SNP2NN/025LN03CAP3F6F5NNNN/NNNNN Danfoss Hydraulic Gear Pump 25cc 160bar

Product Overview

The SNP2NN/025LN03CAP3F6F5NNNN/NNNNN is a Danfoss SNP2NN Series (Group 2) aluminum-bodied fixed displacement external gear pump. Originally part of the Sauer-Danfoss and Turolla product lines, it now belongs to the Danfoss GearMe product family.

The SNP2NN Series features a high-strength extruded aluminum body, cover, and flange, delivering an optimal balance of lightweight construction and structural robustness. The pressure-balanced design ensures sealing pressure automatically adapts to operating conditions, improving overall efficiency and minimizing energy consumption. The SNP2NN Series offers 9 displacement options ranging from 3.9 to 25.2 cc/rev. The 025 displacement (25.2 cc/rev) is the largest displacement option in the series, with a rated pressure of 160 bar and maximum speed of 3,000 rpm.

As an original specification model within the Danfoss SNP2NN line, this product enables direct form-fit-function interchangeability with original Danfoss/Turolla units—no modifications to piping or mounting interfaces required. Our replacement solution strictly adheres to Danfoss technical standards and undergoes 100% simulated in-service testing to ensure performance, reliability, and service life identical to OEM products. It is the ideal choice for hydraulic system maintenance and upgrades in agricultural machinery, construction equipment, and industrial applications.

Technical Specifications 

Applicable Model (Primary):

• SNP2NN/025LN03CAP3F6F5NNNN/NNNNN

Model Code Breakdown (per Danfoss official documentation):

• Product Family: SNP2NN — Danfoss Group 2 Standard Gear Pump

• Displacement Code: 025 — 25.2 cc/rev

• Rotation: L — Left-hand (counterclockwise, viewed from shaft end)

• Pump Type: N — Standard gear pump

• Mounting Flange: 03 — European standard 4-bolt flange, pilot diameter 36.5mm

• Drive Shaft: CA — Shaft configuration

• Rear Cover: P3 — Standard with M5 mounting holes

• Inlet Port: F6 — Flanged port

• Outlet Port: F5 — Flanged port

Reference Models:

• SNP2NN/025RN01DAP1C8C7NNNN/NNNEN

• SNP2NN/025RN01BAP1F6F5NNNN/NNNNN

• SNP2NN/025LN05AAP1B7B5NNNN/NNNNN

• SNP2NN/025LNA6SAP1F6F5NNNA/NNNAN

• SKP2NN/025LN06SBP1F6F5NNNN/NNN

Series Technical Specifications (per Danfoss official documentation):

• Product Series: Danfoss SNP2NN Aluminum Gear Pump

• Pump Type: Fixed Displacement External Gear Pump

• Body Material: High-Strength Extruded Aluminum Alloy

• Gear Material: Hardened Steel Gears

• Bearings: DU Journal Bushings

• Mounting Standards: SAE, DIN, and European standard flanges

This Model Detailed Specifications (025 displacement):

• Geometric Displacement: 25.2 cm³/rev

• Rated Operating Pressure: 16 MPa (160 bar / 2,320 psi)

• Peak Pressure: 17.5 MPa (175 bar / 2,540 psi)

• Maximum Speed: 3,000 min⁻¹

• Minimum Speed (at rated pressure): Approx. 600 – 800 min⁻¹

• Theoretical Flow (@3,000 rpm): 75.6 L/min

• Volumetric Efficiency: ≥ 94%

• Overall Efficiency: 85% – 92%

• Operating Temperature Range: -20°C to +80°C

• Recommended Fluid Viscosity: 10 – 800 cSt

• Fluid Compatibility: Mineral hydraulic oil

• Weight: Approx. 3.3 kg

Key Technical Advantages

1. High-Strength Extruded Aluminum Body — Lightweight with Superior Strength
The SNP2NN Series features a high-strength extruded aluminum body, cover, and front flange, delivering an optimal balance of maximum strength and minimum weight. The lightweight design simplifies installation and reduces overall equipment load, making it particularly suitable for weight-sensitive mobile hydraulic applications. The SNP2NN/025 model weighs only approximately 3.3 kg.

2. Pressure-Balanced Design for High Volumetric Efficiency
The pressure-balanced design ensures sealing pressure automatically adapts to operating conditions, improving overall efficiency and minimizing energy consumption. Pressure balance plates improve internal sealing, reduce leakage, and maintain operating pressure under high flow output. Volumetric efficiency reaches ≥94%, with overall efficiency of 85%–92%.

3. DU Journal Bearings with Integrated Gear Shaft — Extended Service Life
DU journal bushings provide excellent wear resistance under extreme temperature, pressure, and speed conditions. The integrated gear shaft construction minimizes deformation under pressure, extending service life.

4. Hardened Steel Gears with Excellent Contamination Resistance
Hardened steel gears provide protection against wear, abrasion, and fluid contamination. The SNP Series exhibits low sensitivity to fluid contamination, maintaining reliable operation under typical industrial fluid cleanliness conditions.

5. Modular Design with Flexible Multi-Pump Configurations
The SNP2NN Series supports single, tandem, and multiple pump configurations, stackable with SNP1NN, SNP2NN, and SNP3NN pumps. The modular design enhances flexibility with compact dimensions. Standardized SAE, DIN, and European mounting dimensions ensure complete interchangeability with original products.

Application Areas

• Agricultural Machinery: Tractor hydraulic systems, combine harvesters, sprayers, balers

• Construction Equipment: Small to medium excavators, loaders, telescopic handlers

• Material Handling Equipment: Forklift hydraulic systems, aerial lifts

• Municipal & Sanitation Vehicles: Street sweepers, cleaning vehicles

• Industrial Hydraulic Systems: Small to medium industrial hydraulic power units

• Off-Highway Vehicles: Working and steering circuits

Expert Maintenance Tips

1. Installation Precautions

• The SNP2NN Series is a uni-directional rotation pump—verify that the system’s required rotation direction matches the pump’s identification marking before installation. This model features left-hand (counterclockwise) rotation.

• Ensure coaxial alignment between the pump and drive shaft; flexible couplings are recommended to avoid radial loads on the pump shaft.

• The suction line diameter must not be smaller than the pump inlet port; minimum speed should not fall below 600 rpm to prevent cavitation.

2. Fluid Management

• Use mineral hydraulic oils conforming to ISO/DIN standards, with viscosity range of 10 – 800 cSt.

• System fluid cleanliness must meet Danfoss-recommended standards.

• Prime the pump by filling the housing with hydraulic fluid through the suction port before initial start-up. Never run the pump dry.

3. Start-Up & Commissioning

• Use jog start method for initial start-up; verify correct rotation direction before continuous operation.

• Allow the pump to run under no-load (low pressure) conditions for 2-3 minutes to purge air and ensure proper lubrication.

• Gradually increase to operating pressure while monitoring noise, temperature, and system pressure for normal operation. Volumetric efficiency should remain at or above 94%.

4. Routine Maintenance

• The SNP2NN gear pump itself is maintenance-free; however, regular maintenance of the entire hydraulic system is essential for trouble-free pump operation.

• Inspect system fluid cleanliness and condition every 1,000-2,000 operating hours.

• Regularly replace return line filters and suction strainers to prevent contaminant ingress into the pump body.