Danfoss SNP3NN Gear Pump | OEM Replacement & Genuine Alternative Part

Pump Type	External Gear Pump(Group 3)
Displacement	Min 22cc/rev, Max 90cc/rev
Continuous Pressure	Up to 250 bar[3625 psi]
Speed	Up to 3000 min-1(rpm)
Material	Aluminum Alloy
Mounting Type	SAE,DIN and European standard mounting flanges
Rotation	Clockwise ,Counterclockwise
Key Features	High quality case hardened steel gears
OEM Manufactured Compatibility	Sauer Danfoss
MOQ	10 Pcs

Danfoss Group 3 Fixed-Displacement SNP3NN Gear Pump engineered for industrial and mobile applications. Built with a robust high-strength extruded aluminum body, aluminum cover, and flange, these pressure-balanced units deliver exceptional efficiency and durability. Available in 10 displacements from 22.1 to 88.2 cc/rev, they feature case-hardened steel gears, SAE/DIN/European standard mounting flanges, and support multi-pump configurations. Rated for continuous pressure up to 250 bar (3625 psi) and peak pressure up to 270 bar (3910 psi), with speed ranges from 600–800 rpm (min) to 2500–3000 rpm (max). Ideal for demanding hydraulic systems requiring reliable, high-efficiency fluid power.

The Danfoss Group 3 is a range of peak performance fixed-displacement gear pumps. Constructed of a high-strength extruded aluminum body with aluminum cover and flange, all pumps are pressurebalanced for exceptional efficiency.

SNP3NN Gear Pump Features and Benefits:

Wide range of displacements from 22 to 90 cm³/rev[from 1.34 to 5.49 in³/rev]
Continuous pressure rating up to 250 bar [3625 psi]
Speeds up to 3000 min-1(rpm)
SAE,DIN and European standard mounting flanges
High quality case hardened steel gears
Multiple pump configurations in combination with SNP1NN,SNP2NN and SNP3NN

SNP3NN Gear Pump Displacements:

SNP3NN Gear Pump Technical Data:

SNP3NN Gear Pump		Frame Size
SNP3NN Gear Pump		022	026	033	038	044	048	055	063	075	090
Displacement	cm³/rev [in³/rev]	22.1	26.2	33.1	37.9	44.1	48.3	55.1	63.4	74.4	88.2
Displacement	cm³/rev [in³/rev]	[1.35]	[1.60]	[2.02]	[2.32]	[2.69]	[2.93]	[3.36]	[3.87]	[4.54]	[5.38]
Peak Pressure	bar [psi]	270	270	270	270	270	250	250	230	200	170
Peak Pressure		[3910]	[3910]	[3910]	[3910]	[3910]	[3625]	[3625]	[3350]	[2910]	[2465]
Rated Pressure		250	250	250	250	250	230	230	210	180	150
Rated Pressure		[3625]	[3625]	[3625]	[3625]	[3625]	[3350]	[3350]	[3045]	[2610]	[2175]
Minimum Speed	min^-1 (rpm)	800	800	800	800	800	800	800	600	600	600
Maximum Speed	min^-1 (rpm)	3000	3000	3000	3000	3000	3000	2500	2500	2500	2500
Weight	kg [lb]	6.8	6.8	7.2	7.3	7.5	7.6	7.8	8.1	8.5	8.9
Weight	kg [lb]	[15.0]	[15.0]	[15.8]	[16.1]	[16.5]	[16.8]	[17.3]	[17.9]	[18.7]	[19.6]
Moment of inertia of	x 10⁻⁶ kg·m²	198	216	246	267.2	294.2	312.2	342.3	378.3	426.4	486.5
Rotating components	[x 10⁻⁶ lb·ft²]	[4698]	[5126]	[5838]	[6340]	[6891]	[7408]	[8123]	[8977]	[10118]	[11545]
Theoretical flow	l/min	66.3	78.6	99.3	113.7	132.3	144.9	137.8	158.5	186	220.5
Maximum Speed	[US gal/min]	[17.5]	[20.8]	[26.2]	[30.0]	[35.0]	[38.3]	[36.4]	[41.8]	[49.1]	[58.3]

Use these formula to determine the nominal pump size for a specific application:

Vg	Displacement per rev.	cm³/rev[in³/rev]
pHD	Outlet pressure	bar[psi]
pND	Inlet pressure	bar[psi]
∆p	pHD – pND	bar[psi]
n	Speed	min^-1(rpm)
η_v	Volumetric efficiency
η_m	Mechanical(torque)efficiency
η_t	Overall efficiency(ηv*ηm)

SNP3NN Gear Pump Common Applications:

The SNP3NN series gear pump is widely used in hydraulic systems across industrial and mobile machinery where stable flow, reliable performance, and high-pressure operation are required. Typical applications include:

Construction machinery: excavators, loaders, bulldozers, and compactors
Agricultural equipment: tractors, harvesters, and sprayers
Material handling: forklifts, aerial work platforms, and hydraulic lift systems
Industrial machinery: presses, injection molding machines, and metalworking equipment
Marine & offshore equipment: small hydraulic power units and deck machinery
Waste management & recycling: compactors, shredders, and transport vehicles

Our SNP3NN gear pump oem replacement supports extensive customization options, including displacement, rotation direction, mounting flange, shaft, port, integrated valves, seals, materials and pressure&speed to meet diverse hydraulic system requirements.

Category	Customizable Items
Displacement & Performance	Geometric Displacement: 22.1, 26.2, 33.1, 37.9, 44.0, 48.0, 55.0, 63.0, 75.0, 88.2 cc/rev
	Rotation Direction: Clockwise (R), Counterclockwise (L)
	Pressure Rating: Continuous up to 250 bar; Peak up to 270 bar (custom set pressure available)
	Max Speed: Up to 3000 rpm (application‑adjustable)
Mounting Flange	Standard Flanges: SAE B, European 4‑bolt, DIN standard (custom pilot/bolt pattern for OEM)
Mounting Flange	Flange Type: Fixed mounting flanges (SAE, ISO, European configurations)
Shaft Types	SAE splined (13‑tooth standard, J498‑13T‑16/32‑Dp)
	Tapered 1:8 with parallel key (DIN)
	European splined shafts
Shaft Seal	Nitrile (NBR) standard
	Fluorocarbon (FKM) for high‑temp
	PTFE for chemical resistance
Port & Connection	Port Types: BSPP (G), SAE O‑ring boss, ISO 6149, European flanged ports
	Port Location: Side ports, Rear ports (reversible)
	Port Size: Customized to system piping (M27x2, M33x2, etc.)
Integrated Valves	Integral Relief Valve: Built‑in pressure relief (custom set pressure: 50–250 bar)
Integrated Valves	Check Valve: Optional anti‑backflow check valve (integrated)
Material & Durability	Housing: High‑strength extruded aluminum alloy (standard); cast iron (optional for heavy‑duty)
	Gears: Case‑hardened steel (standard; custom surface treatments available)
	Bushings: Steel (standard); Teflon-coated for extreme conditions
Multi‑Pump & Modular Configurations	Multi‑Stage Pumps: Stackable with SNP1NN, SNP2NN, SNP3NN for multi‑circuit systems
Multi‑Pump & Modular Configurations	Modular Design: Compact/shortened versions for space-constrained installations
Special Application Upgrades	Corrosion Protection: Anti-corrosion coatings for marine/harsh environments
Special Application Upgrades	Certifications: ATEX, CE, RoHS compliance for hazardous areas

Our SNP3NN gear pump is engineered as a premium direct OEM replacement, built to match the original factory specifications, dimensions and performance with zero compromise on quality. Manufactured using high-grade materials and precision machining, it features a precision gear structure that ensures stable flow, low noise and high volumetric efficiency, along with outstanding pressure resistance and long service life for heavy-duty hydraulic applications. Each unit undergoes strict quality inspection and performance testing to guarantee consistent operation and leak-free performance identical to genuine original parts. Fully interchangeable with OEM SNP3NN pumps for easy installation and maintenance, this replacement component delivers the same reliability and durability at a more cost-effective price. Our gear pump holds ISO 9001, CE and RoHS certifications, meeting international industrial standards, and is backed by a 12-month after-sales warranty for complete peace of mind in all your hydraulic systems.

Hydraulic Gear Pump – FAQ

What is an external gear pump?

An external gear pump is a positive-displacement hydraulic pump that uses two externally meshing gears to deliver stable hydraulic flow.

What applications are external gear pumps commonly used for?

External gear pumps are widely used in construction machinery, agricultural equipment, industrial hydraulic systems, material handling, and mobile hydraulics.

What pressure range can an external gear pump handle?

Most external gear pumps operate at rated pressures up to 200–250 bar, with higher peak pressure depending on design and materials.

What displacement ranges are available?

External gear pumps are available in a wide range of displacements, typically from 1 cc/rev to over 100 cc/rev, depending on series and configuration.

What speed range is suitable for external gear pumps?

Typical operating speed ranges from 500 to 3000 RPM, depending on load conditions, oil viscosity, and pump design.

Can external gear pumps be customized?

Yes. External gear pumps can be customized in terms of displacement, pressure rating, shaft type, mounting flange, port size, and rotation direction.

Are external gear pumps interchangeable with OEM brands like Rexroth?

Many external gear pumps are designed to be dimensionally interchangeable with major OEM brands such as Rexroth, Danfoss, Eaton, and Parker.

What materials are used for external gear pumps?

Common materials include aluminum alloy housings for lightweight applications and cast iron housings for higher pressure and heavy-duty use.

What hydraulic fluids can be used?

External gear pumps are compatible with mineral hydraulic oils, HLP/HV oils, and other standard industrial hydraulic fluids.

How do I select the right external gear pump?

Selection depends on pressure rating, displacement, speed range, application requirements, and installation dimensions. Contact our engineers for technical support.

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