR" Series PISTON PUMPS Spare Parts List AR-FR* -//95 AR-FR* -// Z Z Design "95" Only List of Seals & Bearings Section Z-Z Part Numbers Item Name of Parts AR-FR AR-FR Qty. 5 7 Gasket Bearing -PK Bearing HMK 75 V Z--PK- 5 Oil Seal TCN 55 SO-NB-P9 SO-NA-P SO-NB-P SO-NA-A SO-NB-P 7 SO-NB-A95 When ordering seals, please specify the seal kit number from the table below. List of Seal Kits Pump Model Numbers AR-FR * -//95 AR-FR * -//95 Seal Kit Number KS-AR-- Single Pump, Compensator Type
12 Interchangeability in Installation between "A" Series and "AR" Series Specifications Description Operating Pres. Model Geometric Displacement Rated Intermittent Shaft Speed Range Approx. Mass (Flange Mtg.) A- * -R-- * -K- * 5. cm /rev (.9 cu.in./rev) MPa ( PSI) MPa (5 PSI) MPa ( PSI) - r/min.5 kg (. lbs.) 9. kg (. lbs.) AR-FR * - * A- * -R-- * -K- * AR-FR * - *. cm /rev (.55 cu.in./rev) MPa ( PSI) MPa ( PSI) - r/min.5 kg (. lbs.) 9. kg (. lbs.) Interchangeability in Installation "A" Series A- * -R-- * -K- * A- * -R-- * -K- * Model Numbers "AR" Series AR-FR * - * AR-FR * - * Comparison of dimensions between "A" series and "AR" series are shown below. Interchangeability in Installation Mtg. Flange & Piping Shaft End Suction Port Discharge Port Drain Port Yes Yes No No A/A-F-R--* -K Note: Dimensions with star mark are identical to each other Filling Port Flow Adj. Screw Adj. Screw.5 Drain Port "D" Thd φ φ Suction Port 9 Dia.. 5 "E" Thd. 7 Deep Places Discharge Port 9 Dia. 7 φ95 R Model Numbers "C" Thd. "D" Thd. "E" Thd. "F" Thd. A/A-F-R-- * -K- A/A-F-R-- * -K- Rc / / BSP.F M A/A-F-R-- * -K-95 SAE # /- UNC AR/-FR * - AR/-FR * - Rc / / BSP.F Rc / / BSP.F M Rc / / BSP.Tr AR/-FR * -95 SAE # SAE # /- UNC SAE # AR/AR-FR "E" Thd. 7 Deep Places 7. Suction Port 9 Dia...5 Flow Adj. Screw Gauge Connection "F" Thd Discharge Port "C" Thd. Filling Port.5 Drain Port "D" Thd..5 5 φ φ Adj. Screw Single Pump, Compensator Type 7-9-
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