PLP20.6.3D0-02004638 Casappa Gear Pump 6.61cc 250bar

Product Overview

The PLP20.6.3D0-02004638 is an external gear pump from the Italian Casappa POLARIS 20 series, with a displacement of 6.61 cm³/rev. It belongs to the Group 20 platform. The full model code is PLP20.6,3D0-82E2-LEA/EA-N-EL-FS, corresponding to Casappa part number 02004638.

The POLARIS series represents over fifty years of Casappa experience in design and production of hydraulic components. Developed using 3D CAD and virtual simulation technologies, Polaris pumps consist of an aluminum alloy housing, two gear wheels supported by sleeve bearings and thrust plates, and front and rear covers.

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: PLP20.6.3D0-02004638 (Full: PLP20.6,3D0-82E2-LEA/EA-N-EL-FS)

• Casappa Part Number: 02004638

• Brand Series: Casappa POLARIS 20 (Group 20)

• Product Type: External Gear Pump

• Displacement: 6.61 cm³/rev

• Continuous Operating Pressure: 250 bar

• Maximum Operating Pressure: 280 bar

• Peak Pressure: 300 bar

• Maximum Speed: 4,000 rpm

• Minimum Speed: 600 rpm

• Rotation Direction: Right-hand (Clockwise / CW) 

• Shaft Type: European standard 1:8 tapered shaft (code 82)

• Shaft Keyway: 3.2 mm

• Mounting Flange: European standard E2 flange, 4-bolt, pilot diameter 36.5 mm

• Mounting Bolt Spacing: 96 × 72 mm

• Port Location: Side ports

• Inlet Port Type: EU30 (European standard flange, 30 mm bolt circle)

• Outlet Port Type: EU30 (European standard flange, 30 mm bolt circle)

• Housing Material: Aluminum alloy

• Cover Material: Aluminum alloy

• Seals: NBR (Perbunan / Nitrile rubber)

• Hydraulic Fluid: Mineral oil HLP

• Recommended Viscosity: 12 – 100 cSt

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

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

• Maximum Input Torque: 14 daNm

• Net Weight: Approx. 2.30 kg

• Gross Weight: Approx. 2.70 kg

• Country of Origin: Italy (ITA)

Key Technical Advantages

1. Aluminum Housing with Sleeve Bearings – Lightweight & Durable

The high-strength aluminum alloy housing with gear wheels supported by sleeve bearings delivers a total net weight of only approx. 2.30 kg. Sleeve bearings effectively reduce friction losses while significantly enhancing bearing load capacity and service life.

2. High-Pressure Rating – Industrial-Grade Durability

Rated continuous pressure of 250 bar, maximum pressure of 280 bar, and peak pressure up to 300 bar. Far exceeding standard gear pump pressure ratings, the aluminum alloy housing with precision sealing ensures long-term reliability under high-pressure, high-frequency, continuous-duty operations.

3. High-Speed Capability – Ideal for Compact Applications

Maximum speed of 4,000 rpm, supporting a wide speed range of 600 to 4,000 rpm. Particularly suitable for mini hydraulic power units, control circuits, and vehicle-mounted auxiliary equipment requiring compact, high-speed operation.

4. European Standard Interface – 100% Drop-In Interchangeability

Featuring European standard 1:8 tapered shaft (code 82) and E2 flange (pilot diameter 36.5 mm). Fully compliant with international interchange standards—delivers 100% drop-in interchangeability with genuine Casappa PLP20 series pumps.

5. High Cleanliness Standards for Extended Service Life

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

6. Low-Noise Design – Ideal for Sensitive Environments

The POLARIS series is optimized for low-noise operation, making it particularly suitable for noise-sensitive working environments such as cab-near installations, indoor industrial equipment, and urban operation machinery.

7. 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 (250 bar), maximum pressure (280 bar), peak pressure (300 bar), and full speed range—ensuring zero-defect, plug-and-play performance upon installation.

Application Areas

• Mini Hydraulic Power Units: Compact hydraulic power stations

• Control Circuits: Pilot control and auxiliary hydraulic circuits

• Agricultural Machinery: Tractor auxiliary hydraulic systems, implement hitch control

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

• Material Handling Equipment: Forklifts, lift platform hydraulic systems

• Mobile Equipment: Aerial work platforms, vehicle-mounted auxiliary hydraulics

• Industrial Equipment: Press hydraulic systems, 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 EU30). 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. Operating temperature range: -25°C to +80°C.

6. Rotation Direction Confirmation

The D0 code in this model indicates right-hand (clockwise / CW) rotation. Always verify that the drive motor/engine rotation matches the pump before installation. Specify left-hand (CCW) configuration by selecting the S0 variant if required.