You are here: Home » Products » Hydraulic Pump » Hydraulic Gear Pump » DE1R Danfoss D Series Gear Pump

loading

DE1R Danfoss D Series Gear Pump

The Danfoss DE1R is a heavy-duty cast iron fixed-displacement external gear pump from the Danfoss D Series. Designed for mobile and industrial hydraulic systems, it delivers high continuous operating pressure, high volumetric efficiency, compact structure and long service life.
  • DE1R

  • Green Hydraulic

  • DE1R

  • Standard export carton/plywood case

  • Yes

  • ISO9001,CE

  • • Industrial • Energy • Government (Non Aerospace) • HVAC • Mobile • Natural Resources • Transportation (Non Aerospace)

  • 1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry

  • Key Shaft and Spline shaft

Availability:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button

Product Description

DE1R Gear Pump  Overview

The Danfoss DE1R is a high-performance, fixed-displacement gear pump engineered for compact, high-pressure hydraulic systems that demand maximum durability and reliable power output. Featuring a rugged three-piece cast iron construction, the DE1R is specifically designed to deliver an exceptional power-to-weight ratio, making it an ideal choice for direct mounting to truck Power Take-Offs (PTOs) and mobile equipment where space is limited and performance is non-negotiable.

DE1R

Features and Benefits

  • Rugged Three-Piece Cast Iron Construction:
    The DE1R is built with high-tensile, heavy-duty cast iron bodies and covers, providing superior structural rigidity compared to aluminum alternatives. This robust construction minimizes internal deflection and mechanical fatigue under high-pressure duty cycles, ensuring stable performance and extended service life in grueling work environments.
  • High-Performance Pressure-Balanced Bushing Design:
    Utilizing advanced, pressure-balanced bushings instead of roller bearings, the DE1R offers an increased bearing surface area optimized for high-pressure operations. This design is inherently more tolerant of fluid contamination and thermal shock, maintaining high volumetric efficiency while protecting the pump from premature wear during intensive use.
  • Advanced Pressure-Balanced Wear Plates:
    Equipped with sophisticated axial compensation technology, the DE1R features pressure-balanced wear plates that automatically optimize internal clearances between the gear faces and the housing. This minimizes internal fluid bypass and friction, ensuring exceptional mechanical efficiency and consistent power delivery across all operating temperatures.
  • Superior High-Pressure Capability:
    Despite its compact footprint, the DE1R is engineered to handle continuous operating pressures of up to 4,000 psi (276 bar). Its high-strength alloy steel gears and precision-machined components allow it to power high-force actuators and complex hydraulic circuits with smooth, reliable flow.
  • Modular Versatility and Installation Flexibility:
    The DE1R series offers a versatile range of displacements (from 7.0 to 45.1 cc/rev) and supports standard SAE “A” and “B” mounting flange options. With multiple shaft configurations (including spline and keyed designs) and both side/rear porting options, it provides unmatched installation flexibility for cramped chassis environments and specialized mobile applications.

Specifications

Model Codes

DE1R(1)DE1R(2)DE1R(3)DE1R(4)DE1R(5)DE1R(6)DE1R(7)DE1R(8)

Technical Data

Parameter Specification
Pump Type Fixed-displacement, external gear pump
Series Rugid Cast Iron D Series (DE1R = single pump)
Construction 3-piece cast iron housing
Mounting SAE “A” or “B” flange (2-bolt)
Shaft Drive 9T spline (SAE A), 13T spline (SAE B), or keyed shaft
Porting Side or rear ports (SAE ORB thread)

DE1R Hydraulic Gear Pump Installation Dimensions

DE1R(9)


Applications

Applications

The Danfoss DE1R series provides a rugged, high-pressure power solution specifically tailored for mobile and truck-mounted applications where space is at a premium and exceptional mechanical strength is required:
  • Utility & Service Vehicles:
    A primary choice for truck-mounted cranes, aerial lifts, and bucket trucks, where the compact DE1R frame integrates easily with Power Take-Off (PTO) units to deliver reliable lifting and positioning power under continuous load.
  • Construction & Road Equipment:
    Optimized for skid-steer loaders, small excavators, and compaction machinery, where the cast iron construction and pressure-balanced design ensure long-term durability against high shock loads and frequent pressure cycles.
  • Commercial Refuse & Recycling:
    Widely used in refuse trucks and waste handling equipment that require high-cycle, high-pressure stability to manage compaction, lifting, and unloading operations reliably.
  • Material Handling & Logistics:
    Ideal for truck tail-lifts, hydraulic ramp systems, and dock equipment, offering a durable and space-efficient power source that maintains high efficiency under heavy, frequent load conditions.
  • Agricultural Equipment:
    Frequently employed in tractors, sprayers, harvesters, and implement steering systems, where the DE1R handles variable load shocks and fluid contamination common in outdoor field environments.
  • Industrial & Stationary Hydraulics:
    Suited for hydraulic power units, machine tools, and lubrication systems requiring continuous high-pressure output, low noise, and long service life in demanding industrial settings.

Vane Pump Application



Factory&FAQ

Packaging & Delivery

Shipping Methods

DE1R pumps are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the pump from environmental damage.

Custom Crates: For larger, heavier pumps, ensuring safe handling.

Documentation: Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.


DE1R Gear Pump  FAQ

1. What are DE1R gear pumps

The DE1R is a high-performance, fixed-displacement pressure-balanced gear pump from the Danfoss Rugid D Series. Featuring a rugged three-piece cast iron construction, it is specifically engineered for compact hydraulic systems that require high structural integrity and reliable high-pressure power output, particularly when direct-mounted to truck Power Take-Offs (PTOs) and mobile machinery.

2. What makes the DE1R different from standard gear pumps

The DE1R is built for durability in demanding mobile environments where aluminum pumps may fail:
  • Rugged Cast Iron Housing: Unlike aluminum pumps that can suffer from deflection or "body stretching" at high pressures, the DE1R’s cast iron frame maintains tight internal clearances and extends service life under high-pressure duty cycles.

  • Pressure-Balanced Bushing & Wear Plate Design: It uses advanced pressure-balanced components that provide superior bearing surfaces and axial compensation, offering greater resistance to thermal shock, fluid contamination, and wear than typical aluminum-body pumps.

  • High Power-to-Weight Ratio: Despite its robust construction, the DE1R delivers exceptional power density in a compact footprint, making it ideal for space-constrained installations.

3. What is the working pressure range of DE1R pumps

The DE1R is a compact high-pressure specialist. Depending on the specific displacement, the series typically handles:

  • Continuous Pressure: Up to 4,000 PSI (276 bar) for displacements ≤ 32 cc/rev; up to 3,500 PSI (241 bar) for larger displacements.

  • Intermittent/Peak Pressure: Up to 4,400 PSI (303 bar) for displacements ≤ 32 cc/rev; up to 3,840 PSI (265 bar) for larger displacements.

This robust pressure rating makes the DE1R ideal for driving high-force lifting, compaction, and auxiliary systems on professional-grade utility and construction vehicles.

4. Can DE1R pumps replace other brands

Yes, the DE1R is a high-quality alternative to other premium compact cast iron pumps. It is often used as a replacement or upgrade for:

  • Parker/Commercial Intertech: P30, P31, and P50 Series

  • Eaton/Vickers: 20, 25, and 35 Series

  • Metaris: MH315 and MH325 Series

  • Permco: P1900, P2100, and P2500 Series

To ensure a successful swap, verify the Mounting Flange (SAE A or B), Shaft Type (9 or 13-tooth spline, or keyed), and Displacement (cc/rev) to match your existing system.

5. What hydraulic oil is suitable for DE1R gear pumps

To protect the precision bushings, wear plates, and hardened steel gears, the following is recommended:

  • Oil Type: Premium mineral-based hydraulic fluids with strong Anti-Wear (AW) additive packages.

  • Viscosity: Standard ISO VG32 to VG68. The optimal operating range is 100 to 150 SUS (20 to 30 cSt), though it can handle cold starts up to 2,000 SUS (430 cSt).

  • Filtration: Cleanliness is vital for bushing and wear plate lubrication. A minimum filtration of ISO 4406 18/16/13 is recommended to prevent abrasive particles from damaging internal components.

6. What is the typical speed range of DE1R pumps

The DE1R series is designed for a wide operating speed range:

  • Continuous Speed Range: 600 to 3,400 RPM (max 3,400 RPM for displacements ≤ 25 cc/rev; 3,000 RPM for larger displacements).

  • Minimum Recommended Speed: 600 RPM, to ensure adequate lubrication and prevent cavitation.

  • Note: Operating above the recommended maximum speed may shorten service life and reduce efficiency, while operating below the minimum can cause insufficient lubrication and noise.

7. Do you provide OEM or customized services

Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.

8. How can I get a quotation quickly

Please provide the following details:

  • Model or displacement

  • Working pressure

  • Speed

  • Quantity
    We will reply within 12 hours with a competitive quotation.


Certifications & Quality Assurance

DE1R pumps are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.



Green Hydraulic Patent Certificate

FAQ

1.How does the variable displacement work?

The pump's flow is adjusted by changing the angle of an internal swash plate. As the swash plate angle changes, the stroke length of the pistons varies, which in turn changes the volume of fluid displaced per rotation, allowing the flow rate to adapt to the system's needs.


2.What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.


3.What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.


4.Can you make my own brand on the products?

Of course we can. Just send me your logo  we can make it for you.


5.What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).


Unedited footage of the Green Hydraulic Factory

The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.

Unedited footage of the Green Hydraulic Factory

The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.

Unedited footage of the Green Hydraulic Factory

Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.

Unedited footage of the Green Hydraulic Factory3

All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.

Unedited footage of the Green Hydraulic Factory4

To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.

Unedited footage of the Green Hydraulic Factory5

Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.


Green Hydraulic Advantages
Green logo


Previous: 
Next: 

GREEN HYDRAULIC CAN GIVE YOU THE SERVICE AND ATTENTION THAT BIGGER COMPANIES CANNOT

Contact us
If There Are Any Gerreen Machining lssues,
Please Contact Us.
Hydraulic
Application
Why Green
COPYRIGHT © 2025 CHANGZHOU GREEN HYDRAULIC CO., LTD. ALL RIGHTS RESERVED.