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CASAPPA
PLATA [LVP 04 T A ]

PLATA [LVP 04 T A ]

Product catalog summary

Features:
The LVP series pumps are variable displacement axial piston pumps with a swash plate design, suitable for medium and high-pressure open circuit applications. They offer various control options for displacement regulation and can handle both radial and axial loads. The pumps can be configured for multiple hydraulic systems through a through-drive option.

Technical Specifications:
- Displacement: 14 cm³/rev to 87.9 cm³/rev
- Maximum Pressure: Continuous 280 bar, Intermittent 315 bar, Peak 350 bar
- Maximum Speed: 3000 min⁻¹
- Applications: Mobile and industrial sectors including wheel loaders, excavators, and hydraulic presses.

Mounting Positions:
The pump can be mounted horizontally or vertically, ensuring the highest case drain port is used to maintain required oil filling. It can be positioned above or below the oil level with specific recommendations to minimize noise and ensure optimal performance.

Operating Instructions:
Warm up the oil before starting to prevent cavitation. Start the pump at minimum speed and pressure, gradually increasing as the system reaches operational temperature. Ensure all connections are secure and the system is free of air.

Hydraulic Fluid and Filtration:
Use mineral oil-based hydraulic fluid conforming to DIN 51524. Optimal fluid viscosity is between 15 and 35 cSt. Filtration is critical, with specific contamination classes recommended based on working pressure.

Technical Data:
Specifications for different pump types (LVP 30, LVP 48, LVP 75, LVP 90) include maximum displacement, pressure, speed, and power. The document also outlines the impact of different hydraulic fluids on performance and bearing life.

Installation Guidelines:
Ensure proper alignment and secure connections to reduce shaft loads and prevent leaks. The suction line should maintain a pressure of at least 0.8 bar to avoid performance issues.

Additional Considerations:
For very low temperatures, specific measures are recommended to prevent cavitation. The direction of rotation must match the prime mover, and the system should be designed to prevent fluid aeration.

Displacement Settings:
Displacement settings for LVP models 30, 48, 75, and 90 are outlined. Maximum displacement ranges from 20.1 cm³/rev to 87.9 cm³/rev, with adjustments made via a screw.

Center of Gravity:
Center of gravity measurements for each LVP model are provided, crucial for understanding load moments on the mounting flange.

Operating Curves:
Operating curves for each LVP model show delivery/power, volumetric efficiency, and overall efficiency at maximum displacement.

Ports and Dimensions:
Detailed dimensions for side and rear ports are provided for each LVP model, including nominal sizes and tightening torques.

Drive Shafts and Mounting Flanges:
Information on drive shafts and mounting flanges is included, detailing compatibility and specifications according to SAE and ISO standards.

Pressure Compensators:
Pressure compensators RP0 and RP1 regulate pump displacement to maintain pressure below pre-adjusted limits.

Flow Compensator (Load-sensing) LS:
The flow compensator maintains a constant pressure drop across a flow metering device.

Torque Limiter RN:
The torque limiter regulates pump displacement to maintain a pre-adjusted torque value, protecting the prime mover from overload.

Unloading Valve U:
The unloading valve is used to reset displacement and unload the pump, compatible only with the pressure compensator RP.

Digital Integrated Drivers DES:
These drivers provide closed-loop control of pressure, flow, and power limitation.

Multiple Pumps Through Drive:
The LVP through drive axial piston pumps can supply multiple hydraulic systems, emphasizing not exceeding maximum transmissible torque and rotational speed.

Intermediate Flanges:
Specifications for intermediate flanges for various LVP models are provided.

Front Section Kit Cover:
The kit cover allows for the conversion of multiple pumps into single pumps.

Overview:
The document provides technical specifications and ordering instructions for the LVP series of variable displacement axial piston pumps.

Specifications:
Lists various pump types with their maximum displacement and rotation options.

Mounting and Ports:
Mounting flange options include SAE and ISO standards with specific hole configurations.

Seals and Regulators:
Seals are available in Buna and Viton. Regulators include pressure compensators, flow compensators, torque limiters, and unloading valves.

Ordering Instructions:
Detailed instructions for ordering single and multiple pumps are provided.

Additional Information:
Mentions the availability of intermediate flanges and couplings, with a note on continuous improvement policy.

Catalog excerpts

Headquarters: CASAPPA S.p.A. Via Balestrieri, 1 43044 Lemignano di Collecchio Parma (Italy) Tel. (+39) 0521 30 41 11 Fax (+39) 0521 80 46 00 IP Videoconferencing E-mail: [email protected] www.casappa.com VARIABLE DISPLACEMENT AXIAL PISTON PUMPS LVP SERIES

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INDEX Page Modification from former edition.

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Variable displacement axial piston pumps with swash plate design. LVP pumps are ideally suited for medium and high pressure open circuit applications. They are available with a wide range of control options to regulate the pumps displacement. The drive shaft is designed for both radial and axial loads. The pumps are also available with a through drive option to have multiple pumps able to supply several hydraulic systems. TIPICAL APPLICATIONS • Wheel Loaders-Backhoe Loaders • Midi-Excavators • Asphalt Pavers • Telehandlers • Windmills-Green Energy • Hydraulic Presses • Hydraulic Power Units •...

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DIRECTION OF ROTATION Clockwise or anti-clockwise defined looking at the drive shaft. HYDRAULIC FLUID Mineral oil based hydraulic fluid conforming to DIN 51524, fire resistant fluids and biodegradable fluids according to the technical data shown in the tables at pages 4 -e 6. The system should be designed to prevent aeration of the hydraulic fluid. FLUID VISCOSITY The fluid viscosity range for optimal use of LVP pump is between 15 and 35 cSt (77 and 163 SSU). Functional limit conditions are: max.: 1500 cSt (6818 SSU) at start up at -25 °C (-13 °F) with straight and short inlet line. min.: 10...

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MOUNTING POSITIONS Standard pump is supplied with the D2 drain hole open and D1 plugged. Before installation fill the pump with hydraulic oil for at least 3/4 of the volume keeping it in horizzontal position. The pump can be mounted in a horizontal or vertical position. The highest of the case drain ports must be used to keep the required filling oil. If D2 is not the highest drain port it must be closed by moving the plug from D1 hole chosen for the drain line. The pump can be located above the oil level if the absolute pressure at the inlet port stays within the stated limits. With exception...

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3 CASAPPA FLUID POWER DESIGN (1) = with an inlet pressure of 1 bar abs (14.5 psi). Reducing the displacement or increasing the inlet pressure the max. speed change. See table at page 7 For different working conditions, please consult our technical sales department.

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FLUID POWER DESIGN TECHNICAL DATATechnical data restrictions with fire resistant fluid O (1) = with an inlet pressure of 1 bar abs (14.5 psi). Pump type

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(1) = with an inlet pressure of 1 bar abs (14.5 psi).

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Design calculations for pump O 04/04.2013 Replaces: 03/01.2007 nhm= nhm (V, Ap, n) Hydro-mechanical efficiency Max. permissible load on drive shaft Pump type Frad Radial force % Variation of the max. speed in relation of the inlet pressure and/or displacement reduction Inlet pressure Example 1 Displacement: 100 % Speed: 100 % Inlet pressure: 1,0 bar abs. (14.5 psi) Example 2 Displacement: 80 % Inlet pressure: 1,0 bar abs. (14.5 psi) Speed: 115 %

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E: Max. displacement limiter F: Min. displacement limiter G: Min. and Max. displacement limiter Max. displacement setting range cm3/rev (in3/rev) Min. displacement setting range cm3/rev (in3/rev) One turn of screw changes pump displacement by approximately cm3/rev (in3/rev) from to from to E F Setting ranges with standard limiter. For different setting ranges, please consult our technical sales department. L |NT mm (in) values at page 41 For single pumps refer to ori L CG2 values Values shown in the table are indicative only. For real values please consult our technical sales department....

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OPERATING CURVES Each curve has been obtained at 50 °C (122 °F), using oil with viscosity 46 cSt (210 SSU) at 40 °C (104 °F) and at these speed: (1) 1500 min-1 (2) 1800 min-1 O (3) 3000 min-1 Delivery / power Noise level Distance from microphone to pump = 1 m (39.37 in) Overall efficiency Volumetric efficiency Values shown in the diagrams are indicative only. Actual values may vary depending on the pump configuration. DCAT037-001 ID02

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OPERATING CURVES Each curve has been obtained at 50 °C (122 °F), using oil with viscosity 46 cSt (210 SSU) at 40 °C (104 °F) and at these speed: (1) 1500 min-1 (2) 1800 min-1 O (3) 2600 min-1 Noise level Delivery / power Distance from microphone to pump = 1 m (39.37 in) Overall efficiency Volumetric efficiency Values shown in the diagrams are indicative only. Actual values may vary depending on the pump configuration. 10

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Delivery / power @ max. displacement Noise level Distance from microphone to pump = 1 m (39.37 in) - @ max. displacement---@ min. displacement Overall efficiency @ max. displacement Volumetric efficiency @ max. displacement Values shown in the diagrams are indicative only. Actual values may vary depending on the pump configuration.

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Each curve has been obtained at 50 °C (122 °F), using oil with viscosity 46 cSt (210 SSU) at 40 °C (104 °F) and at these speed: (1) 1500 min-1 Delivery / power @ max. displacement Noise level Distance from microphone to pump = 1 m (39.37 in) - @ max. displacement---@ min. displacement Volumetric efficiency @ max. displacement Overall efficiency @ max. displacement Values shown in the diagrams are indicative only. Actual values may vary depending on the pump configuration.

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,VP FLUID POWER DESIGN LV P Drive shafts: page 19 * 20 Mounting flanges: page 21 * 22 Screws tightening torque Nm (Ibf in) Ports (nominal size)

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IVP FLUID POWER DESIGN LV P Drive shafts: page 19 4- 20 Mounting flanges: page 21 4 22 O 04/04.2013 Replaces: 03/01.2007 Screws tightening torque Nm (lbf in) Ports (nominal size)

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,VP FLUID POWER DESIGN LV P Drive shafts: page 19 * 20 Mounting flanges: page 21 * 22 Screws tightening torque Nm (Ibf in) Ports (nominal size)

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IVP FLUID POWER DESIGN LV P Drive shafts: page 19 4- 20 Mounting flanges: page 21 4 22 Screws tightening torque Nm (lbf in) Ports (nominal size)

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