Product Overview

05817054 is identified in BOMAG parts documentation as a Vibration Pump for road-roller hydraulic systems. BOMAG service documentation for the related 42R041 pump identifies the unit as a variable displacement axial piston pump with swash-plate design, closed-circuit operation and EDC electric two-point control.

Danfoss’s current official Series 42 technical information defines the 41 cm³/rev frame with:

• 41 cm³/rev displacement
• 400 bar maximum working pressure
• 450 bar maximum pressure
• 500 rpm minimum speed
• 3200 rpm rated speed at maximum displacement
• 3450 rpm maximum speed at maximum displacement
• 131 L/min theoretical flow at rated speed
• 15.6 cm³/rev standard internal charge pump for the 41/51 cm³ frame.

BOMAG application documentation describes the 42R041 vibration pump as an axial piston/swash-plate unit for closed hydraulic circuits and identifies its application in mobile construction equipment.

For aftermarket supply, we recommend treating 05817054 as the primary BOMAG part number and verifying the exact Series 42 configuration from the machine nameplate and serial-specific parts documentation before final release.

Our replacement program focuses on in-place interchangeability backed by 100% simulated working-condition testing.

Technical Specifications

05817054 / 42R041 Platform

• OEM Machine Brand: BOMAG
• BOMAG Part Number: 05817054
• BOMAG Description: Vibration Pump
• Related Pump Family: Sauer / Danfoss Series 42
• Related Type: 42R041
• Pump Type: Variable Displacement Axial Piston Pump
• Circuit: Closed Circuit
• Pump Design: Swash-plate axial piston
• Displacement: 41 cm³/rev
• Displacement: 2.50 in³/rev
• Control: EDC Electrical Displacement Control
• Minimum Speed: 500 rpm
• Rated Speed at Maximum Displacement: 3200 rpm
• Maximum Speed at Maximum Displacement: 3450 rpm
• Maximum Working Pressure: 400 bar / 5800 psi
• Maximum Pressure: 450 bar / 6525 psi
• Continuous Inlet Pressure: 0.8 bar absolute
• Cold-Start Minimum Inlet Pressure: 0.2 bar absolute
• Theoretical Flow at Rated Speed: 131 L/min / 34.6 US gpm
• Standard Internal Charge Pump for 41/51 cm³ Frame: 15.6 cm³/rev
• Standard Charge Relief Setting: 20 bar / 290 psi
• Optional Charge Relief Setting: 10–24 bar / 145–348 psi.

BOMAG 42R041 Application Data

BOMAG service documentation identifies:

• Pump: 42R041
• Maximum Displacement: 41 cm³/rev
• Control: EDC
• Operating Pressure: approximately 100 bar, application dependent
• Integrated Charge Pump: 11 cm³/rev
• System: Closed circuit
• Vibration Motor: A10FM45, 45 cm³/rev.

The BOMAG machine-level operating pressure must not be confused with the Danfoss Series 42 frame’s maximum working-pressure rating.

Model and Cross-Reference Status

BOMAG 05817054

BOMAG parts material identifies 05817054 as a vibration pump. Historical BOMAG parts material also places this part number in vibration-pump assemblies.

42R041

BOMAG service literature identifies the vibration pump as:

Sauer 42R041

with:

• 41 cm³/rev
• axial piston/swash-plate construction
• closed-circuit operation
• EDC control.

Danfoss’s present Series 42 documentation independently confirms the 41 cm³/rev frame’s pressure, speed and flow characteristics.

Exact Danfoss configuration

Public cross-reference material links 05817054 with the 42R041 family, but the BOMAG public online parts pages reviewed do not expose a complete Danfoss ordering code for 05817054 itself. Therefore, the exact Danfoss model code, shaft configuration, relief-valve setting and auxiliary options should be verified against the original nameplate before supply.

Important Correction: 05802505

05802505 is not the same hydraulic component as 05817054.

BOMAG parts documentation identifies 05802505 as a Vibration Motor, while public cross-reference catalogs identify the associated motor platform as Rexroth A4FM28.

Therefore:

05817054 → Vibration Pump

05802505 → Vibration Motor

These parts should not share one technical specification block.

Key Technical Advantages

1. Closed-Circuit Variable Displacement Design

The BOMAG 42R041 application uses a swash-plate axial piston pump in a closed hydraulic circuit. Variable displacement allows hydraulic flow to be controlled in relation to the required vibration-drive condition.

2. 41 cm³/rev High-Speed Frame

The Danfoss Series 42 41 cm³/rev frame is rated at 3200 rpm at maximum displacement and can reach 3450 rpm maximum under the specified conditions.

3. EDC Electrical Control

BOMAG identifies the 42R041 vibration pump with EDC electric two-point control. Danfoss describes EDC as a high-gain control in which small changes in electrical input can produce significant servo-valve movement.

4. High-Pressure Capability

For the 41 cm³/rev Series 42 frame, Danfoss specifies:

• 400 bar maximum working pressure
• 450 bar maximum pressure.

These values are hydraulic-unit limits and should not be represented as the normal operating pressure of a specific BOMAG machine.

5. Charge-Pump Support

The Series 42 41/51 cm³ frame uses a standard 15.6 cm³/rev internal charge pump in the current Danfoss technical specification, while the BOMAG 42R041 application documentation identifies an 11 cm³/rev integrated charge pump for that machine application. These are different documentation contexts and should not be merged into a single guaranteed specification for every 05817054 unit.

6. Designed for Mobile Construction Equipment

BOMAG documentation explicitly places the 42R041 within a mobile-construction-equipment vibration system. This makes the pump suitable for the cyclic load and control requirements of road-roller compaction systems.

7. Hydraulic Cleanliness Support

Danfoss recommends controlling Series 42 hydraulic fluid cleanliness to ISO 4406 Class 22/18/13 and warns that clogged filters can reduce charge flow and affect machine performance.

8. Configuration-Level Replacement

For a correct replacement, the engineering check should include:

• BOMAG part number
• Machine model
• Serial number
• Pump configuration
• Displacement
• EDC type
• Shaft
• Porting
• Charge-pump arrangement
• Pressure protection
• Rotation
• Test requirements

This is more reliable than matching 05817054 by appearance alone.

Application Areas

Typical applications for the 05817054 / 42R041 platform include:

• BOMAG single-drum rollers
• Soil compactors
• Road-construction machinery
• Closed-circuit vibration systems
• Hydraulic eccentric-shaft drive systems
• Mobile construction equipment

Historical public parts references associate 05817054 with several BOMAG BW211/BW213/BW214/BW215/BW216 generations, although final fitment must be verified from the machine serial number.

BOMAG’s current parts system explicitly instructs customers to use the machine serial number to obtain the correct machine-specific documents and spare-parts catalogue.

Expert Maintenance Tips

1. Prime and bleed before startup.
BOMAG documentation specifically warns that hydraulic units must be filled with hydraulic oil and purged before startup and during operation to prevent component damage.

2. Keep inlet pressure above 0.8 bar absolute during continuous operation.
The Series 42 technical specification gives 0.8 bar absolute as the continuous inlet-pressure requirement and 0.2 bar absolute as the cold-start minimum.

3. Do not treat 450 bar as continuous pressure.
For the 41 cm³/rev frame, 400 bar is the maximum working pressure and 450 bar is the maximum pressure. Applications above maximum working pressure require duty-cycle analysis and factory approval.

4. Do not use relief valves as continuous pressure regulators.
Danfoss states that high-pressure relief valves are intended for transient overpressure protection. Prolonged flow across a relief valve produces excessive heat and can damage system components.

5. Verify charge pressure after replacement.
Incorrect charge pressure can cause poor system-pressure build-up, inadequate pump control and insufficient loop flushing flow.

6. Check the vibration motor together with the pump.
The BOMAG 42R041 application documentation identifies an A10FM45, 45 cm³/rev vibration motor. A replacement pump should therefore be tested against the actual pump-motor combination rather than as an isolated component.

7. Clean the entire hydraulic circuit before commissioning.
Check the reservoir, filters, suction circuit, charge circuit, loop flushing components and vibration motor for contamination generated by the failed pump. Danfoss specifically emphasizes clean fluid and regular filter maintenance.

8. Monitor case pressure.
The Series 42 technical information specifies 3 bar rated case pressure and 5 bar maximum cold-start case pressure. Drain-line restriction must therefore be controlled.

9. Verify the exact machine configuration.
For BOMAG parts, confirm:

Part Number → Machine Model → Serial Number → Pump Configuration → Hydraulic Circuit → Test

The current BOMAG spare-parts system itself requires the machine serial number for machine-specific documentation.

10. Use 100% simulated working-condition testing.
For a verified 05817054 replacement unit, the outgoing test should include:

• Priming and low-speed startup
• Rotation verification
• Charge-pressure verification
• Closed-loop A/B pressure
• EDC response
• Maximum-displacement flow
• Pressure-limiter response
• Case leakage
• Temperature rise
• Vibration-motor load simulation
• Sustained vibration-cycle testing

The correct acceptance target is the complete pump + control + closed-loop + vibration-motor response, not a single maximum-pressure reading.