Screw size x depth■ General DescriptionThis pump was developed to meet the ever increasing demands for vehicle by our company. Total 4 series and 33 sizes are available, displacement range from 7 to 237 ml/r, maximum operating pressure 21 MPa and speed from 600 to 2200 rpm; intra-vane design enables the pump having high pressure, large capacity, compact size, low sound level and longer service life features; its main technical data have reached to the advanced level of the same product in the world.This series pump adopts replaceable pumping cartridge containing all parts that wear none contact the body. Field service can be accomplished without removing the pump from its mounting, eliminating the need for factory repairing which reduces expensive downtime; with hydraulic balance, bearing loads resulting from pressure are eliminated and the only radial loads are those imposed by the drive itself. Longer life and minimum maintenance are direct results; Wear compensation is inherent in the design. Intra-vane design which enables that continuously applied outlet pressure between vane and intra-vane reduces tip loading to the extent desired on a particular pump. Outward balanced thrust of vane inlet port area is equal to outlet pressure times projected area of end of intra-vane.This thrust can be controlled without sacrificing vane thickness. To resist the cantilever loads of any practical outlet pressure, vane thickness can be increased without increasing load between vane and cam ring. The dual vane arrangement assures solid tracking of the cam ring throughout the pumping cycle. This means less leakage across vane tips which enhances volumetric efficiency, low noise and less cam ring wear. Wear resistant flexible side plates are available in the design, thus further increasing the speed and service life.Installation meet ISO/SAE standards; with complete specifications, reliable performance, reasonable construction and convenient installation and easy maintenance, it is widely used in hydraulic systems for vehicles and other machineries.■ VQ Series Single Pump▲ Model Code 1. F3—Viton Seals Omit if not required2. 20VQ—Series 20VQ—7~45.9ml/r 25VQ—32~67.5ml/r 35VQ—67.9~121.6ml/r 45VQ—138.7~237ml/r3. 5—Displacement codeSeriesDisplacement code20VQ2 3 4 5 6 7 8 9 10 11 12 1425VQ10 12 14 15 17 19 2135VQ21 25 30 32 35 3845VQ42 47 50 57 60 66 754. A—SAE4 bolt flange M—Metric thread I—Inch thread5. F—Mounting and shaft seal assembly S—Flange mount and doubles haft seal Omit for flange mounting with single shaft seal F—Foot mounting6. 11—Shaft type 1—1Straight keyed(Standard) 86—86 Straight keyed（Heavy duty.Not available on 20VQ） 151—151（20VQ） Splined(For 20VQ only) 11—11 Splined（Not available on 20VQ）7. C—Outlet positions (Viewed from cover end of pump) A—Opposite inlet port B—90°CCW from inlet C—Inline with inlet D—90°CW from inlet8. L—Rotation (Viewed from shaft end of pump) L—Left hand for counter-clockwise R—Right hand for clockwise,omit9.10—Design number▲ Technical DateSeriesCodeGeometric displacementMin.Speed (rpm)Using antiwear hydraulic oil or phosphate ester fluidUsing water glycol fluidUsing water-oil emulsionsml/rin3/rMax.Speed (rpm)Max.operating pressure (MPa)Max.Speed (rpm)Max.operating pressure (MPa)Max.Speed (rpm)Max.operating pressure (MPa)20VQ270.436002700211500161800143100.614130.795181.106191.167221.34827.41.67929.21.781031.51.921136.42.221239.52.41161445.92.80141425VQ10321.9560027002115001500141240.22.451445.42.7715472.8725001755.23.371960.73.702167.54.1235VQ2167.94.146002200211200161500142581.64.983097.75.96321016.1635112.86.8838121.67.4245VQ42138.78.46600220017.512001615001447148.39.0550162.39.9057179.810.9760193.411.806621012.817523714.4614▲ Configuration and Installation Dimension(mm)★20VQNote:Port flange kits are suitable for connecting ports with four-bolt flange SAE.Each kit includes one flange,four fixing bolts and one "O"ring,which should be separately ordered.★25VQ ★35VQ ★45VQModelABØCDEØGHJLMØN25VQ35.726.225.452.412.738.111869.912138.1101.60 101.6535VQ42.930.231.858.71650.814077.8125.538.1127.00 126.9545VQ61.935.738.169.91676.2159106.415343127.00 126.95 PQRSTØVWØXØF×thread depth,4holesØK×thread depth,4holes9.53162.163.576.214614.21751213/8"-16UNC-2B×191/2"-13UNC-2B×23.89.5318569.982.618117.52131487/16"-14UNC-2B×22.31/2"-13UNC-2B×22.312.721682.693.718117.52131481/2"-13UNC-2B×23.85/8"-11UNC-2B×30■ VQ Series Double Pump ▲ Model Code 1. F3—Viton Seals Omit if not required2. 2520VQ—SeriesSeriesGeometric displacementShaft endCover end2520VQ32~67.57~45.93520VQ67.9~121.67~45.93525VQ67.9~121.632~67.54520VQ138.7~2377~45.94525VQ138.7~23732~67.54535VQ138.7~23767.9~121.63. 12—Displacement code-shaft end pumpSeriesDisplacement Code25**10 12 14 15 17 19 2135**21 25 30 32 35 3845**42 47 50 57 60 66 754. 11—Displacement code-cover end pumpSeriesDisplacement Code**202 3 4 5 6 7 8 9 10 11 12 14**2510 12 14 15 17 19 21**3521 25 30 32 35 38 45Viewed from cover end of pumpOutlet positions（All series except 4535VQ）With No.1 outlet opposite inletAANo.2 outlet 135°CCW from inletABNo.2 outlet 45°CCW from inletACNo.2 outlet 45°CW from inletADNo.2 outlet 135°CW from inletWith No.1 outlet 90°CCW from inletBANo.2 outlet 135°CCW from inletBBNo.2 outlet 45°CCW from inletBCNo.2 outlet 45°CW from inletBDNo.2 outlet 135°CW from inletWith No.1 outlet inline with inletCANo.2 outlet 135°CCW from inletCBNo.2 outlet 45°CCW from inletCCNo.2 outlet 45°CW from inletCDNo.2 outlet 135°CW from inlet With No.1 outlet 90°CW from inletDANo.2 outlet 135°CCW from inletDBNo.2 outlet 45°CCW from inletDCNo.2 outlet 45°CW from inletDDNo.2 outlet 135°CW from inlet Outlet positions （Series 4535VQ）With No.1 outlet opposite inletAANo.2 outlet opposite inletABNo.2 outlet 90°CCW from inletACNo.2 outlet inlet with inletADNo.2 outlet 90°CW from inletWith No.1 outlet 90°CCW from inletBANo.2 outlet opposite inletBBNo.2 outlet 90°CCW from inletBCNo.2 outlet inlet with inletBDNo.2 outlet 90°CW from inletWith No.1 outlet inline with inletCANo.2 outlet opposite inletCBNo.2 outlet 90°CCW from inletCCNo.2 outlet inlet with inletCDNo.2 outlet 90°CW from inletWith No.1 outlet 90°CW from inletDANo.2 outlet opposite inletDBNo.2 outlet 90°CCW from inletDCNo.2 outlet inlet with inletDDNo.2 outlet 90°CW from inlet8. L—Rotation Viewed from shaft end of pump L:Left-hand clockwise R:Right-hand counterclockwise,omit10. 10—Design number▲ Configuration and Installation Dimension (mm)★25**VQ ★35**VQ ★45**VQModelABCØDEØFGØHJØKØLM2520VQ50.826.212.725.452.4101.60 101.559.5363.588.919.0514.276.23520VQ6230.115.931.758.7127.00 126.959.5376.2106.319.0517.576.23525VQ6230.115.931.758.7127.00 126.959.5376.2106.325.417.574.74520VQ69.935.715.938.169.9127.00 126.9512.788.9120.619.0517.576.24525VQ69.935.715.938.169.9127.00 126.9512.788.9120.625.417.574.74535VQ77.835.715.938.169.9127.00 126.9512.7101.6130.231.717.5101.6 ModelNPQRSTUØVXYZ2520VQ88.1101.638.176.225084146.1121174.722.2247.63520VQ99.6114.338.182.6273.388.918114821322.2247.63525VQ109.5114.338.182.6287.388.918114821326.252.44520VQ120119.442.993.7303.5102.418114821322.2247.64525VQ136119.442.993.7325102.418114821326.252.44535VQ148.3133.342.993.7353102.418114821330.258.7▲ Calculation There were two formulas for calculating pump input power:①② —input power（ KW）—input torque（N.m）—speed(rpm)—operating pressure()—pump output at operating pressure P(L/min)—total efficiency(%)Now, the following formula is recommended, which is more convenient for the calculation Where,—theoretical flow (L/min),—mechanical efficiency % (experimental value =0.9). For example, if geometric displacement of the pump is 32ml/r, speed of the motor 1500rpm, and operating pressure 140bar, the input power needed is as follows:★4535VQ Note:Port flange kits are suitable for connecting ports with four-bolt flange SAE.Each kit includes one flange,four fixing bolts and one "O"ring,which should be separately ordered.■ VQ Series-cartridge ▲ Model Code 1. C—Cartridge kits 2. 25VQ—Series 20VQ—7~45.9ml/r 25VQ—32~67.5ml/r 35VQ—67.9~121.6ml/r 45VQ—138.7~237ml/r3. 14—Displacement code Series Displacement code20VQ2 3 4 5 6 7 8 9 10 11 12 1425VQ10 12 14 15 17 19 2135VQ21 25 30 32 35 3845VQ42 47 50 57 60 66 75Note:Rated capacity in USgpm at 1200 rpm and 0.7MPa R—Rotation（Viewed from smalled end） L—Left hand for counterclockwise R—Right hand for clockwise,omit B—W/O Bush,omit if not required6. 10—Design number SeriesØAØBØCØDLMNPHXYZ20VQ82.676.247.14.881.370.564.573.6662-22282.76×3×3.52-23625VQ96.890.552.24.898.886.677.688.1872-22497×3×3.52-24135VQ114.310872.26.4117.8104.590.8103.9472-230114.5×3×3.52-24745VQ133.312780.16.4141129105.6123.882-233133.6×3×3.52-253■ Shaft Type ★Splined shaft type ★Straight key shaft type▲ Spline Date Table（Involute Spline）SeriesShaft codeABCDØESpline data referenceNumber of teethPitchMajor diameterPitch diameterMinor diameterSuitable form20V 20VQ15141.19.5311.13.927.81316/3221.8~21.620.6418.16Side fit25V 25VQ 2520V 2520VQ1144.59.5311.13.927.81316/3221.8~21.620.6418.16Side fit2520VQ12344.59.5315.73.927.81316/3221.8~21.620.6418.16Side fit2525V17459.99.5317.33.029.21412/2431.2~31.129.6326.99Side fit35V 35VQ 35**V 35**VQ1158.79.5311.16.3535.11412/2431.2~31.129.6326.99Side fit35**VQ12358.79.5315.25.535.11412/2431.2~31.129.6326.99Side fit45V 45VQ 45**V 45**VQ1161.912.714.39.739.61412/2431.2~31.129.6326.99Side fit45VQ 45**VQ13061.912.715.29.940.41412/2431.2~31.129.6326.99Side fit▲ Straight Key ShaftSeriesShaft codeABCØDEF（Key）width×length20V 20VQ1599.5312.122.225 22.20024.5 24.44.75×3225V 25VQ 25**V 2520VQ1599.5311.122.225 22.20024.5 24.44.75×3286789.5311.125.375 25.35028.3 28.16.36×50.835V 35VQ 35**V 35**VQ173.29.5311.131.75 31.7035.30 35.057.94×38.186869.5311.134.9 34.8738.6 38.37.92×5445V 45VQ 45**V 45**VQ16212.714.2231.75 31.7035.30 35.057.92×28.58687.412.714.2238.07 38.0542.4 42.19.53×50.8■ Port Flange Kits▲ Model Code1. F—Flange2. 06—Size code3. A—Type of connection A—Thread connection B—For pipe socket welding4. M—Bolt type M—Metric I—Inch5. 10—Design numberTypePort connectionPipe sizeDimensions"O"ring GB3452.1-82CDEFHJKLNQF-06-A F-06-B—3/4486522.247.61128173/4——30×2.65—1227.7F-08-A F-08-B—1557026.252.41128171——35.5×2.65—1434.5F-10-A F-10-B—11/4648030.258.711302011/4——40×2.65—1843.2F-12-A F-12-B—11/2729435.769.913.5302011/2——50×3.55—1849.1F-16-A F-16-B—28510242.977.813.530202——65×3.55—2061.1F-20-A F-20-B—21/210211450.888.913.5382321/2——75×3.55—2277.1F-24-A F-24-B—311613562106.417.553233——85×3.5538—2590F-28-A F-28-B—31/213415369.9120.617.5532331/2——100×3.5538—28102.8F-32-A F-32-B—415016277.8130.217.553234——115×3.5538—28115.5▲ Port Flange Kits and Fixings for Single PumpsModelInlet portOutlet port20V(Q)Oil inlet flange modelF-12-A-10（F-12-B-10）F-06-A-10（F-06-B-10）Screw size x depth1/2-13UNC-21 or M12-213/8-16UNC-19 or M10-19Screw specifications1/2-13UNC-40 or M12-40 (1/2-13UNC-50 or M12-50)3/8-16UNC-35 or M10-35 3/8-16UNC-45 or M10-4525V(Q)Oil inlet flange modelF-12-A-10（F-12-B-10）F-08-A-10（F-08-B-10）Screw size x depth1/2-13UNC-23.8 or M12-23.83/8-16UNC-19 or M10-19Screw specifications1/2-13UNC-40 or M12-40 (1/2-13UNC-50 or M12-50)3/8-16UNC-35 or M10-35 3/8-16UNC-45 or M10-4535V(Q)Oil inlet flange modelF-16-A-10（F-16-B-10）F-10-A-10（F-10-B-10）Screw size x depth1/2-13UNC-22.3 or M12-22.37/16-14UNC-22.3 or M12-22.3Screw specifications1/2-13UNC-40 or M12-40(1/2-13UNC-50 or M12-50)7/16-14UNC-40 or M12-40 7/16-14UNC-50 or M12-5045V(Q)Oil inlet flange modelF-24-A-10（F-24-B-10）F-12-A-10（F-12-B-10）Screw size x depth5/8-11UNC-30 or M16-301/2-13UNC-23.8 or M12-23.8Screw specifications5/8-11UNC-70 or M16-70 (5/8-11UNC-55 or M16-55)1/2-13UNC-40 or M12-40 (1/2-13UNC-50 or M12-50)▲ Port Flange Kits and Fixings for Double Pumps Model Inlet portOutlet No.1,shaft endOutlet No.2,rear end2520V(Q)Oil inlet flange modelF-20-A-10（F-20-B-10）F-08-A-10（F-08-B-10）F-06-A-10（F-06-B-10）Screw size x depth1/2-13UNC-23.8 or M12-23.83/8-16UNC-19 or M10-193/8-16UNC-19 or M10-19Screw specifications1/2-13UNC-45 or M12-45 (1/2-13UNC-55 or M12-55)3/8-16UNC-35 or M10-35(3/8-16UNC-45 or M10-45)3/8-16UNC-35 or M10-35(3/8-16UNC-45 or M10-45)2525V(Q)Oil inlet flange modelF-20-A-10（F-20-B-10）F-08-A-10（F-08-B-10）F-08-A-10（F-08-B-10）Screw size x depth1/2-13UNC-23.8 or M12-23.83/8-16UNC-19 or M10-193/8-16UNC-19 or M10-19Screw specifications1/2-13UNC-45 or M12-45(1/2-13UNC-55 or M12-55)3/8-16UNC-35 or M10-35(3/8-16UNC-45 or M10-45)3/8-16UNC-35 or M10-35(3/8-16UNC-45 or M10-45)3520V(Q)Oil inlet flange modelF-24-A-10（F-24-B-10）F-10-A-10（F-10-B-10）F-06-A-10（F-06-B-10）Screw size x depth5/8-11UNC-30 or M16-307/16-14UNC-22.3 or M12-22.33/8-16UNC-19 or M10-19Screw specifications5/8-11UNC-70 or M16-70(5/8-11UNC-55 or M16-55)7/16-14UNC-40 or M12-40 7/16-14UNC-50 or M12-503/8-16UNC-35 or M10-35 (3/8-16UNC-45 or M10-45)3525V(Q)Oil inlet flange modelF-24-A-10（F-24-B-10）F-10-A-10（F-10-B-10）F-08-A-10（F-08-B-10）Screw size x depth5/8-11UNC-30 or M16-307/16-14UNC-22.3 or M12-22.33/8-16UNC-19 or M10-19Screw specifications5/8-11UNC-70 or M16-70 (5/8-11UNC-55 or M16-55)7/16-14UNC-40 or M12-407/16-14UNC-50 or M12-503/8-16UNC-35 or M10-35(3/8-16UNC-45 or M10-45)4520V(Q)Oil inlet flange modelF-28-A-10（F-28-B-10）F-12-A-10（F-12-B-10）F-06-A-10（F-06-B-10）Screw size x depth5/8-11UNC-30 or M16-301/2-13UNC-23.8 or M12-23.83/8-16UNC-19 or M10-19Screw specifications5/8-11UNC-70 or M16-70 (5/8-11UNC-55 or M16-55)1/2-13UNC-40 or M12-40 (1/2-13UNC-50 or M12-50)3/8-16UNC-35 or M10-35(3/8-16UNC-45 or M10-45)4525V(Q)Oil inlet flange modelF-28-A-10（F-28-B-10）F-12-A-10（F-12-B-10）F-08-A-10（F-08-B-10）Screw size x depth5/8-11UNC-30 or M16-301/2-13UNC-23.8 or M12-23.83/8-16UNC-19 or M10-19Screw specifications5/8-11UNC-70 or M16-70 (5/8-11UNC-55 or M16-55)1/2-13UNC-40 or M12-40 (1/2-13UNC-50 or M12-50)3/8-16UNC-35 or M10-35(3/8-16UNC-45 or M10-45)4535V(Q)Oil inlet flange modelF-32-A-10（F-32-B-10）F-12-A-10（F-12-B-10）F-10-A-10（F-10-B-10）Screw size x depth5/8-11UNC-30 or M16-301/2-13UNC-23.8 or M12-23.87/16-14UNC-22.3 or M12-22.3Screw specifications5/8-11UNC-70 or M16-70 (5/8-11UNC-55 or M16-55)1/2-13UNC-40 or M12-40(1/2-13UNC-50 or M12-50)7/16-14UNC-40 or M12-407/16-14UNC-50 or M12-50Not:(Port flange model) (Tapped hole size ×hole depth)（Screw specification）■ Installation and Application1.Operating oil①Anti-wear hydraulic oil is recommended. It's viscosity range: 10~100cSt (1.8~ 13°E),recommended viscosity 24cSt(50℃).②Filtration: the filtration rating shouldn't be lower than 25μm, a filter with filtration rating of 70~150μm should be fitted at inlet port and its rated flow more than twice of that of the pump.③Temperature range: ambient temperature -20~+70℃; operating temperature 10-60℃.④Fire resistance fluid Special seal should be used when using fire resistance fluid; for rated pressure and max. speed of the pump, refer to that in the main performance data table.2.Installation①Foot and frame for pump must be reliable, solid and good in vibration absorbance.②Horizontal mounting is recommended to maintain necessary case fluid level. Concentricity of shafts between pump and motor is important to pump life and should be within Ø0.1mm. Radial or axial load can't be applied on pump shaft and a flexible coupling should be used and rigid linkage not permitted.③To reduce noise and vibration of system caused by trapped air, attachment flange at inlet port, all fittings and pipelines must be strictly sealed.④Before starting the pump, you should check if the inlet and outlet have been correctly connected and the rotation of the pump is in the line with the arrow in the nameplate. To prevent the pump from cavitation caused by the first starting or stopping run for a longer time, air should be bled from the pump delivery line. This may be accomplished by loosening a connection in the delivery line close to the pump. An air bleed valve is available for this purpose. When starting, the pump should be repeatedly jogged without any load. After the pump may normally run, it can be actually primed.⑤Suction lift of pump shouldn't be higher than 500mm.3.Replacing cartridge kitThe cartridge kit design of V and VQ series vane pumps offers fast and efficient field serviceability. When replacing the cartridge kit, seals inside the pump should be checked to avoid them crimping;when tightening the fastening screws, they should be treated with even force in diagonal direction.
