PLP20.14-03S1-LBE/BC/20.6.3-LBC-S7D Casappa Gear Pump 250bar

Product Overview

The PLP20.14-03S1-LBE/BC/20.6.3-LBC-S7D is a tandem external gear pump from the Casappa POLARIS 20 series. This configuration features two pump sections connected in series—a primary section with 14.53 cm³/rev displacement and a secondary section with 6.61 cm³/rev displacement. It belongs to the Group 20 platform.

The POLARIS series represents over fifty years of Casappa experience in hydraulic component design and manufacturing. Engineered with an aluminum alloy housing and floating bushings, the pump delivers stable flow, high efficiency, and low noise for both mobile and stationary hydraulic applications. As a tandem configuration, this pump delivers two independent oil flows from a single drive input, significantly simplifying hydraulic system architecture.

Every unit is manufactured to original equipment specifications, ensuring 100% drop-in interchangeability with genuine Casappa PLP20 series tandem pumps without any system modifications. Each pump undergoes rigorous 100% simulated duty-cycle testing on dedicated test benches 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: PLP20.14-03S1-LBE/BC/20.6.3-LBC-S7D

• Brand Series: Casappa POLARIS 20 (Group 20)

• Product Type: Tandem External Gear Pump

• Primary Section Displacement: 14.53 cm³/rev

• Secondary Section Displacement: 6.61 cm³/rev

• Total Displacement (Both Sections): 21.14 cm³/rev

• Continuous Operating Pressure: 250 bar

• Intermittent Operating Pressure: 280 bar

• Peak Pressure: 300 bar

• Maximum Speed: 3,500 rpm

• Minimum Speed: 500 rpm

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

• Mounting Flange Type: SAE “A” 2-bolt flange (S1 code)

• Mounting Flange Diameter: 82.55 mm

• Mounting Bolt Horizontal Spacing: 106.2 mm

• Drive Shaft Type: SAE “A” splined shaft (03 code), 9 teeth

• Drive Shaft Diameter: 15.5 mm

• Port Location: Side ports

• Inlet Port Type: German 4-bolt flange (20/LK40/M6)

• Outlet Port Type: German 4-bolt flange (15/LK35/M6)

• Housing Material: Aluminum alloy

• Flange & Cover Material: Aluminum alloy

• Seals: NBR (Buna / Nitrile rubber)

• Hydraulic Fluid: Mineral oil HLP

• Recommended Viscosity: 12 – 100 cSt

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

• Weight: Approx. 5.30 kg

Key Technical Advantages

1. Integrated Tandem Design for Simplified System Architecture

This product combines a primary section (14.53 cc) and secondary section (6.61 cc) into a single compact tandem unit, delivering two independent oil flows from a single drive input. This significantly simplifies hydraulic piping, saves installation space and cost—ideal for space-sensitive medium and small hydraulic equipment.

2. Lightweight Aluminum Alloy Construction

The high-strength aluminum alloy housing with floating bushings delivers excellent pressure containment at 250 bar continuous rating while significantly reducing overall weight (approx. 5.30 kg). Compared to cast iron equivalents, the weight reduction is substantial—making it ideal for weight-sensitive mobile hydraulic applications.

3. Floating Bushings for High Volumetric Efficiency

Floating bushings automatically compensate for gear end clearance under high pressure, significantly reducing internal leakage. Combined with precision-machined gear pairs, the pump delivers high volumetric efficiency and stable flow output across the full pressure range.

4. Broad Speed Operating Range

Supports a wide speed range of 500 to 3,500 rpm. Maintains stable flow characteristics whether operating at low-speed precision control or high-speed continuous duty—one pump for diverse application requirements.

5. International Standard Interface & Drop-In Interchangeability

Featuring SAE “A” 2-bolt flange (82.55 mm) and SAE “A” splined shaft (9 teeth, 15.5 mm), fully compliant with international interchange standards. Delivers 100% drop-in interchangeability with genuine Casappa PLP20 series tandem pumps—install directly with zero system modifications.

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

Application Areas

• Agricultural Machinery: Tractor dual-circuit hydraulic systems, combine harvester implement and steering synchronized drives

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

• Industrial Equipment: Injection molding machine hydraulic power units, metal forming dual-circuit supply systems

• Mobile Equipment: Aerial work platforms, forklift hydraulic systems

• Tandem Pump Applications: Systems requiring simultaneous independent hydraulic flow to two separate actuators or circuits (e.g., steering + implement, lift + tilt)

Expert Maintenance Tips

1. Inlet Line Requirements

Keep suction lines short and straight with adequate diameter—not less than the port size (inlet: 20/LK40/M6). Both inlet ports of the tandem pump must be supplied with sufficient flow independently to prevent cavitation from excessive inlet resistance. Recommended suction line flow velocity: ≤1.5 m/s.

2. Fluid Cleanliness Control

Maintain system fluid cleanliness to ISO 4406 19/17/14 or better. Install a ≤10 μm absolute filtration filter upstream of each inlet port to prevent particle contamination from damaging precision gear pairs and floating bushings.

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, bleed air through both outlet ports or drain ports separately. Perform 2–3 jog starts with outlets open (no load) until oil fills both pump sections without air bubbles, then connect load circuits 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. Recommended operating temperature range: -25°C to +80°C.

6. Rotation Direction Confirmation

This model is standard configured for right-hand (clockwise/CW) rotation. Always verify that the drive motor/engine rotation matches the pump before installation. Specify left-hand (CCW) configuration when ordering if required.