SNM2NL/022BN06BAL6E4ESPRYA/NNNAN08FEB18 Danfoss Gear Pump 22cc 280 bar

Product Overview

The SNM2NL/022BN06BAL6E4ESPRYA/NNNAN08FEB18 is a high-performance aluminum-body bidirectional fixed-displacement gear pump from Danfoss’ SNM2 Series. Danfoss, founded in 1933 and headquartered in Nordborg, Denmark, is a global leader in mobile and industrial hydraulic solutions. The SNM2 Series belongs to the Danfoss GearMe® aluminum gear pump product line, Group 2 specification.

This unit features a displacement of 22 cm³/rev and bidirectional rotation capability, making it ideal for hydraulic applications requiring forward and reverse operation. The SNM2 Series features high-strength extruded aluminum housing, aluminum rear cover, and front flange, delivering maximum strength with minimal weight. The pressure-balanced design ensures sealing pressure automatically adapts to operating conditions, significantly improving overall efficiency and minimizing energy losses.

Key Interchangeability Advantage: Our SNM2 series gear pumps are manufactured to strict Danfoss original design specifications, ensuring 100% direct interchangeability with original units. All mounting interfaces, flange dimensions, shaft configurations, and port positions are identical to the original product – no modifications required. Every pump undergoes 100% factory performance testing under simulated operating conditions (covering rated pressure, peak pressure, and full speed range performance curves), guaranteeing plug-and-play reliability with zero performance deviation.

Related Series Description:

The user’s query includes multiple Danfoss gear pump series – SNW, SNP, SKP, and SNM:

• SNP Series (SNP1/SNP2/SNP3) : Standard external gear pumps, Group 1/2/3 specifications for general hydraulic systems

• SKP Series (SKP1/SKP2) : High-torque gear pumps with larger shaft diameter than SNP series, for high-load applications

• SNM Series (SNM2/SNM3) : Bidirectional gear pumps/motors, Group 2/3 specifications for bidirectional applications

• SNW Series (SNW2/SNW3) : Wide-body gear pumps for high-flow applications

Model Code Breakdown (based on Danfoss SNM2 Series designation rules):

• SNM2 = Series: Group 2 Bidirectional Gear Pump/Motor

• NL = Configuration: Bidirectional motor with vertical drain port

• 022 = Displacement code: 22 cm³/rev

• BN06 = Shaft type / mounting configuration code

• BAL6E4E = Port and flange configuration code

• SPRYA/NNNAN08FEB18 = Specific design / batch code

Technical Specifications 

SNM2NL/022BN06BAL6E4ESPRYA/NNNAN08FEB18

• Product Series: Danfoss SNM2 Series Aluminum-Body Bidirectional Fixed-Displacement Gear Pump

• Brand: Danfoss (Denmark)

• Group: 2

• Displacement: 22 cm³/rev

• Rated Continuous Operating Pressure: 250 bar

• Peak Pressure: 280 bar

• Maximum Speed: 4000 rpm

• Minimum Speed: 500 – 800 rpm

• Pump Type: Bidirectional (forward and reverse rotation)

• Direction of Rotation: Bidirectional (clockwise or counter-clockwise)

• Housing Material: High-strength extruded aluminum

• Flange Material: Aluminum

• Cover Material: Aluminum

• Bearings: Teflon® coated bushings for extended life under extreme temperature and pressure conditions

• Gear Construction: One-piece gear shaft

• Seals: NBR

• Mounting: Flange mounting

• Mounting Position: Optional

• Recommended Fluid: Mineral hydraulic oil (HLP grade)

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

• Typical Applications: Agriculture, construction, crane and material handling, forestry, heavy machinery, road construction

Key Technical Advantages

1. Bidirectional Design for Flexible Operation

The SNM2 Series features bidirectional gear pump/motor capability, supporting both clockwise and counter-clockwise rotation. This design makes it widely applicable to hydraulic systems requiring forward and reverse operation – such as combine header lifts, crane slewing mechanisms, and bidirectional drives in material handling equipment – eliminating the need for pump replacement to achieve bidirectional functionality.

2. High-Strength Extruded Aluminum Housing for Lightweight High Power Density

The SNM2 Series features high-strength extruded aluminum housing with aluminum rear cover and front flange, delivering substantial weight reduction while maintaining structural integrity. Danfoss fixed-displacement aluminum gear pumps ensure your machine’s operation with the lightest weight and maximum strength. The lightweight design simplifies installation and reduces the load on host machinery – particularly critical for weight-sensitive off-highway vehicles and mobile equipment applications.

3. Pressure-Balanced Design for High Efficiency and Long Service Life

The pressure-balanced design ensures sealing pressure automatically adapts to operating conditions, improving overall efficiency and minimizing energy losses. Internal friction is minimized with a perfectly fitted housing, extending operating life. Pressure-balanced bearing blocks deliver maximum performance across the entire operating range. Combined with Teflon® coated bushings, service life is extended under extreme temperature and pressure conditions.

4. One-Piece Gear Shaft Construction for High Reliability

The one-piece gear shaft construction minimizes deformation under pressure. This design eliminates clearance between gear and shaft, improving transmission precision and fatigue resistance – ensuring long-term reliable operation under high-pressure, high-load conditions.

5. Modular Design and Flexible Configuration

Danfoss multi-stage pumps include Groups 1, 2, 3, and 4, with modular and short versions offering flexibility and compactness. Multiple configuration options are available through various European or SAE flange options to meet diverse machine requirements. The SNM2 Series offers a wide range of displacement options (6 – 25.2 cm³/rev), enabling precise matching to diverse application requirements.

Application Areas

• Agricultural Machinery: Combine harvesters, forage harvesters, sprayers, tractor hydraulic systems

• Construction Equipment: Excavators, wheel loaders, bulldozer hydraulic systems

• Material Handling Equipment: Forklifts, stackers, telehandlers, crane equipment

• Forestry Equipment: Loggers, wood chippers, skidders

• Road Construction Machinery: Rollers, graders, pavers

• Cleaning and Dust Suppression Equipment: High-pressure cleaning vehicles, dust suppression vehicles

• Off-Highway Vehicles: Small to large off-highway vehicles

• Industrial Hydraulic Systems: Various industrial hydraulic applications

Expert Maintenance Tips

1. Model Confirmation and Selection

• The SNM2NL/022BN06BAL6E4ESPRYA/NNNAN08FEB18 has a displacement of 22 cm³/rev, belonging to the SNM2 Series (Group 2, displacement 6 – 25.2 cm³/rev).

• The NL suffix indicates a bidirectional motor configuration with vertical drain port.

• The SNM2 Series is bidirectional, supporting both clockwise and counter-clockwise rotation. Verify whether bidirectional functionality is required during selection.

• Verify system operating pressure, flow requirements, and rotation direction during selection.

2. Pre-Installation Checks

• The SNM2 Series is bidirectional – verify piping connections match the required rotation direction during installation.

• Check mounting flange type (European or SAE flange) for compatibility with system interface.

• Confirm shaft specifications precisely match coupling.

• Never use hammer-driven installation – always use proper tools.

3. First Start-Up & Oil Priming

• Prime the pump housing with clean hydraulic oil before first start-up; ensure suction line is fully filled – never run dry.

• Recommended fluid: Danfoss-spec mineral hydraulic oil.

• Maintain operating temperature within -20°C to +80°C.

• Speed range: 500 – 4000 rpm.

4. Filtration & Fluid Cleanliness

• System filtration should meet ISO 4406 cleanliness class 20/18/15 or better.

• Regularly monitor fluid cleanliness to prevent contaminants from accelerating gear and Teflon® coated bushing wear.

5. Operating Monitoring

• Continuous operating pressure must not exceed 250 bar; peak pressure must not exceed 280 bar.

• If abnormal noise or pressure fluctuation occurs, first check suction lines for leakage or blockage.

• Regularly check torque on pump and piping connection bolts to prevent loosening from vibration.

• Teflon® coated bushings extend service life under extreme conditions – regularly inspect bushing wear condition.