PLP20.16DO-82E2-LEB/EA-N-EL | Casappa Gear Pump 16.3cc 250bar

Product Overview

The PLP20 Series Hydraulic Gear Pumps are a flagship product line of the Polaris series aluminum gear pumps from CASAPPA, the globally renowned Italian hydraulic manufacturer founded in 1952. The PLP20 series is widely used in forklifts, construction machinery, agricultural equipment, material handling, and industrial hydraulic systems.

The PLP20 series belongs to Group 2规格, featuring a high-strength extruded aluminum alloy body with compact construction, lightweight design, and excellent heat dissipation. Displacements range from 4.95 to 33.03 cm³/rev, with rated pressures up to 250 bar and peak pressures up to 315 bar.

The PLP20 series offers a wide range of shaft types, mounting flanges, and port configurations, including SAE, DIN, and European standards, ensuring broad compatibility. Configurations include single, tandem, and multiple pumps, with support for integrated pilot valves, relief valves, priority valves, and other control valves.

PLP20.16DO-82E2-LEB/EA-N-EL model code breakdown:

• PLP20: Polaris series, Group 2

• 16: Nominal displacement – 16.3 cm³/rev

• DO: Rotation direction – Clockwise (viewed from shaft end)

• 82E2: Shaft and flange configuration code

• LEB/EA: Port orientation and mounting interface specification

• N: Standard NBR seal

• EL: Additional configuration code

PLP20.6.3D0-95B6-L-OD/OC-V-EL model code breakdown:

• PLP20: Polaris series, Group 2

• 6.3: Nominal displacement – 6.3 cm³/rev

• D0: Rotation direction – Clockwise

• 95B6: Shaft and flange configuration code

• L: Rotation direction – Counter-clockwise (viewed from shaft end)

• OD/OC: Port orientation and mounting interface specification

• V: FKM seal

• EL: Additional configuration code

PLP20.4D0-31S1-LGD/GD-N-EL model code breakdown:

• PLP20: Polaris series, Group 2

• 4: Nominal displacement – 4.95 cm³/rev

• D0: Rotation direction – Clockwise

• 31S1: Shaft and flange configuration code

• LGD/GD: Port orientation and mounting interface specification

• N: Standard NBR seal

• EL: Additional configuration code

We specialize in the R&D and manufacturing of high-pressure pumps, motors, and valve groups. All PLP20 series models offer 100% direct interchangeability with original CASAPPA PLP20 series pumps of the same model—no modification required. Every unit undergoes 100% simulated load testing before shipment, ensuring performance validation under real-world operating conditions.

Technical Specifications 

PLP20 Series General Specifications:

• Brand Series: CASAPPA Polaris PLP20 Series

• Pump Type: External gear pump (aluminum body)

• Body Material: High-strength extruded aluminum alloy

• Body Construction: Three-piece construction

• Bearings: Sleeve bearings

• Group Size: Group 2

• Mounting Flanges: SAE, DIN, European standards

• Fluid Media: Mineral hydraulic oil

• Recommended Viscosity: 12 – 100 cSt

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

PLP20.16DO-82E2-LEB/EA-N-EL Specifications:

• Displacement: 16.3 cm³/rev

• Continuous Operating Pressure: 250 bar

• Intermittent Pressure: 280 bar

• Peak Pressure: 300 bar

• Maximum Speed: 3000 rpm

• Minimum Speed: 500 rpm

• Mounting: Rectangular flange for motor connection

• Rotation Direction: Clockwise (D designation)

• Seal Material: NBR (standard)

PLP20.6.3D0-95B6-L-OD/OC-V-EL Specifications:

• Displacement: Approx. 6.3 cm³/rev

• Continuous Operating Pressure: Approx. 250 bar

• Intermittent Pressure: 280 bar

• Peak Pressure: 300 bar

• Maximum Speed: Approx. 3000 – 4000 rpm

• Minimum Speed: Approx. 500 rpm

• Rotation Direction: Clockwise (D0 designation)

• Seal Material: FKM (V designation)

PLP20.4D0-31S1-LGD/GD-N-EL Specifications:

• Displacement: 4.95 cm³/rev

• Continuous Operating Pressure: 250 bar

• Peak Pressure: 315 bar

• Maximum Speed: 4000 rpm

• Rotation Direction: Clockwise (D0 designation)

• Seal Material: NBR (standard)

Note: Specifications above are based on CASAPPA PLP20 series official technical data and publicly available information. Different configuration codes correspond to different shaft types, flange specifications, and port configurations. Refer to the pump nameplate for exact specifications.

Key Technical Advantages

1. High-Strength Aluminum Alloy Body – Lightweight with Excellent Heat Dissipation

The PLP20 series features a high-strength extruded aluminum alloy body, achieving significant weight reduction while maintaining structural strength. The excellent thermal conductivity of aluminum alloy aids in pump body heat dissipation, reducing oil operating temperature and extending system service life.

2. Sleeve Bearings with Aluminum End Plates – High Load Capacity with Long Service Life

The PLP20 series utilizes sleeve bearings for gear support, combined with aluminum end plates, delivering excellent load capacity and wear resistance. The hydrodynamic lubrication characteristics of sleeve bearings ensure low friction and long service life under high pressure and high speed operation.

3. Three-Piece Compact Construction – Flexible Installation with Easy Maintenance

The PLP20 series features three-piece construction with a compact design and minimal installation space requirements. A wide range of standard shafts, flanges, and ports are available, including SAE, DIN, and European standards, ensuring broad compatibility with various industrial equipment.

4. Wide Displacement Coverage with Flexible Configuration Options

The PLP20 series covers displacements from 4.95 to 33.03 cm³/rev, offering a broad range of flow options. In addition to single pumps, the series supports tandem and multiple pump configurations, with integrated pilot valves, relief valves, priority valves, and other control valves—providing flexible solutions for complex hydraulic systems.

5. Excellent Pressure Capability with Low-Noise Operation

The PLP20 series delivers rated pressures up to 250 bar and peak pressures up to 315 bar. Optimized gear tooth profiles and precision machining ensure low-noise, low-pulsation operation even at high pressures.

Application Areas

• Forklifts—hydraulic lift and steering systems

• Construction Machinery—excavators, loaders, bulldozers hydraulic systems

• Agricultural Machinery—tractors, combine harvesters hydraulic systems

• Material Handling Equipment—warehousing and handling equipment hydraulic systems

• Industrial Hydraulic Systems—hydraulic power units, manufacturing machinery, automation equipment

• Mining Machinery—mining equipment hydraulic systems

• Building Machinery—concrete pump trucks, mixer trucks hydraulic systems

Expert Maintenance Tips

Model Code Verification (verify each element):

PLP20 series model codes contain critical information. Before selection and installation, confirm the following:

• PLP20: Polaris series, Group 2.

• Displacement numbers (e.g., 4, 6.3, 16, etc.) : Nominal displacement (cm³/rev) – note that 4 corresponds to 4.95 cm³/rev, 16 corresponds to 16.3 cm³/rev.

• Rotation direction (D / S, etc.) : D = Clockwise, S = Counter-clockwise (viewed from shaft end).

• Shaft and flange configuration (e.g., 82E2, 95B6, 31S1, etc.) : Corresponds to different shaft types and mounting flange specifications.

• Port configuration (e.g., LEB/EA, OD/OC, LGD/GD, etc.) : Corresponds to different port orientations and interface specifications.

• Seal material (N / V, etc.) : N = NBR, V = FKM.

• EL: Additional configuration code.

Verify Rotation Direction:

Confirm that the drive shaft rotation matches the direction code in the model – “D” indicates clockwise, “S” indicates counter-clockwise. Among this batch, PLP20.16DO and PLP20.4D0 are both clockwise (D designation), while PLP20.6.3D0 is clockwise but includes an “L” in the suffix indicating counter-clockwise rotation – verify the original pump nameplate carefully before installation. Incorrect rotation will prevent pressure build-up and may damage internal gears and bearings.

Mounting Flange and Drive Shaft Matching:

PLP20 series offers a wide range of SAE, DIN, and European standard mounting flanges and shaft options. Verify that the equipment-side flange type and shaft specification match the pump configuration before installation.

Suction Line and Fluid Requirements:

PLP20 series recommends hydraulic fluids meeting ISO/DIN standards, with recommended viscosity range of 12 – 100 cSt. Ensure the suction line is properly sealed with no air leaks and the suction filter is not clogged. Fluid temperature should be maintained within -25°C to +80°C.

First-Start Priming Procedure:

After new pump installation or system overhaul, ensure the pump cavity is filled with oil before first start. Jog the pump at low speed and low pressure until the pump body is fully filled with oil and air is purged, then gradually increase to rated speed and working pressure. Running the pump dry will cause irreversible damage to gears and bearings.

Oil Cleanliness and Regular Maintenance:

PLP20 series recommends oil cleanliness not lower than ISO 4406 19/17/14. Replace hydraulic oil and return filters every 1,000 operating hours or per equipment manufacturer recommendations. Regularly monitor pump body temperature—if it consistently exceeds +80°C, inspect the system cooling.