SNP2NN/6.0LN06SAP1E6E5 Danfoss Gear Pump 250 Bar

Product Overview

The SNP2NN/6.0LN06SAP1E6E5NNNN/NNNNN is a Danfoss GearMe Group 2 fixed-displacement external gear pump, corresponding to Danfoss material number 111.20.347.00. Danfoss PowerSource identifies the product as a GEAR PUMP GR2 FIXED DISPL within the GearMe Aluminum Gear Pump range.

The pump has a 6.0 cm³/rev displacement, with a published 250 bar rated pressure and 280 bar peak pressure. The maximum speed is 4000 rpm, and the standard 6.0 cm³ configuration weighs approximately 2.4 kg. Danfoss specifies a theoretical flow of 24.0 L/min at maximum speed.

A critical engineering characteristic is the pressure-dependent minimum speed. For the 6.0 cm³ configuration, Danfoss specifies minimum speeds of 600 rpm at 0–100 bar, 1200 rpm at 100–180 bar, and 1400 rpm from 180 bar up to rated pressure. Therefore, the published 600 rpm value must not be interpreted as the minimum speed at all pressure levels.

The complete configuration includes counter-clockwise rotation, an SAE A two-bolt mounting flange with a Ø82.55 mm pilot, an SAE J498-9T-16/32 DP splined shaft, a standard P1 rear cover, 1-1/16-12UN inlet, and 7/8-14UNF outlet.

For replacement applications, the complete Danfoss code should be matched rather than selecting the pump by displacement alone. Our replacement engineering focuses on in-place dimensional and functional interchangeability, followed by 100% simulated operating-condition testing for flow, pressure, rotation, leakage and operating stability.

Technical Specifications

• Danfoss Material Number: 111.20.347.00
• Model: SNP2NN/6.0LN06SAP1E6E5NNNN/NNNNN
• Official Model Code: SNP2NN-/-6,0-L-N-06-SA-P1-E6-E5-NN-N-N-/-NNN-N-N
• Brand: Danfoss
• Product Family: GearMe
• Series: SNP2NN / Group 2
• Pump Type: Fixed-displacement external gear pump
• Displacement: 6.0 cm³/rev
• Rated Pressure: 250 bar
• Peak Pressure: 280 bar
• Minimum Speed at 0–100 bar: 600 rpm
• Minimum Speed at 100–180 bar: 1200 rpm
• Minimum Speed at 180 bar to Rated Pressure: 1400 rpm
• Maximum Speed: 4000 rpm
• Theoretical Flow at Maximum Speed: 24.0 L/min
• Control Method: Fixed displacement / mechanical
• Rotation: L = Counter-clockwise
• Mounting Flange: 06 = SAE A, Ø82.55 mm pilot, two bolt holes
• Drive Shaft: SA = SAE J498-9T-16/32 DP Class 1FIT-SC06 spline
• Rear Cover: P1 = Standard rear cover
• Inlet: E6 = 1-1/16-12UN
• Outlet: E5 = 7/8-14UNF
• Port Position: NN = Standard from catalogue
• Screws: N = Standard
• Seal: N = Standard seal
• Weight: 2.4 kg
• Moment of Inertia of Rotating Components: 26.5 × 10⁻⁶ kg·m²
• Housing Platform: GearMe Aluminum Group 2
• Pressure Rating Note: The stated rated and peak pressures apply to pumps with flanged ports. Threaded-port configurations require derating and Danfoss confirmation for high-pressure applications.

Ordering Code Interpretation

SNP2NN/6.0LN06SAP1E6E5NNNN/NNNNN

The Danfoss configuration identifies:

• SNP2NN — Group 2 gear pump
• 6.0 — 6.0 cm³/rev displacement
• L — Counter-clockwise rotation
• 06 — SAE A flange, Ø82.55 mm pilot, two-bolt mounting
• SA — SAE J498 splined drive shaft
• P1 — Standard rear cover
• E6 — 1-1/16-12UN inlet
• E5 — 7/8-14UNF outlet
• NN — Standard port position
• Remaining N fields — standard project, screw, seal and no-valve-setting configuration fields.

This shows why the complete code should be retained in technical purchasing and replacement documentation.

Key Technical Advantages

1. Compact 6.0 cm³/rev Displacement

The pump provides 6.0 cm³/rev fixed displacement. At 4000 rpm, the theoretical displacement flow is:

6.0 × 4000 / 1000 = 24.0 L/min

Danfoss publishes the same 24.0 L/min theoretical flow at maximum speed. Actual flow depends on operating pressure, volumetric efficiency, temperature and viscosity.

2. 250 Bar Rated Pressure

The official Group 2 data specifies 250 bar rated pressure for the 6.0 cm³ configuration, providing a suitable pressure class for many compact mobile hydraulic systems.

3. 280 Bar Peak Capability

The pump is specified for 280 bar peak pressure. This is a peak rating, not a continuous operating pressure.

4. Pressure-Dependent Minimum Speed

The minimum speed changes with operating pressure:

0–100 bar → 600 rpm

100–180 bar → 1200 rpm

180–250 bar → 1400 rpm

This pressure-dependent speed requirement is important when matching the pump to diesel engines, PTO drives or variable-speed motors.

5. SAE A and Splined Drive Configuration

The 06 + SA combination provides an SAE A two-bolt flange, Ø82.55 mm pilot and SAE J498 splined shaft. This standardized drive configuration is suitable for many mobile hydraulic power interfaces.

6. Aluminium GearMe Group 2 Platform

Danfoss identifies the product as a GearMe Aluminum Group 2 pump. The 6.0 cm³ version weighs approximately 2.4 kg, making it suitable for mobile systems where pump mass and packaging are important.

7. Defined Hydraulic Port Configuration

The E6 + E5 configuration provides:

1-1/16-12UN inlet

7/8-14UNF outlet

This provides an exact hydraulic-interface definition for replacement engineering.

Application Areas

Typical applications include:

• Construction machinery auxiliary hydraulics
• Agricultural machinery
• Material-handling equipment
• Mobile hydraulic power units
• Compact lifting equipment
• Industrial mobile equipment
• Auxiliary vehicle hydraulics
• Compact hydraulic stations
• High-pressure low-flow hydraulic circuits
• Mobile machine working circuits

Danfoss positions its GearMe range for mobile hydraulics, with Group 2 configurations covering different displacement, shaft, flange and port requirements.

Expert Maintenance Tips

1. Verify Counter-Clockwise Rotation

The L code specifies counter-clockwise rotation. Verify motor or PTO direction from the drive-shaft side before commissioning.

2. Do Not Use 600 rpm as the Universal Minimum Speed

At higher pressure, the required minimum speed increases:

• 0–100 bar: 600 rpm
• 100–180 bar: 1200 rpm
• 180–250 bar: 1400 rpm

Therefore, operating at 600 rpm while demanding close to 250 bar is outside the published speed/pressure relationship.

3. Respect the Pressure Ratings

Use:

250 bar = Rated Pressure

280 bar = Peak Pressure

The 280 bar value should not be used as a continuous-duty design pressure.

4. Verify SAE A Pilot Fit

The 06 configuration uses an SAE A flange with a Ø82.55 mm pilot and two bolt holes. Pilot engagement should be checked in addition to bolt-hole alignment.

5. Inspect the Splined Coupling

The SA shaft uses an SAE J498 spline configuration. Check spline engagement, axial positioning and coupling condition to prevent misalignment and shock loading.

6. Confirm Port Construction for High Pressure

Danfoss states that the published rated and peak pressures apply to flanged-port pumps. When threaded ports are required, performance derating must be considered and high-pressure application suitability should be confirmed with Danfoss.

7. Maintain Hydraulic Cleanliness

Monitor filter differential pressure and fluid contamination, particularly during continuous high-pressure operation. Contamination can accelerate wear of gears, bearings and internal sealing surfaces and reduce volumetric performance.

8. Match the Complete Configuration for Replacement

For replacement, verify:

111.20.347.00

SNP2NN/6.0LN06SAP1E6E5NNNN/NNNNN

and confirm:

6.0 cm³/rev + counter-clockwise rotation + SAE A flange + Ø82.55 mm pilot + SAE J498 spline + P1 rear cover + E6 inlet + E5 outlet + standard port position.

This complete-code approach is the correct basis for in-place interchangeability.