What Is the Danfoss D1P?
The Danfoss D1P piston pump is a high-power variable displacement axial piston pump designed primarily for open-circuit hydraulic systems. It is intended for heavy-duty mobile and industrial machines that require high hydraulic flow, high pressure capability and dependable operation under demanding working conditions.
The D1P uses a swashplate and servo-controlled design. Its angled piston bore arrangement improves self-priming capability, while the spherical valve plate and cylinder block interface support stable cylinder block rotation and high hydraulic efficiency.
The pump family can be configured with a broad selection of hydraulic and electro-hydraulic controls, allowing machine manufacturers and hydraulic system engineers to optimize pump output according to pressure, power, load-sensing and displacement requirements.
Built for High-Demand Hydraulics
D1P Performance Range
| Displacement | Maximum Working Pressure | Maximum / Rated Speed | Theoretical Flow* | Mounting |
|---|---|---|---|---|
| 65 cc/rev | 350 bar | Up to 2,550 rpm continuous | Approx. 165 L/min | ISO 3019 125-4 |
| 130 cc/rev | 350 bar | Up to 2,200 rpm continuous | Approx. 286–325 L/min | SAE J744 152-4 (D) |
| 145 cc/rev | 350 bar | Up to 2,200 rpm continuous | Approx. 319–363 L/min | SAE J744 152-4 (D) |
| 160 cc/rev | 350 bar | Up to 2,200 rpm continuous | Approx. 352–400 L/min | SAE J744 152-4 (D) |
| 193 cc/rev | 350 bar | Up to 2,200 rpm continuous | Approx. 425–483 L/min | SAE J744 165-4 (E) |
| 260 cc/rev | 350 bar | Up to 2,300 rpm with impeller | Approx. 598 L/min with impeller | SAE J744 165-4 (E) |
Flexible Controls for Different Hydraulic Requirements
Mechanical Power Control
Helps manage pump output according to available input power and machine requirements.
Pressure Compensated
Adjusts pump displacement in response to hydraulic pressure requirements.
Load Sensing
Supports efficient flow delivery according to system load demand.
Electric Proportional
Provides electronically controlled displacement adjustment for modern machine control systems.
Remote Pressure Control
Allows pressure compensation to be integrated with a remotely positioned hydraulic control arrangement.
Why Choose D1P?
Industries & Equipment
Design Details That Support Long-Term Performance
Servo-Controlled Swashplate
The swashplate and servo-controlled architecture provides variable displacement operation and supports accurate hydraulic output control.
Improved Self-Priming
The angled piston bore design is engineered to improve self-priming characteristics and support reliable pump operation.
Stable Cylinder Block Rotation
The spherical valve plate and cylinder block interface contribute to stable rotation and high efficiency.
Integral Charge Pump Option
Selected configurations can include an integral charge pump to support higher-speed operation and cold-start performance.
Optimized Bearing Design
The optimized cradle bearing design contributes to pump durability and service life.
PLUS+1 Compatibility
D1P supports PLUS+1 compliant control solutions for integration into modern mobile machine control architectures.
Danfoss D1P Piston Pump Questions & Answers
What type of pump is the Danfoss D1P?
The Danfoss D1P is a high-power variable displacement axial piston pump designed primarily for open-circuit hydraulic systems.
What D1P displacements are available?
Danfoss lists 65, 130, 145, 160, 193 and 260 cc/rev displacement options for the D1P family. Availability and configuration should be verified according to the required model and market.
What is the maximum pressure of the D1P?
The D1P family is specified for up to 350 bar maximum working pressure, with peak pressure capability up to 400 bar for intermittent conditions, subject to the exact configuration and operating requirements.
Is the D1P suitable for mobile hydraulic equipment?
Yes. Danfoss specifically positions the D1P for heavy-duty mobile applications, including construction, mining, drilling, material handling and other high-power hydraulic machinery.
What controls are available for the D1P?
Available control concepts include mechanical power control, electric power control, pressure compensated control, remote pressure compensated control, electric proportional displacement control and load sensing control.
Can the D1P use an integral charge pump?
Selected D1P configurations can be equipped with an integral charge pump. This option can support higher-speed operation and improved cold-start performance.
Can the D1P drive another hydraulic pump?
Yes. Suitable D1P configurations provide full through-drive capability for adding compatible axial piston pumps or gear pumps.
What information should I provide when sourcing a D1P replacement?
Provide the complete model code whenever possible. Displacement, rotation, control type, shaft, mounting flange, auxiliary drive, pressure settings and other configuration details are important when identifying the correct Danfoss D1P replacement pump.
Select by Complete Model Configuration
When purchasing a Danfoss D1P hydraulic pump, displacement alone is not enough to guarantee compatibility. Buyers should verify rotation direction, control type, shaft configuration, mounting flange, auxiliary drive, endcap arrangement, pressure settings and other model-code details before placing an order.
A High-Power Solution for Modern Hydraulic Systems
The Danfoss D1P high power axial piston pump combines variable displacement technology, high pressure capability, flexible controls and robust mechanical construction. With multiple displacement options and application-specific configurations, the D1P is well suited to demanding construction machinery, mining equipment, drilling systems, material handling equipment, marine and offshore machinery and oilfield applications. For overseas B2B buyers, accurate model-code matching is essential for selecting the correct D1P pump and ensuring reliable system integration.
