Product Overview
The PLP20.14DQ-82E2LGE/GD-NEI21/02 is a model of the Italian CASAPPA POLARIS (PL) series high-performance aluminum external gear pumps. CASAPPA is a globally recognized manufacturer of hydraulic gear pumps, and its PL series products are renowned for high-strength extruded aluminum housings, lightweight design, and modular multi-pump combination capabilities.
The PLP20 series belongs to the Group 20 specification within the CASAPPA POLARIS product line, with displacements ranging from 14.53 to 33.03 cc/rev. This model offers a theoretical displacement of 14.53 cc/rev, representing the base displacement specification in the PLP20 series. Featuring a three-piece high-strength extruded aluminum housing with precision-ground gears and reinforced floating bushings, the series delivers extremely high volumetric efficiency (≥93%) and low-noise operation (approx. 65 dB) while maintaining lightweight construction.
The PLP20.14DQ-82E2LGE/GD-NEI21/02 features European standard flange (E2) and European standard taper shaft 1:8 (82) configurations, with side-mounted BSPP threaded ports (suction 3/4″, pressure 1/2″). The “D” in the model code indicates clockwise rotation (viewed from the shaft end).
Engineered as a direct OEM-replacement solution for CASAPPA original products, this model fully complies with CASAPPA original design standards and European mounting interface specifications, offering 100% direct interchangeability with OEM pumps, and can perfectly replace MARZOCCHI, VIVOLO, Bondioli, and other同级 Italian brand gear pumps. Every unit undergoes 100% workload simulation testing prior to shipment, rigorously validating pressure retention, volumetric efficiency, and internal leakage performance to meet or exceed OEM standards.
Model Code Breakdown :
PLP — Series: CASAPPA POLARIS Aluminum Gear Pump
20 — Group: Group 20 (displacement 14.53–33.03 cc/rev)
14 — Displacement code: 14.53 cc/rev
DQ — Design sequence and configuration code
82 — Shaft type: European standard taper shaft 1:8
E2 — Flange type: European standard Group 2 flange
LGE/GD — Port position and type: Side ports (L), threaded connections (GE/GD)
N — Seals: NBR
EI21/02 — Special configuration and factory option code
Technical Specifications
Model: PLP20.14DQ-82E2LGE/GD-NEI21/02
Brand: CASAPPA (Italy)
Series: POLARIS PLP20 Aluminum Gear Pump
Group: Group 20
Theoretical Displacement: 14.53 cc/rev
Continuous Operating Pressure: 250 bar
Peak Pressure: 280–300 bar
Speed Range: 500 – 3500 r/min
Maximum Speed: 4000 r/min
Rotation Direction: Clockwise (D = right-hand, viewed from shaft end)
Mounting Flange: European standard Group 2 4-bolt flange, pilot diameter 36.5mm
Shaft Type: European standard taper shaft 1:8, diameter 16.65mm
Suction Port: BSPP female thread 3/4″ (side-mounted)
Pressure Port: BSPP female thread 1/2″ (side-mounted)
Port Position: Side-mounted
Seals: NBR (Perbunan)
Housing Material: High-strength extruded aluminum
Gear Material: Precision-ground alloy steel
Volumetric Efficiency: ≥ 93%
Noise Level: Approx. 65 dB
Key Technical Advantages
1. High-Strength Extruded Aluminum Housing – Lightweight & High Strength
The PLP20 series pump body is manufactured using high-strength extruded aluminum technology, delivering significant weight reduction (over 30% lighter than cast iron pumps) without compromising structural integrity. The three-piece modular construction ensures compact dimensions and flexible installation, making it particularly suitable for mobile hydraulic equipment with strict weight requirements.
2. High-Pressure Durability – 250 bar Continuous / 300 bar Peak
The PLP20 series delivers continuous operating pressure up to 250 bar with peak pressures of 280–300 bar. The combination of high-strength aluminum housing and precision-ground gears ensures long-term stability under high-pressure conditions. Wide oil temperature adaptability (-30℃ to +120℃) and wide viscosity range (10–2000 cSt) enable operation under various demanding conditions.
3. High Efficiency & Low-Noise Operation
Volumetric efficiency reaches 93% or higher. Optimized gear tooth profiles and precision fit effectively reduce internal leakage and energy losses. Operating noise is as low as approximately 65 dB, which is 5–10 dB lower than standard gear pumps.
4. Flexible Modular Multi-Pump Combination Capability
The PLP series supports single, tandem, and triple pump configurations with common suction or segmented oil supply options. Different displacement sizes within the same series can be flexibly combined to meet the multi-circuit oil supply requirements of complex hydraulic systems. Optional integrated valves include relief valves, check valves, and anti-cavitation valves to simplify system piping and valve block design.
5. Standard Interfaces – 100% Direct Interchangeability
Features European standard flange (E2) and European standard taper shaft 1:8 (82) configurations, with BSPP threaded ports. Fully interchangeable with MARZOCCHI, VIVOLO, Bondioli, and other同级 Italian brand gear pumps.
6. 100% Factory Tested
Every unit undergoes 100% workload simulation testing prior to shipment, covering pressure retention verification, internal leakage detection, and flow validation—ensuring every unit meets design performance standards.
Application Areas
The PLP20.14DQ-82E2LGE/GD-NEI21/02 gear pump is widely used in the following equipment and systems:
Construction Machinery: Small excavators, loaders, and other mobile machinery
Agricultural Machinery: Tractors, combine harvesters, sprayers, and agricultural equipment
Material Handling Equipment: Forklifts, lift platforms
Industrial Hydraulic Systems: Hydraulic power units (HPU), machine tool hydraulics
Special Vehicles: Aerial work platforms, municipal vehicles, fire trucks
Lifting & Transport Machinery: Cranes, lifting equipment
Expert Maintenance Tips
1. Model Confirmation
The PLP20.14DQ-82E2LGE/GD-NEI21/02 offers 14.53 cc/rev displacement within the PLP20 series. Before installation, confirm the correct displacement based on system flow requirements and verify the complete model code on the pump nameplate.
2. Rotation Direction Confirmation
The “D” in the model code indicates clockwise rotation (viewed from shaft end). Before installation, jog the motor to check rotation direction and verify that the PTO rotation matches the pump’s rotation direction—stop immediately if the direction is incorrect, as continued operation will cause pump failure to prime and may lead to severe damage to gears and bearings within a short period.
3. Installation Precautions
Thoroughly clean the European standard Group 2 4-bolt flange (pilot diameter 36.5mm) and taper shaft 1:8 (diameter 16.65mm) mating surfaces before installation to ensure no debris remains
Suction port: BSPP 3/4″, Pressure port: BSPP 1/2″
Use CASAPPA-specified torque values for mounting bolts—avoid over-tightening which may cause distortion of the aluminum housing
The suction line should be short and straight to avoid restrictions and bends, preventing cavitation
Use a flexible coupling for direct drive; pump and motor shaft coaxiality ≤ 0.1mm; avoid excessive radial or axial forces on the pump
4. First Start-Up and Bleeding
Before first start-up, must fill the pump with hydraulic oil through the inlet port—never start dry
During cold starts (oil temperature ≤ -20℃), warm up at low speed (≤1500rpm) and low pressure (≤50bar) before resuming normal operation above -20℃
After start-up, run at low speed with no load for 2–3 minutes to ensure complete air evacuation from the system
Check for abnormal noise or leakage—aluminum housing pumps are particularly sensitive to cavitation
5. Fluid and Filtration
Use high-quality anti-wear hydraulic oil compliant with DIN 51524 standards (HLP mineral oil)
Recommended viscosity: 12–100 cSt (higher viscosity acceptable for cold starts)
Maintain suction pressure ≥ 0.5 bar (absolute)
Oil temperature range: -30℃ to +120℃
Install 10μm filters on both suction and return lines
Maintain system oil cleanliness to ISO 4406 18/15 or better
6. Periodic Maintenance
Check mounting bolt torque every 1,000 operating hours
Regularly monitor system operating pressure—not to exceed 250 bar continuous (280–300 bar peak)
Regularly inspect shaft seals to prevent leakage
If flow output decreases, noise levels increase abnormally, or system temperature rises excessively, inspect and replace worn components promptly
