PLP20.25S0-54B2-LBE/BC-N-EL-FS Casappa Gear Pump 26.42cc

Product Overview

The PLP20.25S0-54B2-LBE/BC-N-EL-FS is a gear pump from the Italian Casappa POLARIS 20 series, with a displacement of 26.42 cm³/rev.

The POLARIS series represents over fifty years of Casappa experience in hydraulic component design and manufacturing. Engineered with an aluminum alloy housing and sleeve-bearing-supported gears, with front and rear covers in aluminum alloy, the pump delivers reliable performance, high efficiency, and durability. Every unit is manufactured to original equipment specifications, ensuring 100% drop-in interchangeability with genuine Casappa PLP20 series pumps without any system modifications. Each pump undergoes rigorous 100% simulated duty-cycle testing to validate pressure-flow-efficiency performance curves.

Brand Disclaimer: This product is a high-quality compatible replacement engineered for full interchangeability with Casappa original equipment. All Casappa brand names and model codes are referenced solely to indicate compatibility and interchangeability. This product is manufactured by an independent producer and is not an original Casappa product.

Technical Specifications 

• Model Code: PLP20.25S0-54B2-LBE/BC-N-EL-FS (Order No. 02004220)

• Brand Series: Casappa POLARIS 20 (Group 2)

• Product Type: External Gear Pump

• Displacement: 26.42 cm³/rev

• Continuous Operating Pressure: 170 bar

• Intermittent Operating Pressure: 190 bar

• Peak Pressure: 210 bar

• Maximum Speed: 2,500 rpm

• Minimum Speed: 500 rpm

• Rotation Direction: Counterclockwise (CCW / Left-hand) （Note: Right-hand version PLP20.25D0 also available）

• Mounting Flange: German standard (GER80-4), 4-bolt, pilot diameter 80 mm

• Mounting Bolt Spacing: 72 × 100 mm

• Drive Shaft: Tapered shaft 1:5, Ø 17 mm

• Inlet Port: German 4-bolt flange, Ø 40 mm / 4xM6

• Outlet Port: German 4-bolt flange, Ø 30–35 mm / 4xM6

• Housing Material: Aluminum alloy

• Front/Rear Cover Material: Aluminum alloy

• Seals: NBR (Nitrile rubber)

• Hydraulic Fluid: Mineral-based hydraulic oil

• Recommended Viscosity: 12 – 100 cSt

• Operating Temperature Range: -25°C to +80°C

• Maximum Contamination Level: ISO 4406 19/17/14

• Input Torque: 4 daNm

• Weight: Approx. 4.6 kg

• Filtration Rating: 10 – 25 μm

Key Technical Advantages

1. Lightweight Aluminum Alloy Construction

The high-strength aluminum alloy housing delivers a total weight of only approx. 4.6 kg—significantly lighter than cast iron equivalents. This substantial weight reduction makes it ideal for weight-sensitive mobile equipment and vehicle-mounted systems.

2. Sleeve Bearing-Supported Gears for Extended Durability

The gear pairs are supported by sleeve bearings, effectively reducing friction losses between gear shafts and housing while significantly enhancing bearing load capacity and service life—particularly suited for demanding long-term continuous operation.

3. German Standard Interface – 100% Drop-In Interchangeability

Featuring German standard (German standard) flanges and interfaces, with 4-bolt flange pilot diameter 80 mm and mounting bolt spacing 72 × 100 mm. Fully compliant with international interchange standards—delivers 100% drop-in interchangeability with genuine Casappa PLP20 series pumps.

4. Broad Speed & Temperature Operating Range

Supports a speed range of 500 to 2,500 rpm with operating temperatures from -25°C to +80°C. Maintains stable flow characteristics from low-speed precision control to high-speed continuous duty.

5. High Cleanliness Standards for Extended Service Life

Maximum allowable contamination level of ISO 4406 19/17/14 with recommended filtration of 10 – 25 μm. Strict cleanliness requirements ensure precision gear pairs and sleeve bearings maintain optimal performance throughout the pump’s service life.

6. 100% Simulated Duty-Cycle Testing

Every pump is 100% tested on dedicated hydraulic test benches under simulated real-world operating conditions—validating pressure-flow characteristics and efficiency curves at continuous pressure (170 bar), intermittent pressure (190 bar), and peak pressure (210 bar) across the full speed range—ensuring zero-defect, plug-and-play performance upon installation.

Application Areas

• Agricultural Machinery: Tractor hydraulic systems, combine harvester implement drives

• Construction Equipment: Mini-excavators, loader auxiliary hydraulic systems

• Material Handling Equipment: Forklifts, lift platform hydraulic systems

• Mobile Equipment: Aerial work platforms, street sweeper hydraulics

• Industrial Equipment: Injection molding machine power units, machine tool hydraulics

Expert Maintenance Tips

1. Fluid Cleanliness Control

Maintain system fluid cleanliness to ISO 4406 19/17/14 or better. Install a 10 – 25 μm absolute filtration filter upstream of the inlet port to prevent particle contamination from damaging precision gear pairs and sleeve bearings.

2. Inlet Line Requirements

Keep suction lines short and straight with adequate diameter—not less than the port size (inlet Ø 40 mm / 4xM6). Recommended suction line flow velocity: ≤1.5 m/s to prevent cavitation from excessive inlet resistance. Inlet pressure must be maintained between 0.8 – 2.0 bar (absolute) .

3. Coupling Alignment Precision

Ensure pump shaft-to-drive shaft coaxiality deviation ≤0.05 mm and angular deviation ≤0.5° during installation. Flexible couplings are strongly recommended. If the drive involves sprockets or V-belt pulleys, an independent outboard bearing MUST be installed to protect the pump shaft.

4. First-Start Priming Procedure

Before initial startup, prime the pump by bleeding air through the drain port or a loosened outlet fitting. Perform 2–3 jog starts with the outlet open (no load) until oil fills the pump cavity without air bubbles, then connect the load circuit for full operation.

5. Viscosity & Temperature Monitoring

Recommended operating viscosity: 12 – 100 cSt. During cold starts when viscosity exceeds the recommended range, ensure adequate suction conditions or preheat the fluid to prevent cavitation damage. Operating temperature range: -25°C to +80°C.

6. Rotation Direction Confirmation

This model (PLP20.25S0-54B2-LBE/BC-N-EL-FS) is standard configured for counterclockwise (CCW / left-hand) rotation. Always verify that the drive motor/engine rotation matches the pump before installation. Specify right-hand (CW) configuration by selecting the PLP20.25D0 variant if required.