K7VG
32Pages

Powering your potential Precision Machinery Company Swash Plate Type Axial Piston Pum

2-4. Bearing Life Data 11 2-5. Functional Description of Regulators 12 - 14 2-6. Horsepower Limiter Settings 15 3-4. Remote Pilot Function 29 3-5. Electric Flow Control 30

K7VG Series Swash-plate Axial Piston Pump ■ General Descriptions Reliable High-Pressure and Long-Life Type This series of high-pressure, swash-plate type pumps was developed for general industrial machinery use and is based upon our long and rich experience. The adoption of the high-load bearings and friction-free contacting mechanism of shoes has achieved high reliability and long life. Low Noise The unique compact and rigid housing construction in addition to the semi-cylindrical swash-plate and its anti-vibration supporting mechanism has both reduced noise and pressure pulsations High...

Ordering Code Tilt monitor & other accessories Blank Maximum Displacement With tilt monitor only Without tilt monitor only 1,000-1,200 rpm resonator & tilt monitor Viton Seals Throughout 1,500-1,800 rpm resonator & tilt monitor Water Glycol Hydraulic Fluid Type - Unload or remote control solenoid & electrical connections (1) Blank Through Drive & Porting Unload valve with 115V AC 50/60Hz DIN 43550 plug Open Circuit Without unload or remote control valve Circuit Type Unload valve with 230V AC 50/60Hz DIN 43550 plug Steel Cover, No Through Drive SAE-A Through Drive Unload valve with 12V DC...

Technical Information 2-1 Technical Data For applications outside the following parameters, please consult KPM UK. Hydraulic Data Pressure Fluid Mineral oil, polyol ester and water glycol. Use a high quality, anti-wear, mineral based hydraulic fluid when the pressure exceeds 206 bar. In applications where fire resistant fluids are required consult KPM UK. Fluid selection allowable temperature range 1000 fluid temperature (°C) Ideal working range

2-1 Technical Data (cont) Filtration & Contamination Control Filtration The most important means to prevent premature damage to the pump and associated equipment and to extend its working life, is to ensure that hydraulic fluid contamination control of the system is working effectively. Working Fluid Types Anti-Wear Type Hydraulic fluid It is generally recommended to use an anti-wear hydraulic fluid like mineral oil when the operating pressure exceeds 206 bar. Fire-resistant Fluids Some kind of fire-resistant fluids require special materials for seals, paint and metal finishing. Please This...

2-1 Technical Data (cont) Pump Start Up Precautions Pump Case Filling Be sure to fill the pump casing with oil through the drain port, filling only the suction line with oil is totally in sufficient. The pump contains bearings and high-speed sliding parts including pistons with shoes and spherical bushes that need to be continuously lubricated. Part seizure or total premature failure will occur very quickly if this procedure is not rigidly followed. Piping & Circuit Checking Check to see that the piping and full hydraulic circuit is completed and that any gate valves etc. are open....

2-2 Specifications For applications outside of the following parameters please contact KPM UK. Pump Model Maximum Self Priming Speed Maximum Boosted Speed

2-2 Specifications (cont) #1 Maximum allowable shaft torques are based on achieving an infinite life for a coupling assembly that is lubricated and completely clamped and utilises the full spline/key length as engagement. The following points therefore need to be fully considered:- i) Lubrication of shaft couplings should be in accordance with the coupling manufacturers instructions. ii) The maximum allowable input shaft torque is based on ensuring an infinite life condition by limiting the resultant combined shaft bending and torsional stress. iii) This allowable input shaft torque can be...

Pump Efficiency (%) Volumetric efficiency(%) Displacement ratio (q/qmax) Self Priming Capability Performance Note: All performance curves are based on the following conditions: • 1,800 rpm • ISO VG46 mineral oil • 50ºC oil temperature • Atmospheric inlet condition (0 bar)

2-3 Performance Data (cont) K7VG265 100 Pump Efficiency (%) Volumetric efficiency(%) Displacement ratio (q/qmax) Self Priming Capability Performance Note: All performance curves are based on the following conditions: • 1,800 rpm • ISO VG46 mineral oil • 50ºC oil temperature • Atmospheric inlet condition (0 bar)

Prime Mover Power (kW) Prime Mover Power (kW)

2-5 Functional Description of Regulator Boundary Control Code Control Type Control Curves Function & Features Horsepower control In response to a rise in delivery pressure, the pump’s displacement angle reduces such that its input torque is maintained essentially constant. This function prevents excessive load on the motor driving the pump. There is however no pressure Cut Off function. Be sure to install a safety valve in the circuit. Direct Acting Regardless of changes in flow demand, the pump outlet pressure is maintained constant. Be sure to install a safety valve in the circuit. P This...

2-5 Functional Description of Regulator (cont) Boundary Control + Load Sensing Code Control Type Horsepower Control Curves Function & Features Control with control (Type 1) to a load sensing compensator that can also remotely control the pump’s compensator pressure. This regulator adds the function of a Horsepower Load Sensing Be sure to install a safety valve in the circuit. This regulator provides the load sensing compensation Load Sensing Be sure to install a safety valve in the circuit. 2.5% 7 This regulator adds the function of a Horsepower Control with control (Type 1) to a load...

2-5 Functional Description of Regulator (cont) Flow Control Code Control Type Control Curves Function & Features The pump is supplied without any regulator fitted. The discharge flow however can be steplessly adjusted by manually turning adjustment screws on the pump. P Q Infinitely variable adjustment of pump displacement is Positive Flow possible by application of a hydraulic pressure signal. An increasing pilot pressure results in a proportionally increasing pump displacement. 2.5% 7 A 40 bar pilot pressure source needs to be provided. Infinitely variable adjustment of pump displacement...