Danfoss 51 Series Motor | 51V160 51V250 51D160 51C060 | Variable Displacement Bent Axis Motor

Danfoss 51 Series High-Speed Variable Bent Axis Hydraulic Motors

Product Overview: The Danfoss 51 and 51-1 Series represent the pinnacle of bent axis variable displacement hydraulic motor technology. Specifically engineered for closed-circuit systems, these motors offer exceptional speed capabilities and an expansive displacement range. By precisely adjusting the swashplate angle, the 51 Series achieves a perfect balance between high startup torque and high-speed transit. This category covers the full spectrum from the compact 51D060 to the high-power 51V250, widely utilized in combine harvesters, hydraulic excavators, road roller travel systems, and heavy forestry machinery.

Key Technical Advantages:

• Expansive Variability: Features a high displacement ratio with seamless adjustment down to zero displacement, significantly improving overall machine fuel efficiency.

• High Speed & Pressure Resilience: Bent axis technology allows for peak pressures up to 480 Bar while maintaining higher rated speeds than comparable piston motors.

• Diverse Control Options: Supports hydraulic proportional, electric proportional, and pressure compensated controls (e.g., 2DH logic) for refined and responsive power delivery.

• Compact & Versatile Configurations: Available in 51V (Side ported), 51D (Plug-in), and 51C (Cartridge) frame styles to perfectly fit various mechanical space constraints.

• Target Applications: Agricultural travel drives, construction machine swing drives, industrial winches, and marine hydraulic systems.

Detailed Models & Parameters:

• Core Series: Danfoss 51, 51-1, 51V, 51D, 51C Series.

• Technical Spec Decoding:

  • 51V Series (Side Ported): 51V160, 51V250 (High displacement for heavy-duty drives).

  • 51D Series (Plug-in): 51D060, 51D080, 51D110, 51D160, 51D250 (Plug-in design for space optimization).

  • 51C Series (Cartridge): 51C060 (High integration for gearbox nesting).

  • Full Code Example: 51V250RF2DHZBCHC2NNN110AANN400 (Featuring 2DH proportional control, specific shaft ends, and seal sequences).

• Performance Specs:

  • Displacement Range: 60cc, 80cc, 110cc, 160cc, 250cc.

  • Max Operating Pressure: 450 – 480 Bar.