Danfoss 83017061 Hydraulic Axial Piston Pump CW

Danfoss 83017061 Hydraulic Axial Piston Pump CW (Series 45 – L25C)

The Danfoss 83017061 (Serial/ID: AU180395624) is a marine- and industrial-grade, open-circuit variable displacement axial piston pump belonging to the field-proven Danfoss Series 45 L-Frame (LR-R-025C) family. Engineered for open-loop hydraulic architectures, this unit converts mechanical shaft input into fluid power through a swashplate-driven reciprocating piston assembly. It delivers variable flow proportional to drive speed and swashplate inclination.

An integrated direct-acting pressure compensator (PC), and a rigid cast-iron cradle housing, the 83017061 is built for high-duty-cycle installations. It is widely specified across marine auxiliary hydraulic systems, offshore winches, offshore support vessel (OSV) deck machinery, mobile construction cranes, and offshore power packs where continuous operating pressures of 260 bar (3,770 psi) and peak dynamic pressures up to 350 bar (5,075 psi) are required.

Model Details

• Danfoss Part Number (MPN): 83017061
• Unit Production Stamp / Serial: AU180395624
• Full Factory Model Code: LR-R-025C-PC-25-NN-NN-N-3-C2BG-A6N-AAA-NNN-NNN

Technical Details

Features

1. Rigid One-Piece Swashplate Design: High-load journal bearings and a balanced swashplate assembly reduce internal bending moments, dampening system-borne acoustic noise and extending bearing life under continuous cyclic loading.
2. Integrated Pressure Limiter (PC Control): Built-in hydro-mechanical pressure compensator automatically drops pump flow to zero displacement once system pressure reaches the preset limit (250 bar), protecting hydraulic lines and cutting idling power losses.
3. Heavy-Duty Tapered Roller Bearings: High-capacity shaft support bearings accept significant external radial and thrust loads, making the unit suitable for indirect belt or direct bellhousing flex-coupling drives.
4. Corrosion-Resistant Marine-Ready Architecture: Heavy cast ductile-iron housing finished with protective primer withstands harsh marine engine rooms, bilge atmospheres, and saline washdown environments.
5. Standardized SAE Interface: SAE-B 2-bolt mounting pattern paired with standard SAE flanged ports ensures drop-in physical replacement without manifold reconfiguration or bracket rework.

Compatibility

• Marine Cranes & Davits: MacGregor, TTS Marine, Palfinger Marine, Liebherr Offshore.
• Deck Machinery & Steering: Rolls-Royce Marine (Kongsberg), Hatlapa, Brusselle Carral, Kawasaki Steering Gears.
• Construction & Mining Units: Caterpillar, Komatsu, Volvo CE, Sandvik, and Atlas Copco secondary hydraulic manifolds.
• Hydraulic Power Units (HPUs): Parker Hannifin, Bosch Rexroth, and Eaton/Vickers open-loop central power skids with SAE-B interface pads.

Frequently Asked Questions

What does the model code LR-R-025C-PC signify on Danfoss 83017061?

The code denotes an L-Frame Series 45 open-circuit pump (LR) with clockwise right-hand rotation (R), a maximum displacement of 25.0 cm³/rev (025C), and a factory-integrated hydro-mechanical Pressure Compensator (PC) designed to limit maximum circuit pressure.

Can I run the Danfoss 83017061 pump in counter-clockwise (CCW) rotation?

No. The Danfoss 83017061 is manufactured exclusively for Clockwise (CW) rotation as viewed from the drive shaft end. Attempting to drive this unit CCW will cause severe internal cavitation, starve the piston slippers, and destroy the valve plate. If you require CCW operation, order the corresponding reverse model (e.g., Danfoss 83017068 / LL-Frame variant).

What is the default pressure setting for the Danfoss 83017061 compensator?

The factory pressure compensator (PC-25) is calibrated to 250 bar (3,625 psi). The setting is field-adjustable between 100 bar and 260 bar by loosening the jam nut on the compensator spool housing and adjusting the internal hex set-screw while monitoring a gauge attached to the M1 diagnostic port.

What fluid viscosity and filtration grade are required?

The pump performs optimally within a fluid kinematic viscosity range of 16 to 40 cSt (mm²/s) using high-grade anti-wear (AW) ISO VG 32, VG 46, or VG 68 mineral or synthetic hydraulic oils. Fluid contamination should strictly be maintained to ISO 4406 cleanliness rating 18/16/13 or cleaner, utilizing return line or suction filtration of β10 ≥ 75.

What is the difference between Danfoss 83017061 and 83017062?

Danfoss part number 83017061 designates a Series 45 L-Frame (25cc) variable pump with CW rotation, whereas part number 83017062 corresponds to a different displacement and frame configuration (such as a Series 90 100cc closed-circuit pump). Always verify both the 8-digit part number and the full stamped alphanumeric model code before replacement.