MPV046CBBHSBBAAGABDDCDAZGANNN Danfoss Pump | 345 Bar

Product Overview

The MPV046CBBHSBBAAGABDDCDAZGANNN is a 45.9 cm³/rev displacement model from Danfoss’ (formerly Sauer Danfoss) Series 40 M46 axial piston variable pump family, with manufacturer part number 83008997. Series 40 M46 pumps utilize a pressure-balanced swashplate design with a tiltable swashplate and efficient axial-piston/slipper configuration, varying displacement through swashplate angle change to provide a continuously variable speed range between zero and maximum in both forward and reverse directions. The series is designed for medium-power hydrostatic transmission applications with a maximum working pressure of 345 bar (5,000 psi) and rated speed of 4,000 rpm.

Series 40 M46 pumps are specifically designed for closed-circuit hydrostatic transmissions with an integral charge pump providing system replenishing and cooling flow. The series is widely deployed in material handling, construction equipment, turfcare and specialty vehicle applications.

The model code breaks down as follows: MPV identifies the Series 40 variable pump family; 046 denotes the 45.9 cm³/rev displacement; C indicates product version C (swashplate design); B is pressure balanced swashplate; B is the seal group (shaft seal for electrical displacement control/hydraulic displacement control); H is the input shaft/auxiliary drive configuration (15 tooth 16/32 spline / 9 tooth 16/32 auxiliary drive A); S is the rotation and valve plate configuration; B is the charge pump displacement of 13.99 cm³/rev; B is the charge relief valve setting of 19.5 bar (280 psi); AA is suction filtration with charge pump; A is full displacement limiter; A is bypass valve – no orifice; BDD is system pressure protection setting (250 bar/3,625 psi with check valve); CD is electrical displacement control (dual coil, oil filled, MS 4-pin connector, 23-132 mA); A is handle position not applicable; Z is control orifice diameter; GA is electrical displacement control/hydraulic displacement control/forward-neutral-reverse configuration; NNN is special hardware features (standard hardware, black paint, Danfoss tag).

Every MPV046CBBHSBBAAGABDDCDAZGANNN unit undergoes 100% simulated operating-condition bench testing prior to shipment, covering pressure cycling, displacement response, control signal calibration and thermal shock. Mounting flange, shaft end and port dimensions comply with SAE standards and are identical to the original Danfoss MPV046, ensuring true drop-in interchangeability with zero modification required.

Technical Specifications

Series 40 MPV Series Frame Size Specifications:

• MPV025: Displacement 24.6 cm³/rev (1.50 in³/rev), max working pressure 345 bar (5,000 psi), rated speed 4,000 rpm

• MPV035: Displacement 34.6 cm³/rev (2.11 in³/rev), max working pressure 345 bar (5,000 psi), rated speed 4,000 rpm

• MPV044: Displacement 44.0 cm³/rev (2.68 in³/rev), max working pressure 345 bar (5,000 psi), rated speed 4,000 rpm

• MPV046 (This Model): Displacement 45.9 cm³/rev (2.80 in³/rev), max working pressure 345 bar (5,000 psi), rated speed 4,000 rpm

MPV046CBBHSBBAAGABDDCDAZGANNN Additional Specifications:

• Model Code: MPV046CBBHSBBAAGABDDCDAZGANNN

• Manufacturer Part Number: 83008997

• Product Series: Danfoss Series 40 M46

• Type: Swashplate design, variable displacement axial piston pump

• Maximum Displacement: 45.9 cm³/rev (2.80 in³/rev)

• Minimum Displacement: 0 cm³/rev (infinitely adjustable to zero)

• Max Working Pressure (Continuous): 345 bar (5,000 psi)

• System Pressure Protection Setting: 250 bar (3,625 psi)

• Rated Speed: 4,000 rpm

• Speed Range: 500–4,000 rpm

• Control Type: Electrical Displacement Control (EDC), dual coil, oil filled, MS 4-pin connector, 23-132 mA

• Integral Charge Pump Displacement: 13.99 cm³/rev (0.85 in³/rev)

• Charge Relief Valve Setting: 19.5 bar (280 psi)

• Mounting Flange: SAE-B 2-bolt flange

• Input Shaft Configuration: 15 tooth 16/32 spline / 9 tooth 16/32 auxiliary drive A

• Auxiliary Mounting Pad: SAE A

• Rotation: Counterclockwise (CCW)

• Filtration: Suction filtration with charge pump

• Limiter Configuration: Full displacement limiter

• Bypass Valve: Bypass valve – no orifice

• Weight: ~33 kg (73 lbs)

• Circuit Type: Closed circuit

• Operating Temperature Range: -40°C to +115°C

• Hydraulic Fluid: Mineral oil (ISO VG46/68), synthetic oil, water glycol

Key Technical Advantages

1. Pressure-Balanced Swashplate Design for Precise Stepless Displacement Modulation

The MPV046CBBHSBBAAGABDDCDAZGANNN employs Danfoss Series 40’s signature pressure-balanced swashplate design with efficient axial-piston/slipper configuration, adjusting swashplate angle through a servo control system to achieve infinitely variable displacement from zero to maximum. The pump provides continuously variable speed in both forward and reverse directions without additional valve fittings. With a rated speed of 4,000 rpm and maximum working pressure of 345 bar, it delivers excellent power density in medium-power closed-circuit transmission applications.

2. Electrical Displacement Control (EDC) for Precise Control Integration

This model is configured with Electrical Displacement Control (EDC) featuring dual coil, oil-filled solenoids, MS 4-pin connector and 23–132 mA control current range. EDC control enables seamless integration with machine electronic control systems for precise flow and pressure regulation. Series 40 M46 pumps also support manual, hydraulic and electronic proportional control options including three-position electric control (forward/neutral/reverse), enabling flexible adaptation to various transmission control schemes.

3. Integral Charge Pump and Charge Relief Valve for Stable Charge Supply

The MPV046 features an integral charge pump as standard, with 13.99 cm³/rev charge pump displacement and 19.5 bar (280 psi) charge relief valve setting. The charge pump provides stable charge pressure and cooling/lubrication flow for closed-circuit systems, ensuring the main pump always receives adequate inlet flow under high-speed, high-pressure conditions. The charge pump is protected by suction filtration to prevent contaminants from entering the system.

4. System Pressure Protection and Full Displacement Limiter

This model is configured with system pressure protection set at 250 bar (3,625 psi) with check valve. The full displacement limiter restricts maximum displacement within standard range, ensuring system operation within safe pressure limits. The bypass valve – no orifice configuration supports flexible system switching under special operating conditions.

5. 100% Simulated Load Testing & Drop-In Interchangeability

Each MPV046CBBHSBBAAGABDDCDAZGANNN unit is bench-tested under simulated operating conditions prior to dispatch, covering pressure cycling, displacement response, control signal calibration and thermal variation. Mounting flange, shaft end and port dimensions comply with SAE standards, matching the original Danfoss MPV046 exactly, enabling direct replacement without pipework or interface modification.

Application Areas

Series 40 M46 pumps are widely deployed across mobile and industrial hydraulic applications:

• Material Handling: trenchers, compact track loaders, skid steer loaders, utility vehicles

• Construction Equipment: soil compactors, asphalt compactors, pavers, rollers

• Turfcare: mowers, fairway machines

• Specialty Vehicles: sweepers, waste-collection vehicles

• Agriculture: tractor hydraulic systems, combine harvester drive systems

• Industrial: medium-power closed-circuit hydrostatic transmission systems

The MPV046 is OEM-installed on Bobcat, Caterpillar, Case and other major equipment platforms, suitable for John Deere and similar brands’ travel drive systems.

Expert Maintenance Tips

1. Control Signal Calibration and Displacement Verification: The EDC electrical displacement control requires control signal calibration after installation to confirm minimum displacement position (0 cm³/rev) and maximum displacement position match the technical manual. Control current range is 23–132 mA—ensure linear proportional relationship between displacement and control current. If displacement response exhibits lag or drift, inspect proportional solenoid operating condition, control spool for sticking and pilot circuit for air entrainment. Establish a displacement-current calibration curve in the machine electronic control system.

2. Charge Pump and Filtration System Maintenance: The MPV046 features an integral charge pump (13.99 cm³/rev) and suction filtration configuration as standard. The charge pump provides charge pressure and cooling flow for closed-circuit systems—periodically inspect charge pressure and charge relief valve operating condition. Charge relief valve setting is 19.5 bar (280 psi); if charge pressure is abnormally high, inspect filter for clogging. Replace hydraulic oil and filter after the first 500 hours, then follow a 2,000-hour or annual replacement cycle.

3. Drain Line Management and Housing Priming: The drain port must return to the reservoir independently—housing back pressure must not exceed 2 bar. The drain line end must remain submerged to prevent air ingestion. Fill the housing with clean hydraulic oil before first startup. After extended shutdown, fill the housing again before restarting.

4. Oil Cleanliness and Temperature Control: Maintain system oil cleanliness at ISO 4406 18/16/13 or better. Operating oil temperature should be kept below 80°C—system temperature must not exceed 115°C at any point. VG 46 is recommended at 60°C operating temperature. Refer to the Danfoss technical manual for operating viscosity range to ensure optimal volumetric efficiency under varying conditions.

5. Periodic Swashplate Mechanism and Piston Group Inspection: The MPV046’s swashplate bearings, piston slippers and cylinder bores are primary wear components. Inspect swashplate bearing clearance, piston slipper wear and cylinder bore clearance every 2,000 hours. Abnormal efficiency loss, noise or vibration requires immediate shutdown and service. Use Danfoss original specification parts when replacing piston groups or swashplate bearings to ensure fit accuracy and assembly torque per technical manual requirements.