Swash Plate Axial Piston Pump Swash Plate Axial Piston Motor
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- Rudolf Copeland
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1 HENGLI HYDRAULIC Hydraulic Components Piston Pump and Motor Swash Plate Axial Piston Pump Swash Plate Axial Piston Motor Technical specifications HP3V HP5V HP3G HM5X HM3V V9N Version Date HL217-4
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3 Company Profile Denmark Service Center Netherlands and Belgium Service Center ((Chicago ) Hengli America Co., Inc. ( Germany ) WACO GmbH HAWE Inline HydrauliK GmbH ( Japan ) Hengli Kouwa Corp.Ltd. European Marketing Center ( Shanghai China ) Lixin Hydraulics Co.,Ltd. India Service Center ( Changzhou China ) Hengli Hydraulic Co.,Ltd. Hengli Hydraulic Technology Co.,Ltd. Hengli Casting Factory Brazil Service Center Hengli Cold-drawn Factory Hengli Fluid Technology Co., Ltd. Australia Service Center 217 Build workshop in Chicago, Speed up the development of North America Market. 216 Establish sales center in European (Stuttgart). Subsidiaries in American and Japan were founded. Hengli acquired Shanghai Lixin Hydraulic Co.,Ltd. Hengli casting factory was established and started the production of precise hydraulic castings Started the strategic cooperation with HAWE,and financed HAWE InLine Hydraulik GmbH. 214 Acquired WACO in Stuttgart. New factory of Hengli Hydraulic was built. Developed multi-way valve and plunger variable pump for 8T excavators. 211 Hengli cylinders production base in Wujin industrial zone was established. Hengli was successfully listed on Shanghai Stock Exchange. Started developing and manufacturing large cylinders for ports and metallurgical equipment Became the approved supplier of Caterpillar, marking our entering the supply system of high end excavators. 199 Wuxi Hengli Hydro pneaumatic Co.,Ltd was founded and produced cylinders and pneumatic valves Developing high pressure cylinders for excavators started. Hengli Hydraulic Cylinder Co.,Ltd was founded and started the mass production of excavator cylinders and tailor-made cylinders.
4 Hengli Hydraulic Co.,Ltd. Total Investment: 5 million USD. Building area 18K square meters. Design Capacity: 48K pcs excavator cylinders (18K Mini HEX, 3K Medium and Large HEX). 15K pcs customized cylinders. Hengli Hydraulic Technology Co.,Ltd. Total investment: 5 million USD. Area: 4K square meters. Phase 1 has been put into operation. Current capacity: 2K pcs excavator piston pump, 1K pcs excavator multi-way valve, 5K pcs industrial valves and 8 sets various hydraulic systems. Hengli Hydraulic Casting Branch Company Total investment: 1 million USD. Building area: 8K square meters. Annual capacity: 25K ton casting. Hengli Cold-drawn workshop Occupy Area: 2K square meters. Capacity: 599 ton. Lixin Hydraulics Co.,Ltd. Started in 1967, Lixin is one of the earliest manufacturers for hydraulic elements and systems. Introduced Rexroth's technology in 1984 which enable us to producing Rexroth's series pressure, flow and directionvalves, and also we can producing various kinds of hydraulic systems. Hengli Pneumatic Technology Co. Ltd. Established in 199. Specialized in manufacture of pneumatic actuators, control and handling components and other accessories. HAWE InLine Hydraulik GmbH Founded in 1973, produces axial piston pumps. Located in Berlin, Germany. Occupy Area of 8, 1 square meters. In Nov 215 Hengli signed a global strategic partnership agreement with HAWE and acquired HAWE InLine Hydraulik company. WACO GmbH Established inhemmingen, Hannover in Relocated to Illingen, Stuttgart in October 29 for production expansion. Hengli America Co.,Inc. Founded in 212. Build workshop in Chicago,Speed up the development of North America Market.
5 Contents Page HP3V SERIES Swash-plate Type Axial Piston Variable Displacement Pump(Open circuit) 1-4 HP5V SERIES Swash-plate Type Axial Piston Variable Displacement Pump(Open circuit) 41-6 HP SERIES Caution for using V9N SERIES Swash-plate Type Axial Piston Variable Displacement Double Pump HP3G SERIES Swash-plate Type Axial Piston Variable Displacement Pump (Closed circuit) 79-9 HM3V SERIES Swash Plate type Axial Piston Variable Displacement Motor 91-1 HM5X SERIES Swash plate type Axial Piston Fixed Displacement Motor 11-16
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7 1 /4 HP3V SERIES Swash-plate Type Axial Piston Variable Displacement Pump Hengli swash-plate axial piston pump HP3V, the key parts of the pump are made of imported materials, quality strictly controlled, suitable for highpressure hydraulic applications. Apply to open hydraulic circuit Displacements 28cc/rev~14cc/rev Rated pressure 35bar, Peaking pressure 4bar. Contents Technical Data 2 Type introduction 3-5 Regulators introduction 6-11 Performance curves HP3V28/45 Performance curves HP3V6/8 Performance curves HP3V125/14 Performance curves Installation size 18-3 HP3V28 Installation size HP3V45/6 Installation size 2-23 HP3V8 Installation size HP3V125/14 Installation size Priority selection of spline shaft or straight shaft 32 Through Drive Installation Options Size of Tandem pumps 38 Setting of regulator and Max. displacement 39 Features Variable pump in swash-plate design for open circuit. High continuous pressure. Exceptional self-priming capability. Available with American (SAE) and Japanese (JIS) mounting flanges and shafts. Excellent reliability and long life. High power to weight ratio. Variety of control options. Optional through drive. Quick control response. Low pressure pulsation and low noise. Developed for engineering, mobile vehicles, Industrial and other industrial application. 1
8 2/4 Hengli hydraulic Piston Pump HP3V Series Technical Data 1 Size Displacement (cc/rev ) Pressure (bar) Rated Peak Rotation speed (rpm) Max for self-priming *1 Max *2 Weight (Kg) Quantity of oil to fill pump case (L) Input torque rating (Nm) Temperature Range ( ) Viscosity Range (mm 2 /s) HP3V HP3V HP3V HP3V ~ *3 (The best use of viscosity range 16~36 mm 2 /s) HP3V HP3V Steady state suction pressure should be MPa and above(at normal condition); 2 If suction pressure less than bar, Boost pressure should be required; 3 In case of 2-1mm 2 /s, please allow system to warm up before using machine. 2
9 Piston Pump HP3V Series Hengli hydraulic 3 /4 Type introduction HP3V 8 / A V 1 O R B2 S1 M L1/1 D 2 T Product series 1 Product series HP3V 1 Displacement 2 Displacement cc/rev Design series 3 Design series A Series: HP3V45-14 B Series: HP3V28 A B Seals 4 Seals FKM ( Viton rubber: DIN ISO 1629) NBR (Nitrile rubble :DIN ISO 1629) V N Hydraulic circuit 5 Hydraulic circuit Open circuit 1 Through Drive Code Without through drive O Standard configuration with gear pump 6 cc/rev X1 Standard configuration with gear pump 1 cc/rev X2 Mounting Flange Spline shaft SAE A 82-2 SAE J T 16/32DP A1 SAE J T 16/32DP A2 SAE B 11-2 SAE J T 16/32DP B1 SAE J T 16/32DP B2 SAE C SAE J T 12/24DP C1 SAE J T 12/24DP C2 SAE C SAE J T 12/24DP C3 SAE J T 12/24DP C4 SAE D SAE J T 8/16DP D1 3
10 4/4 Hengli hydraulic Piston Pump HP3V Series Type introduction Direction of Rotation 7 Viewed on drive shaft Clockwise Counter-clockwise R L 1 Input Mounting flanges Mounting flanges size Code SAE B 11-2 B2 SAE C C2 SAE C 127-2/4 bolt (same flange) C4 SAE D D4 8 ISO 319/2-1, 2 bolt I1 ISO 319/2-125, 2 bolt I2 ISO 319/2-16, 4 bolt I3 ISO 319/2-18, 4 bolt I4 ISO 319/2-125, 2/4 bolt (same flange) I5 Input Shaft 9 Shaft size Code SAE J T 16/32DP S1 SAE J T 16/32DP S2 SAE J T 12/24DP S3 SAE J T 12/24DP S4 SAE J T 8/16DP S5 JIS D S6 DIN 548 W g D2 DIN 548 W g D3 DIN 548 W g D4 SAE J B straight shaft K1 SAE J B straight shaft K2 SAE J B straight shaft K3 SAE J B straight shaft K4 DIN straight shaft K5 DIN straight shaft K6 DIN straight shaft K7 DIN straight shaft K8 Thread type of Flange Fixing Port 1 Thread type Metric threads UNC threads M S 4
11 Piston Pump HP3V Series Hengli hydraulic 5 /4 Type introduction Control type 11 Control type Code Cover plate, apply to constant displacement pump N Pressure cut-off Power Control (*) Only pressure control DR +Load sensing with orifice R4 L +Load sensing without orifice R4 L1 Remotely operated+ Load sensing P +Electric proportional displacement DR-EDO Electric proportional displacement DR-EDC +Swashplate indicator Pressure cut-off+ Load sensing L1/1 Remotely operated+ Load sensing P/1 Electrically (negative control) L1/1-E +Pressure cut-off+ Load sensing Hydraulic control + Pressure cut-off L1/1-H + Load sensing +Electric proportional displacement DR/1-EDO + Pressure cut-off Electric proportional displacement DR/1-EDC + Pressure cut-off, With swash indicator Electric proportional displacement Without swashplate indicator EDO With swashplate indicator EDC 1 Connector for solenoids Code Without solenoid Blank AMP Junior timer; 2 contact pin, A (without suppressor diode) Deutsch DT4-2P ; 2 contact pin, D (without suppressor diode) DIN EN ;3 contact pin, H (without suppressor diode) Input Voltage 13 Without solenoid Blank 12VDC 1 24VDC 2 Application Conditions Code Apply to excavator T Other mobile machinery, Blank construction machinery, industrial application Remark: = available; = On request; NOTE: (*) For power control, 28cc/rev is not available now. 5
12 6/4 Hengli hydraulic Piston Pump HP3V Series Regulators introduction Code: L (L1) 1 Control Type : 1. Load sensing Standard setting:15bar Adjustment range:1bar-21bar 2. Pressure Cut-off Standard setting:32bar Adjustment range:21bar-32bar L1 option(difference from L) With the L1 option, the bleed off orifice(r4)is plugged, when this option is applied, there must be another bleed off orifice in the external L (L1) valving to prevent trapped pressure. Pump flow Pressure Function and Features: Load sensing+ Pressure Cut-off The load sensing control is a flow control option that operates as a function of the load pressure to regulate the pump displacement to match the actuator flow requirement. The load sensing control compares pressure before and after the sensing orifice and maintains the pressure drop across the orifice (differential pressure Δp) and with it the pump flow constant. If the differential pressure Δp increases, the pump is swivelled back (towards Vmin), and if the differential pressure Δp decreases, the pump is swivelled out (towards Vmax) until the pressure drop across the sensing orifice in the valve is restored. Δp=Pp-Pa Pump displacement is controlled to match the flow requirement as a function of the system differential pressure(load pressure vs delivery pressure).in addition, there is a pressure cut off function incorporated into the control. The pressure cut off control keeps the pressure in a hydraulic system constant within its control range even under varying flow conditions. the variable pump only moves as much hydraulic fluid as is required by the actuators. if the operating pressure exceeds the set point set at the pressure control valve, the pump displacement is automatically swivelled back until the pressure deviation is corrected. PL Hydraulic Circuit: R4 LS valve R1 Cut-off valve P T1 T2 S 6
13 Piston Pump HP3V Series Hengli hydraulic 7 /4 Regulators introduction Code: P Control Type : Function and Features: 1. Load sensing Standard setting:15bar Adjustment range:1bar-21bar 2. Pressure Cut-off Standard setting:32bar Adjustment range:21bar-32bar P Pressure cut-off Pressure The Pressure Cut-off regulator monitors outlet pressure P once the pressure reaches the cut-off setting, the pump will return to minimum displacement. Pump flow 1 Remote Control The pump can be remotely controlled by connecting a relief valve to the PL port of the regulator. The pump can also be unload at a low pressure continue standby condition by using a solenoid valve. Hydraulic Circuit: PL R3 LS valve R1 Cut-off valve P T1 T2 S P 7
14 8/4 Hengli hydraulic Piston Pump HP3V Series Regulators introduction Code: /1 1 Control Type : 1. Load sensing Standard setting: 15bar Adjustment range: 1bar-21bar 2. Pressure Cut-off Standard setting: 32 bar Adjustment range: 21 bar-32 bar 3. Torque limiting Pump flow Pressure Function and Features: _/1 Load Sense and Pressure Cut-off with Torque limiting The L/L1 control functions as previously noted. In response /1 to a rise in delivery pressure the swash plate angle is decreased, restricting the input torque. This regulator prevents excessive load against the prime mover. The torque limit control module is comprised of two springs that oppose the spool force by the system pressure. By turning an outer and inner spring adjustment screw, the appropriate input torque limit can be set. Torque limit control valve Hydraulic Circuit: PL LS valve R4 R1 Cut-off valve P T1 T2 S /1 8
15 Piston Pump HP3V Series Hengli hydraulic 9 /4 Regulators introduction Code: /1-E Control Type : 1. Load sensing Standard setting:15bar Adjustment range:1bar-21bar 2. Pressure Cut-off Standard setting: 32bar Adjustment range: 21bar-32bar 3. Port Pr pressure: 2bar~45bar 4. Electromagnet characters Pump flow I1 I2 I3 Pressure 1 Voltage(V) Current(A) Resistence(Ω) Insulation grade /1-E* ±1%(2 ) H(18 ) ±1% UP to IP6K6/IPX9K 5. Connector (deutsch or Amp) DEUTSCH: DT4-2P-E5 AMP: Function and Features: _/1-E Load Sense and Pressure Cut-off with Torque limiting The L/L1 control functions as previously noted. It controls the input torque of the pump by changing different current, specific current is related to certain input torque, thus satisfy needs of different torque on excavator 15MESH Pr Dr2 Hydraulic Circuit: PL PC valve LS valve Cut-off valve P Dr1 E T2 S T1 /1-E* 9
16 1/4 Hengli hydraulic Piston Pump HP3V Series Regulators introduction P Code: /1-H 1 Control Type : 1. Load sensing Standard setting:15bar Adjustment range:1bar-21bar 2. Pressure Cut-off Standard setting: 32bar Adjustment range: 21bar-32bar 3. Port Pr pressure: bar~39bar Pump flow H Model (Pi=MPa) L Model (Pi=3.5MPa) Pressure Function and Features: /1-H _/1-H Load Sense and Pressure Cut-off with Total torque limiting The L/L1 control functions as previously noted. It controls the input torque of the pump by changing different input pressure of port Pr, specific current is related to certain input torque, thus satisfy needs of different torque on excavator. Hydraulic Circuit: 15MESH PC valve Pr Dr2 PL LS valve Cut-off valve P P2 Dr1 T2 S1 T1 S2 /1-H 1
17 Piston Pump HP3V Series Hengli hydraulic 11 /4 Regulators introduction Code: *-ED* or ED* Control Type : The displacement of a variable displacement pump can be adjusted via an electro-hydraulic proportional adjustment. Control current range is Displacement 1 ca. 3 ma to ca. 8 ma(24vdc) or ca.6ma to ca.16ma(12vdc) MIN MAX Current I(mA) Function and Features: Electric proportional displacement The main pump is supplied with servo pressure /ED via port St as soon as the servo pump is started. The solenoid is usually deenergized during start of operation, i.e. the valve piston is pushed against its stop by the metering spring. This opens a passage to the larger area of the piston which returns the swash plate to its idle position. There is always pressure apparent at the smaller side of the control piston. When the solenoid is energized with 3 ma (24VDC-solenoid) or 6 ma (12VDCsolenoid) it will push the valve piston against the spring force thereby connecting the larger area of the control piston with the tank. The control piston will move the swash plate against the metering spring in direction of increased delivery flow and loading the metering spring. This movement will stop as soon as the forces of the metering spring and the proportional solenoid are balanced thereby closing the prop. valve. Both total delivery flow and total stoke of the solenoid are achieved when the solenoid is energized with 8 ma (24VDC-solenoid) or 16 ma (12VDC-solenoid). Use electro-proportional displacement control valve and swash indicator can realize the close circuit control of the pump. Hydraulic Circuit: MA 4~6bar St P X T2 S T1 /ED 11
18 12/4 Hengli hydraulic Piston Pump HP3V Series Performance curves HP3V28 Performance curves 1 HP3V28 性能曲线 Pump efficiency (%) Self-priming Capability Displacement ratio q/q max Pressure bar Volume efficiency % Pump flow L/min 8 7 2,5min ,min Inlet Pressure bar Bearing Life Noise Level Bearing Life L1 (hours) 1,, 1, 1, 1, 1 1,8rpm 1,5rpm 1,2rpm 1,rpm 1 1 Electromotor capacity KW Noise Level db(a) ,8min ,5min Pressure bar HP3V45 性能曲线 12
19 Piston Pump HP3V Series Hengli hydraulic 13 /4 Performance curves HP3V45 Performance curves HP3V45 性能曲线 Pump efficiency (%) Self-priming Capability 1 Displacement ratio q/q max Volume efficiency % Pump flow L/min ,8min Pressure bar Inlet Pressure bar Bearing Life Noise Level Bearing Life L1 (hours) 1,, 1, 1, 1, 1 1,8rpm 1,5rpm 1,2rpm 1,rpm 1 1 Noise Level db(a) ,8min ,5min Electromotor capacity KW Pressure bar 13
20 14/4 Hengli hydraulic Piston Pump HP3V Series Performance curves HP3V6 Performance curves 1 HP3V6 性能曲线 Pump efficiency (%) Self-priming Capability Displacement ratio q/q max Volume efficiency % Pump flow L/min ,8min Pressure bar Inlet Pressure bar Bearing Life Noise Level Bearing Life L1 (hours) 1,, 1, 1, 1, 1 HP3V8 性能曲线 1,8rpm 1,5rpm 1,2rpm 1,rpm 1 1 Electromotor capacity KW Noise Level db(a) ,8min ,5min Pressure bar 14
21 Piston Pump HP3V Series Hengli hydraulic 15 /4 Performance curves HP3V8 Performance curves HP3V8 性能曲线 Pump efficiency (%) Self-priming Capability 1 Displacement ratio q/q max Volume efficiency % Pump flow L/min ,8min Pressure bar Inlet Pressure bar Bearing Life L1 (hours) 1,, 1, 1, 1, 1 Bearing Life 1,8rpm 1,5rpm 1,2rpm 1,rpm 1 1 Noise Level db(a) Noise Level 1,8min -1 1,5min Electromotor capacity KW Pressure bar 15
22 16/4 Hengli hydraulic Piston Pump HP3V Series Performance curves HP3V125 Performance curves 1 HP3V125 性能曲线 Pump efficiency (%) Self-priming Capability Displacement ratio q/q max Volume efficiency % Pump flow L/min ,8min Pressure bar Inlet Pressure bar Bearing Life Noise Level Bearing Life L1 (hours) 1,, 1, 1, 1, 1 1,8rpm 1,5rpm 1,2rpm 1,rpm 1 1 Noise Level db(a) ,8min ,5min HP3V14 性能曲线 Electromotor capacity KW Pressure bar 16
23 Piston Pump HP3V Series Hengli hydraulic 17 /4 Performance curves HP3V14 Performance curves Displacement ratio q/q max Pump efficiency (%) Pressure bar Volume efficiency % Pump flow L/min 3 25 Self-priming Capability 1,8min Inlet Pressure bar 1 Bearing Life L1 (hours) 1,, 1, 1, 1, 1 Bearing Life 1,8rpm 1,5rpm 1,2rpm 1,rpm 1 1 Electromotor capacity KW Noise Level db(a) Noise Level ,8min ,5min Pressure bar 1.Values shown in above figures, excluding those for bearing life, are not guaranteed values, but mean level.bearing life is basic rated life of calculation (reliability 9%); 2.Noise level of the pump is tested under silent circumstance (tested behind the pump about 1 meter); 3.Under actual working conditions, noise level of the pump may be higher than that in the curves. 17
24 18/4 Hengli hydraulic Piston Pump HP3V Series Installation size HP3V28 installation size Displacement is unadjustable (adjustable displacement need optional) HP3V28 With Cut-off/Load Sense Control (Clockwise Rotation) For the CCW pump just reverse the inlet and outlet port PL PL P T1 Dr Φ Adjustment screw for displacement control Adjustment screw for load sensitive control SAE B 2 hole SAE J Φ11.6 h7 ( -.35 ) Port Details 25 T Adjustment screw for pressure cut-off control 3.2 S 58.7 Φ32 Displacement adjustable (optional) T1 T2 P Port PL PL S Port 142 P S Port Name Working port Suction Port 3/4"SAE J518C code 61 (5psi) 1-1/4"SAE J518C code 61 (3psi) Port Size and Description M (metric) M1X1.5 (depth 17mm) S(UNC) 3/8 16UNC-2B (depth 17mm) M (metric) M1X1.5(depth 17mm) S(UNC) 3/8 16UNC-2B (depth17mm) Tightening Torque (N-m) T1 T2 Case drain Port SAE J1926/1 ( 3/4"-16UNF-2B )depth 16mm 98 PL LS Control Port SAE J1926/1 ( 7/16"-2UNF-2B)depth 11.5mm 12 Dr1 Air Bleed Port SAE J1926/1 ( 7/16"-2UNF-2B)depth 17mm 12 Dr2 Air Bleed Port M1X1 depth 8.5mm
25 Piston Pump HP3V Series Hengli hydraulic 19 /4 Installation size HP3V28 Mounting Flange SAE B 2 hole SAE J Φ14 Φ11.6 h7 ( -.35 ) SAE "B2" type HP3V28 Input Shaft type Φ Φ SAE J T 16/32DP SAE J "S1" type spline shaft "K1"type straight shaft 19
26 2/4 Hengli hydraulic Piston Pump HP3V Series Installation size HP3V45/6 Installation size HP3V45/6 With Cut-off/Load Sense Control with Torque limit (Clockwise Rotation) For the CCW pump just reverse the inlet and outlet port Adjustment screw for pressure cut-off control Adjustment screw for load sensitive control Dr2 Pf T Φ Adjustment screw for torque Adjustment screw for max displacement S T1 Φ11.6 h7 ( -.35 ) Φ24.98 h11 SAE J T-16/32DP Dr1 T At max displacement S Φ P PL Dr Port Details Port Name Port Size and Description Tightening Torque (N-m) P Working port 1"SAE J518C Code 61 M (metric) M1X1.5 (depth 17mm) (5psi) S(UNC) 3/8 16UNC-2B (depth 17mm) 57 S Suction Port 1-1/2"SAE J518C Code 61 M (metric) M12X1.75(depth2mm) (3psi) S(UNC) 1/2 13UNC-2B (depth 2mm) 98 T1 T2 Case drain Port SAE J1926/1 ( 3/4"-16UNF-2B ) depth 16mm 98 PL LS Control Port SAE J1926/1 ( 7/16"-2UNF-2B) depth 11.5mm 12 Dr1 Air Bleed Port SAE J1926/1 ( 7/16"-2UNF-2B) depth 17mm 12 Dr2 Air Bleed Port M1X1 (depth 8.5mm) 12 Pr Electronic control or Hydraulic control pilot SAE J1926/1 ( 7/16"-2UNF-2B)depth 11.5mm 12 2
27 Piston Pump HP3V Series Hengli hydraulic 21 /4 Installation size HP3V45/6 With Electrical Control for Torque limit Pr Pr
28 22/4 Hengli hydraulic Piston Pump HP3V Series Installation size HP3V45/6 Mounting Flange SAE B 2 hole SAE J Φ11.6 h7 ( -.35 ) SAE "B2" type 14.4 ISO 319/2-1A2HW 45 Φ1 h7 ( -.35 ) ISO "I1" type 22
29 Piston Pump HP3V Series Hengli hydraulic 23 /4 Installation size HP3V45/6 Input Shaft type Φ Φ25 Φ21.86 Φ24.98 SAE J T 16/32 DP SAE J T 16/32 DP "S1" type spline shaft "S2" type spline shaft SAE J DIN "K2" type straight shaft "K5" type straight shaft 23
30 24/4 Hengli hydraulic Piston Pump HP3V Series Installation size HP3V8 Installation size HP3V8 With Cut-off/Load Sense Control with Torque limit (Clockwise Rotation) For the CCW pump just reverse the inlet and outlet port. 1 Adjustment screw for pressure cut-off control Adjustment screw for load sensitive control Dr 处 T P 35 Φ Adjustment screw for torque Adjustment screw for max displacement -.5 Φ127 Dr1 35 T2 S 77.8 Φ Port Details Port Name Port Size and Description Tightening Torque (N-m) P Working port 1"SAE J518C Code 61 (5psi) M (metric) M1X1.5 (depth 17mm) S(UNC) 3/8 16UNC-2B (depth 17mm) 57 S Suction Port 2"SAE J518C Code 61 M (metric) M12X1.75(depth 2mm) (3psi) S(UNC) 1/2 13UNC-2B (depth 2mm) 98 T1 T2 Case drain Port SAE J1926/1 ( 3/4"-16UNF-2B) (depth 16 mm) 98 PL LS Control Port SAE J1926/1 ( 7/16"-2UNF-2B) (depth 11.5mm) 12 Dr1 Air Bleed Port SAE J1926/1 ( 7/16"-2UNF-2B) (depth 17mm) 12 Dr2 Air Bleed Port M1X1 (depth 8.5mm) 12 Pr Electronic control or Hydraulic control pilot SAE J1926/1 ( 7/16"-2UNF-2B)depth 11.5mm 12 24
31 Piston Pump HP3V Series Hengli hydraulic 25 /4 Installation size Hp3v8 With Electro-Proportional Torque Controller/ Hydraulic Torque Controller Pr Pr Pr Electro-proportional torque controlle 23.1 Pr Hydraulic torque controller HP3V8 Mounting Flange SAE C 2 hole SAE J Φ SAE "C2"type 25
32 26/4 Hengli hydraulic Piston Pump HP3V Series Installation size HP3V8 Input Shaft type Φ24.98 Φ SAE J T 16/32 DP SAE J T 12/24 DP "S2" type spline shaft "S3" type spline shaft Φ Φ31.75 JIS D21 32x11x2.5 SAE J "S6"type spline shaft "K3" type straight shaft 26
33 Piston Pump HP3V Series Hengli hydraulic 27 /4 Installation size HP3V125/14 installation size HP3V125/14 With Cut-off/Load Sense Control with Torque limit (Clockwise Rotation) For the CCW pump just reverse the inlet and outlet port Adjustment screw for pressure cut-off control Adjustment screw for load sensitive control PL Dr2 1 Pf 4-Φ M14 T T Φ T Adjustment screw for max displacement Φ Dr1 3 T2 S 4-M Φ Port Details P S Port Name Working port Suction Port 1-1/4 SAE J518C Code 62 (5psi) 2-1/2 SAE J518C Code 61 (25psi) Port Size and Description M (metric) M14X2 (depth 19mm) S(UNC) 1/2 13UNC-2B (depth 19mm) M (metric) M12X1.75(depth 22mm) S(UNC) 1/2 13UNC-2B (depth22mm) Tightening Torque (N-m) T1 T2 Case drain Port SAE J1926/1 ( 1-1/16-12UNF-2B )(depth 23 mm) 167 PL LS Control Port SAE J1926/1 ( 7/16-2UNF-2B)(depth 17 mm) 12 Dr1 Air Bleed Port SAE J1926/1 ( 7/16-2UNF-2B)(depth14 mm) 12 Dr2 Air Bleed Port M1X1 (depth 8.5mm) 12 Pr Electronic control or Hydraulic control pilot SAE J1926/1 ( 7/16"-2UNF-2B)depth 11.5mm
34 28/4 Hengli hydraulic Piston Pump HP3V Series Installation size HP3V125/14 With Electrical Control for Torque limit 1 Pr Pr
35 Piston Pump HP3V Series Hengli hydraulic 29 /4 Installation size HP3V125/14 Electric proportional displacement pump installation size ( Please refer to "Page 11/4 " for hydraulic Circuit. ) P Φ32 T M14-6H depth Φ21 through hole Electrical Connector DIN EN or Deutsch DT4-2P W5X2X3X24X9g DIN Dr2 X St 5 MA Φ Φ49.6 h11( -.16 ) Φ to the shaft shoulder Dr1 T Φ M14-6H 25 depth S Port Details P S Port Name Delivery port Suction Port 1-1/4'' SAE J518C Code 62 (5psi) 2-1/2'' SAE J518C Code 61 (25psi) Port Size and Description Tightening Torque (N-m) M14 2 (depth 19mm) 98 M (depth 22mm) T1 T2 Drain port DIN 3852 M (depth 16mm) 12 St Pilot port DIN 3852 M (depth 12mm) 35 Dr1 Air Bleed Port SAE J1926/1 ( 7/16''-2UNF-2B) 12 Dr2 Air Bleed Port M1 1 (depth 8.5mm) ISO MA pressure port DIN 3852 M (depth 12mm)
36 158.4 Φ /4 Hengli hydraulic Piston Pump HP3V Series Installation size 1 HP3V125/14 Mounting Flange 181 SAE 2 hole /4 hole SAE J /4 Φ SAE "C4" type 127-2/4 4-Φ2 through hole SAE 4 hole SAE J Φ SAE "D4"type ISO 319/2-18A2HW 4-Φ ISO "I4"type 9 3
37 Piston Pump HP3V Series Hengli hydraulic 31 /4 Installation size HP3V125/14 Input Shaft type Φ Φ45 Φ Φ31.75 Φ Φ38.1 SAE J T 12/24 DP SAE J T 12/24 DP "S3" type spline shaft "S4" type spline shaft SAE J T 8/16 DP SAE J "S5" type spline shaft "K3" type straight shaft SAE J DIN "K4" type straight shaft "K8" type straight shaft 31
38 32/4 Hengli hydraulic Piston Pump HP3V Series Installation size HP3V125/14 Input Shaft type 1 PL W45X2X3X21X9g DIN 548 W5X2X3X24X9g DIN 548 P Ø Ø "D3" type spline shaft "D4" type spline shaft Priority selection of spline shaft or straight shaft Shaft code Size S1 SAE J T 16/32DP S2 SAE J T 16/32DP S3 SAE J T 12/24DP S5 SAE J T 8/16DP K1 SAE J B straight shaft K2 SAE J B straight shaft K3 SAE J B straight shaft K4 SAE J B straight shaft 32
39 Piston Pump HP3V Series Hengli hydraulic 33 /4 Through Drive Installation Options X Type 1 A1 A2 A3 Gear pump information Rated pressure Peak pressure Theoretical displacement 6cc/rev 39bar 7bar 6cc/rev 1cc/rev 39bar 5bar 1cc/rev 45/ /14 A A A
40 34/4 Hengli hydraulic Piston Pump HP3V Series Through Drive Installation Options A1 Type SAE A SAE J T 16/32DP 1 SAE J T 16/32 DP 45 Φ16 Φ M1 depth 17 L L1 SAE J T 16/32 DP 28SAE J / /14 11T 16/32 DP L L M depth Φ Φ A2 Type 9.5 L1 SAE A SAE J L2 11T 16/32DP L1 L2 SAE J T 16/32 DP M1 depth 17 Φ16 Φ16 Φ SAE J T 16/32 DP 45 M1 depth Φ16 L L1 Φ M12 depth 2 Φ146 L1 L /6 11SAE J T 16/32 DP /14 31 L2 L SAE J T 16/32 DP 11 Φ M12 34 depth 45 2 Φ146
41 Piston Pump HP3V Series Φ M1 depth 17 Hengli hydraulic 35 /4 Through Drive Installation 8 Options 9.5 B1 Type L1 L2 SAE B SAE J T 16/32DP SAE J T 16/32 DP Φ M12 depth 2 Φ146 L2 L1 11 SAE J T 28 16/32 DP 45/ /14 L L B2 Type L2 SAE B SAE J T 16/32DP SAE J T 16/32 DP 11 L1 L2 11 Φ Φ M12 depth 2 45 M12 depth 2 Φ146 Φ146 L2 L / /14 L L
42 36/4 Hengli hydraulic Piston Pump HP3V Series Through Drive Installation Options C1 Type SAE C SAE J T 12/24DP 1 SAE J T 12/24 DP 45 Φ M16 depth 24.5 Φ181 L2 L1 11 SAE J T 12/24 DP SAE J T 12/24 DP 45/ /14 Φ L1 M L2 depth Φ181 Φ C2 Type 14 L1 SAE C SAE L2 J T 12/24DP M16 depth24.5 Φ181 L2 L1 11 SAE J T 12/24 DP SAE J T 8/16 DP Φ M16 depth24.5 Φ L2 L1 Φ /6 4-M / SAE J L1 depth T 8/16 DP L Φ
43 Piston Pump HP3V Series Φ M16 depth24.5 Φ181 Hengli hydraulic 37 /4 Through Drive Installation Options 11 D1 Type 14 L1 L2 SAE D SAE J T 8/16DP SAE J T 8/16 DP 1 Φ M16 depth
44 38/4 Hengli hydraulic Piston Pump HP3V Series Size of Tandem pumps 1 1.pump 2.pump d a e c b f g Size of Tandem pumps 1.pump HP3V28 2.pump a b c d e f g HP3V HP3V45/6 HP3V HP3V45/ HP3V8 HP3V HP3V45/ HP3V HP3V125/14 HP3V HP3V45/ HP3V HP3V125/
45 Piston Pump HP3V Series Hengli hydraulic 39 /4 Setting of regulator and Max. displacement Setting control valve Adjustment screw for load sensing control Adjustment screw for pressure cut-off control Adjustment screw for pressure cut-off control Adjustment screw for load sensing control 1 HP3V28 Pump HP3V45-14 Pump size Approx. pressure change per rotate screw(bar) Pressure cut-off valve LS valve /6/ / Setting pressure at delivery: Pressure control : 32bar Differential pressure: 15bar Setting of Max. displacement Adjustment screw for max displacement size Approx. displacement change per revolution of screw (cc/rev) Min. setting of max. displacement (cc/rev) 28 Unadjustable max. displacement Setting displacement at delivery is maximum 39
46 4/4 Hengli hydraulic Piston Pump HP3V Series 1 4
47 1 /2 HP5V SERIES Swash-plate Type Axial Piston Variable Displacement Pump HP5V series piston pump is high pressure open circuit axial piston pump specially designed with a new structure, and has lighter weight, higher power density, and longer life compared with HP3V pump. Apply to open hydraulic circuit Displacements 45cc/rev, 7cc/rev, 76cc/rev, 85cc/rev Rated pressure 32bar, Peaking pressure 35bar. Contents Technical Data 2 Type introduction 3-5 Regulators introduction 6-1 Installation size HP5V76/85 Installation size Priority selection of spline shaft or straight shaft 14 Through Drive Installation Options Features Variable pump in swash-plate design for open circuit. High continuous pressure. Exceptional self-priming capability. Available with American (SAE) and Japanese (JIS) mounting flanges and shafts. Excellent reliability and long life. High power to weight ratio. Variety of control options. Optional through drive. Quick control response. Low pressure pulsation and low noise. Developed for engineering, mobile vehicles, Industrial and other industrial application. 41
48 2/2 Hengli hydraulic Piston Pump HP5V Series Technical Data Size Displacement (cc/rev ) Pressure Rated (bar) Peak Rotation speed (rpm) Max for self-priming *1 Max *2 Weight (Kg) Quantity of oil to fill pump case (L) Input torque rating (Nm) Temperature Range ( ) Viscosity Range (mm 2 /s) HP5V45* HP5V6* HP5V ~ *3 (The best use of viscosity range 16~36 mm 2 /s) HP5V Steady state suction pressure should be MPa and above(at normal condition); 2 If suction pressure less than bar, Boost pressure should be required; 3 In case of 2-1mm 2 /s, please allow system to warm up before using machine. *Note: HP5V45 and HP5V6 is under development. 42
49 Piston Pump HP5V Series Hengli hydraulic 3 /2 Type introduction HP5V 76 / A V 1 O R B2 S1 M S L1/1 D 2 T Product series 1 Product series HP5V Displacement 2 Displacement cc/rev Design series 3 Design series A Series A Seals 4 Seals FKM ( Viton rubber: DIN ISO 1629) NBR (Nitrile rubble :DIN ISO 1629) V N Hydraulic circuit 5 Hydraulic circuit Open circuit 1 Through Drive Code Without through drive O Standard configuration with gear pump 6cc/rev X1 Standard configuration with gear pump 1cc/rev X2 Mounting Flange Spline shaft SAE A 82-2 SAE J T 16/32DP A1 SAE J T 16/32DP A2 SAE B 11-2 SAE J T 16/32DP B1 SAE J T 16/32DP B2 SAE J T 12/24DP C1 SAE C SAE J T 12/24DP C2 43
50 4/2 Hengli hydraulic Piston Pump HP5V Series Type introduction Direction of Rotation 7 Viewed on drive shaft Clockwise Counter-clockwise R L Input Mounting flanges 2 8 Mounting flanges size Code SAE B 11-2 B2 SAE C C2 SAE C C4 ISO 319/2-1A2HW I1 ISO 319/2-125A2HW I2 Input Shaft Shaft size Code SAE J T 16/32DP S1 9 SAE J T 16/32DP S2 SAE J T 12/24DP S3 SAE J B straight shaft K2 SAE J B straight shaft K3 Thread type of Flange Fixing Port 1 Thread type Metric threads UNC threads M S Connection type (except inlet and outlet port) 11 UNC port, ISO BSPPG thread, JIS B2351 Metric port, ISO 9974 A G M 44
51 Piston Pump HP5V Series Hengli hydraulic 5 /2 Type introduction Control type Control type Code Cover plate, apply to constant displacement pump N 12 Pressure cut-off Only pressure control DR +Load sensing L1 Remotely operated+ Load sensing P Pressure cut-off+ Load sensing L1/1 Remotely operated+ Load sensing P/1 Power Control Electrically (negative control) +Pressure cut-off+ Load sensing L1/1-E 2 Hydraulic control + Pressure cut-off + Load sensing L1/1-H Connector for solenoids Connector for solenoid Code Without solenoid Blank 13 AMP Junior timer; 2 contact pin, (without suppressor diode) Deutsch DT4-2P ; 2 contact pin, (without suppressor diode) A D Input Voltage 14 Without solenoid Blank 12VDC 1 24VDC 2 Application Conditions Application Code 15 Apply to excavator T Other mobile machinery, construction machinery, Blank industrial application Remark: = available; = On request; 45
52 6/2 Hengli hydraulic Piston Pump HP5V Series Regulators introduction Code: L1(DR) PL 2 Control Type : Function and Features: 1. Load sensing Standard setting: 15bar Adjustment range: 1bar-21bar 2. Pressure Cut-off Standard setting: 32bar Adjustment range: 21bar-32bar PL Pump flow Pressure Load sensing + Pressure Cut-off The load sensing control is a flow control option that operates as a function of the load pressure to regulate the pump displacement to match the actuator flow requirement. The load sensing control compares pressure before and after the sensing orifice and maintains the pressure drop across the orifice (differential pressure Δp) and with it the Dr pump flow constant. If the differential pressure Δp increases, the pump is swivelled back (towards Vmin), and if the differential pressure Δp decreases, the pump is swivelled out (towards Vmax) until the pressure drop across the sensing orifice in the valve is restored. Δp=Pp-Pa Pump displacement is controlled to match the flow requirement as a function of the system differential pressure(load pressure vs delivery pressure).in addition, there is a pressure cut off function incorporated into the control. The pressure cut off control keeps the pressure in a hydraulic system constant within its control range even under varying flow conditions. the variable pump only moves as much hydraulic fluid as is required by the actuators. if the operating pressure exceeds the set point set at the pressure control valve, the pump displacement is automatically swivelled back until the pressure deviation is corrected. "DR" control is on the basis of "L1" control, tighten the load sensitive valve adjust screw, and the load sensitive valve doesn't work. Pressure Pump flow L Cu Hydraulic Circuit: LS valve Pump flow Cut-off valve P PL Dr T2 LS valve T1 S Cut-off valve P T3 46 I1 Power valve
53 Piston Pump HP5V Series Hengli hydraulic 7 /2 Regulators introduction PL PL Code: P Pressure Control Type : 1. Load sensing Standard setting:15bar LS valve Adjustment range:1bar-21bar 2. Pressure Cut-off Standard setting:32bar Cut-off valve P Adjustment range:21bar-32bar Pump flow Pressure Function and Features: Dr P Pressure cut-off The Pressure Cut-off regulator monitors outlet pressure once the pressure reaches the cut-off setting, the pump will return to minimum displacement. T2 Remote Control The pump can be remotely controlled by connecting a relief valve to the PL T1 S port of the regulator. The pump can also be unload at a low pressure continue standby condition by using a solenoid valve. Dr 2 Pump flow Hydraulic Circuit: PL Pump flow I1 I2 I3 Pump flow Pressure LS valve Pressure Cut-off valve P Dr T2 PL T1 S PL LS valve LS valve H Model (Pi=MPa) Pr Cut-off valve Pr Cut-off valve P P P T T2 P PA Power valve Power valve T3 47 T3 S T2 T1
54 8/2 Hengli hydraulic Piston Pump HP5V Series Dr Regulators introduction T1 Code: /1 2 Control Type : 1. Load sensing Standard setting: 15bar Adjustment range: 1bar-21bar 2. Pressure Cut-off Standard setting: 32 bar Adjustment range: 21 bar-32 bar 3. Torque limiting Pump flow Pressure Pump flow Function and Features: _/1 Load Sense and Pressure Cut-off with Torque limiting The L1 control functions as previously noted. In response to a rise in delivery pressure the swash plate angle is decreased, restricting the input torque. This regulator prevents excessive load against the prime mover. The torque limit control module is comprised of two springs that oppose the spool force by the system pressure. By turning an outer and inner spring adjustment screw, the appropriate input torque limit can be set. PL PL Hydraulic Circuit: LS valve LS valve Pr Cut-off valve P Cut-off valve P T3 P T3 Power valve T Power valve S T2 T1 S T2 T1 T1 48
55 Piston Pump HP5V Series T2 Hengli hydraulic Dr 9 /2 Regulators introduction T1 S Code: Control Type : Pump flow /1-E 1. Load sensing Standard setting:15bar Adjustment range:1bar-21bar 2. Pressure Cut-off Standard setting: 32bar Adjustment range: 21bar-32bar Pressure 3. Port Pr pressure: 2bar~45bar 4. Electromagnet characters Pump flow Pressure I1 I2 I3 2 Voltage(V) Current(A) Resistence(Ω) Insulation grade ±1%(2 ) H(18 ) ±1% UP to IP6K6/IPX9K 5. Connector (deutsch or Amp) DEUTSCH: DT4-2P-E5 AMP: , PL Function and Features: PL _/1-E Load Sense and Pressure Cut-off with Torque limiting The L1 control functions as previously noted. It controls the input torque of the pump by changing different current, specific current is related to LS certain valve input torque, thus satisfy needs of different torque on excavator LS valve Pr Cut-off valve PL Cut-off valve P P P T Hydraulic Circuit: LS valve PA T3 Power valve Pr Power valve Cut-off valve T3 T2 S T2 P T1 P T PA Power valve T1 T2 S T3 T1 S 49
56 1/2 Hengli hydraulic T2 Dr Piston Pump HP5V Series T2 Regulators introduction T1 S T1 S Code: /1-H 2 Control Type : Pump flow I1 1. Load sensing I2 Standard setting:15bar I3 Adjustment range:1bar-21bar 2. Pressure Cut-off Standard setting: 32bar Adjustment range: 21bar-32bar 3. Port Pr pressure: bar~39bar Pressure Pump flow H Model (Pi=MPa) L Model (Pi=3.5MPa) Function and Features: _/1-H Load Sense and Pressure Cut-off with Total torque limiting The L1 control functions as previously noted. It controls the input torque of the pump by changing different input pressure of port Pr, specific current is related to certain input torque, thus satisfy needs of different torque on excavator. PL PL PL Hydraulic Circuit: LS valve LS valve LS valve P Pr P Cut-off Prvalve P P T PA Power valve Cut-off valve T2 P T PA Power valve P Pr T2 Cut-off valve P T PA Power valve T2 T3 T3 T3 T1 S T1 S T1 S 5
57 Piston Pump HP5V Series Hengli hydraulic 11 /2 Installation size HP5V76/85 installation size HP5V76/85 with Cut-off/Load Sense Control with torque limit (Clockwise Rotation) For the CCW pump just reverse the inlet and outlet port. PL Pr Adjusting sleeve of torque limit control valve T Φ T2 Φ T Φ127 S LS adjustment screw Adjustment screw for pressure cut-off control Φ PL Pr Φ31.224h11 T P T Adjustment screw for mim displacement Port Details P S Port Name Working port Suction Port 1"SAE J518C Code 61 (5psi) 2"SAE J518C Code 61 (3psi) Port Size and Description M (metric) M1X1.5 (depth 17mm) S(UNC) 3/8 16UNC-2B (depth 17mm) M (metric) M12X1.75(depth 2mm) S(UNC) 1/2 13UNC-2B (depth 2mm) Tightening Torque (N-m) T1 T2 T3 Case drain Port SAE J1926/1 ( 3/4"-16UNF-2B) (depth 16 mm) 98 PL LS Control Port SAE J1926/1 ( 7/16"-2UNF-2B) (depth 11.5mm) 12 Pr Electronic control or Hydraulic control pilot SAE J1926/1 ( 7/16"-2UNF-2B)depth 11.5mm
58 12/2 Hengli hydraulic Piston Pump HP5V Series Installation size HP5V76/85 Mounting Flange SAE C 2 hole SAE J Φ SAE "C2" type Ø SAE "C4" type 52
59 Piston Pump HP5V Series Hengli hydraulic 13 /2 Installation size HP5V76/85 Input Shaft type Φ Φ SAE J T 16/32 DP SAE J T 12/24 DP "S2" type spline shaft "S3" type spline shaft Φ31.75 SAE J "K3" type straight shaft 53
60 14/2 Hengli hydraulic Piston Pump HP5V Series Priority selection of spline shaft or straight shaft Shaft code Size S3 SAE J T 12/24DP K3 SAE J B straight shaft 2 54
61 Piston Pump HP5V Series Hengli hydraulic 15 /2 Through Drive Installation Options A1 Type SAE A SAE J T 16/32DP SAE J T 16/32 DP 45 Φ16 Φ M1 depth 17 2 L L1 SAE J T 16/32 DP A2 Type L1 SAE A SAE J L2 11T 8 16/32DP 9.5 L1 L2 SAE J T 16/32 DP Disp.(cc/rev) SAE J /85 11T 16/32 DP L1 33 L2 M depth 17 Φ Φ M1 depth 17 Φ16 Φ16 Φ SAE J T 16/32 DP 45 M1 depth Φ16 L L1 Φ M12 depth 2 Φ146 L2 Disp.(cc/rev) 76/85 11 SAE J L1 L113T 16/32 DP 33 L2 253 SAE J T 16/32 DP Φ M12 depth Φ146
62 16/2 Hengli hydraulic L2 Φ L1 M1 depth 17 Piston Pump HP5V Series Through Drive Installation 8 Options 9.5 SAE J B1 Type L111T 16/32 DP L2 SAE B SAE J T 16/32DP Φ SAE J T 16/32 DP 45 M1 depth 17 Φ L L1 Φ M12 depth 2 L2 L1 SAE J T 16/32 DP Φ146 Φ Disp.(cc/rev) 11SAE J /85 15T 16/32 DP L1 M12 47 L2 depth Φ146 Φ B2 Type L1 L2 SAE B SAE J T 16/32DP SAE J T 16/32 DP 11 L1 L2 11 Φ M12 depth 2 45 M12 depth 2 Φ146 Φ146 L2 L1 11 Disp.(cc/rev) 76/85 L1 47 L
63 Piston Pump HP5V Series Hengli hydraulic 17 /2 Through Drive Installation Options C1 Type SAE C SAE J T 12/24DP SAE J T 12/24 DP 45 Φ M16 depth 24.5 Φ181 2 L2 L Disp.(cc/rev) 76/85 L1 53 L
64 18/2 Hengli hydraulic Piston Pump HP5V Series 2 58
65 Piston Pump HP5V Series Hengli hydraulic 19 /2 2 59
66 2/2 Hengli hydraulic Piston Pump HP5V Series 2 6
67 1 /8 HP SERIES Caution for using Contents 1. Mounting Direction and Drain Piping Filtration 4 3. Connection of driving shaft 5 4. Fluid 6 5. Starting 6 6. Case drain pressure 7 61
68 15 mes 2/8 Hengli hydraulic Piston Pump HP Series Caution for using 1. Mounting Direction and Drain Piping Installation Type 1: Horizontal Installation Caution: 1) Mount the pump with shaft directed horizontal; 2) The drain piping must be arranged above the top of the pump case and led to tank directly; 3) The upper drain port should be used, and the drain piping size must be equal to or larger than the drain port size ; 3 4) The suction line must be arranged above the top of the pump case between the pump and oil tank. Maximum mounting height above the oil level is 1m and suction pressure should be -.1MPa and above. Sketch Diagram: Within 1m Min. oil level Dr1 T1 Engine Dial gauge(reading a δ =a/2 T2 Engine Φ 62 Dial gauge(reading b α=sin -1 (b/d)
69 Piston Pump HP Series Hengli hydraulic 3 /8 Caution for using 1. Mounting Direction and Drain Piping Installation Type 2: Vertical installation 1 Installation within a tank Caution: Open the drain port and the air bleeder plug port. Min. oil level Sketch Diagram: Dr1 T1 15 T2 3 Engine Installation Type 2: Vertical installation 2 Installation outside a tank Dial gauge(rea δ =a/2 Caution: 1) Pipe the drain port and the air bleeder plug port to tank; Engine 2) If the pipe for draining or air bleeding is upper than the oil level (figure (a) below), the pipe should be filled with oil before starting the pump Dial gauge(rea α=sin -1 (b/d) Pipe for air bleeding Sketch Diagram: (a) Pipe for draining (b) max: 4bar P normal: 1bar 63
70 4/8 Hengli hydraulic Piston Pump HP Series Caution for using 2. Filtration Caution: 1 ) For satisfactory service life of these pumps in application, the operating fluid should be continuously filtered to keep at least the cleanliness level ISO/DIS 18/15 or NAS1638 Class9; 2) A 1μm-filter must be used in the return circuit and an 8~15-mesh strainer in the suction circuit. 3 Sketch Diagram: 1μm 15 mesh 64
71 Piston Pump HP Series Hengli hydraulic 5 /8 Caution for using 3. Connection of driving shaft Caution: 1) Use a flexible coupling for connection of the pump drive shaft with an engine flywheel; 2)Alignment should be so carried out that the parallel error may be held within ±.25mm; 3)Do not put radial or axial load at the shaft end; 4) Use screws and thread for fixing the coupling without hammering ; 5) The acceptance standard of alignment Parallel misalignment δ.25mm (Dial gauge reading a= below.5mm)angular misalignment α.2deg 3 Engine a Pump Sketch Diagram: Dial gauge(reading a) δ =a/2 b Engine ΦD α Pump Dial gauge(reading b) α=sin -1 (b/d) 65
72 6/8 Hengli hydraulic Piston Pump HP Series Caution for using 4. Fluid Caution: It is recommended to use the anti-wear type hydraulic fluid as mineral oil type when the pressure is higher than 2.6MPa. 5. Starting 3 Caution: 1) Before starting-up, fill the pump case with system fluid through the case drain connection. Case must remain full of fluid to provideinternal lubrication; 2) At starting, the hydraulic circuit should be in the unload condition. 66
73 Piston Pump HP Series Hengli hydraulic 7 /8 Caution for using 6. Case drain pressure Caution: Please be careful so that the drain pressure in the casing does not exceed.1 bar normally and.4 bar at its peak. A suitable size of drain hose and drain filter should be selected. Sketch Diagram: max: 4bar normal: 1bar P 3.1S t 67
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