Sauer Danfoss 51V & 51D Motor | 51V110, 51V160, 51D080, 51D160 | Bent Axis Hydraulic Motor

Sauer Danfoss 51V & 51D Series Bent Axis Variable Hydraulic Motors

Product Overview: The Sauer Danfoss 51 series bent axis variable displacement motors are the performance benchmark for global heavy-duty hydrostatic transmission systems. Available in 51V (Cartridge) and 51D (Standard Flange) configurations, this series is engineered specifically for closed-circuit applications. Featured models like the 51D160RD5NE2A5… utilize a significant 45° swashplate angle capability, providing an ultra-wide speed ratio and torque range. From large road millers and pavers to rotary drills and harvesters, the 51 series delivers unparalleled efficiency under extreme loads.

Key Technical Advantages:

• Ultra-Wide Displacement Range: The 45° maximum angle allows the motor to switch smoothly between maximum torque and maximum speed, expanding the machine’s operational velocity.

• Heavy-Duty Pressure Rating: Rated for continuous operation at 480 Bar (7000 PSI) with peak capabilities up to 510 Bar, ensuring stability during steep climbs and heavy shock loads.

• Versatile Control Options: Supports Two-position, Proportional, and Pressure Compensated controls, catering to various levels of electronic or hydraulic system integration.

• High Start-up Efficiency: Optimized spherical valve plates and piston designs ensure high mechanical efficiency during low-speed start-ups, reducing jerkiness and energy loss.

• Space-Saving Cartridge Design (51V): The 51V series integrates directly into planetary gearboxes, significantly reducing the footprint of the final drive assembly.

Detailed Models & Parameters:

• Core Series: Danfoss 51 Series (51V, 51D).

• Full Displacement Matrix: 060, 080, 110, 160, 250 cm³/rev.

• Example Model: 51D160RD5NE2A5ANG0ABA070AAF30300.

• Pressure Ratings: Rated at 480 Bar (7000 PSI); Peak capability up to 510 Bar (7400 PSI).

• Maximum Speed: Up to 4500 – 7000 RPM (depending on displacement and angle setting).

• Target Applications: Concrete mixer drives, roller traction systems, large combine harvesters, and reach stackers.