Precision Machinery Company Swash-plate Axial Piston Pump

2-4. Radial Loading Capacity 18 2-5. Functional Description of Regulator 19 - 23 2-6. Torque Limiter Settings 24 - 25 3-7. Electric Displacement Control 63 - 64

K3VL Pumps are available in nominal displacements ranging from 28 to 200 cm3/rev with various pressure, torque limiter, and a combination of load sensing control options. ■ General Descriptions The K3VL Series Swash Plate Type Axial Piston Pumps are designed to satisfy the marine, mobile and industrial markets industrial machinery market where a medium/high pressure variable displacement pump is required. 320 Bar Continuous Pressure Rating (250 bar for K3VL60) High Overall Efficiency (>90% peak) Exceptional Self Priming capability Excellent Reliability and very long Service Life High Power to...

Ordering Code 1-1 Pump OptionsK3VL 80 0 /B - 1 0 R S S - LO 0 /1-H1 K3VL Series Pump- Maximum Displacement

Regulator Type

Technical Information 2-1 Technical Data For applications outside the following parameters, please consult KPM UK. 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 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. This begins by ensuring that at the time of installation that all piping, tanks etc. are rigorously cleaned in a sanitary way. Flushing should be provided using an off line filtration system and after flushing the filter elements should be replaced. The relationship between contamination level and pump life is...

Be sure to fill the pump casing with clean hydraulic 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. Check to see that the piping and full hydraulic circuit is completed and that any gate valves etc. are open. Check to ensure that direction of rotation is correct and that the inlet and delivery lines...

1: The instant allowable surge pressure as defined by DIN24312. Life and durability of the pump will be affected. *2 : Steady state inlet pressure should be greater or equal to 0.9 bar absolute. *3 : Steady state inlet pressure should be greater or equal to 1.3 bar absolute. The maximum boost pressure should not exceed 10 bar. *4 : SAE E through drive uses the SAE D shaft.

The shaft surface will have a finite life due to wear unless adequate lubrication is provided. #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...

Pressure at which life and durability will not be affected. The instant allowable surge pressure as defined by BS ISO 2944:2000. Life and durability however will be shortened. Values are valid for an absolute suction pressure of 0.9 bar. If the flow is reduced and the inlet pressure is increased the speed may also be increased. Values stated are the absolute maximum permitted speed for which an increased inlet pressure will be required. Approximate dry weights, dependant on exact pump type. Mineral anti wear hydraulic fluid - for other fluid types please consult KPM UK. If viscosity is in range...

2-3 Performance DataK3VL28♦ Pump Efficiency (%) ♦ Self Priming Capability inlet pressure (bar) Volumetric efficiency(%) Performance Note: All performance curves are based on the following conditions: • Atmospheric inlet condition (0 bar)

2-3 Performance Data (cont) K3VL45 ♦ Pump Efficiency (%) ♦ Self Priming Capability Performance Note: All performance curves are based on the following conditions: • Atmospheric inlet condition (0 bar)

2-3 Performance Data (cont)K3VL60♦ Pump Efficiency (%) Performance Note: All performance curves are based on the following conditions: • Atmospheric inlet condition (0 bar)

2-3 Performance Data (cont)K3VL80♦ Pump Efficiency (%) Performance Note: All performance curves are based on the following conditions: • Atmospheric inlet condition (0 bar)

2-3 Performance Data (cont)K3VL112♦ Pump Efficiency (%) Performance Note: All performance curves are based on the following conditions: • Atmospheric inlet condition (0 bar)

2-3 Performance Data (cont)K3VL140♦ Pump Efficiency (%) Performance Note: All performance curves are based on the following conditions: • Atmospheric inlet condition (0 bar)

2-3 Performance Data (cont)K3VL200♦ Pump Efficiency (%) Performance Note: All performance curves are based on the following conditions: • Atmospheric inlet condition (0 bar)

No axial shaft loading possible, radial loading is achievable but in specific orientation:- Radial shaft loading can be allowed provided that its orientation is such that the front bearing takes the additional load (See diagram below). Note: In this case bearing life will be reduced.

2-5 Functional Description of Regulator Key to Hydraulic Circuit Annotations Regulator Code Control Curves Hydraulic Circuit L0/L1 Load Sense and Pressure Cut-off 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. With the LI option,the bleed-off orifice R4 is plugged. LN Load Sense and Pressure Cut-off with Integrated Unloading Valve (Normally Closed) An integrated unloading valve is sandwiched between the Load Sense...