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D05 Parker D Series Gear Pump

The Parker D05 is a lightweight fixed-displacement external gear pump made of aluminum alloy. It features compact structure, stable performance and high working pressure up to 2500 psi. Designed with SAE standard mounting and shaft configuration, it runs smoothly within wide speed range. Widely used in small hydraulic power units, machinery auxiliary hydraulic systems and lubrication systems for reliable long-term operation.
  • D05

  • Green Hydraulic

  • D05

  • 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

  • 1 set

Availability:
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Product Description

D05 Gear Pump  Overview

The Parker D05 is a compact, high-performance fixed-displacement external gear pump engineered for space-constrained hydraulic systems that demand reliable light-to-medium pressure output with exceptional efficiency. Featuring a lightweight yet robust aluminum alloy construction, the D05 is specifically designed to deliver a high power-to-weight ratio, making it an ideal choice for direct mounting to small power units, auxiliary circuits, and compact mobile equipment where space is at a premium and performance is non-negotiable.

D05

Features and Benefits

  • Rugged High-Strength Aluminum Construction:
    The D05 is built with precision-machined, high-grade aluminum alloy bodies and covers, offering an optimal balance of structural rigidity and low weight compared to cast iron alternatives. This lightweight construction minimizes overall system mass while ensuring stable performance and extended service life in demanding work environments.
  • Pressure-Compensated Sleeve Bearing Design:
    Utilizing advanced pressure-loaded sleeve bearings instead of roller bearings, the D05 offers an increased bearing surface area that excels in medium-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 continuous use.
  • Advanced Pressure-Balanced Wear Surfaces:
    Equipped with precision-engineered pressure-balanced end plates, the D05 automatically optimizes 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.
  • Reliable Medium-Pressure Capability:
    Despite its compact footprint, the D05 is engineered to handle continuous operating pressures of up to 2,500 psi (172 bar). Its precision-ground gears and tight-tolerance components allow it to power auxiliary actuators and small hydraulic circuits with smooth, reliable flow.
  • Modular Versatility and Installation Flexibility:
    The D05 offers a fixed displacement of 1.87 cc/rev and supports standard SAE “AA” two-bolt mounting options. With a standard side-porting design, it provides unmatched installation flexibility for cramped chassis environments and specialized mobile applications, including agricultural equipment, material handling machinery, and small power units.

Specifications

Model Codes

D05(1)

Technical Data

Parameter Specification
Displacement 1.87 cc/rev (0.114 in⊃3;/rev)
Continuous Pressure 172 bar (2,500 psi)
Intermittent Pressure 190 bar (2,750 psi, short‑term)
Speed Range 500–4,000 rpm (1,000–3,000 rpm recommended)
Flow @ 1000 rpm (Theoretical) 1.9 L/min (0.5 GPM)
Flow @ 3000 rpm (Theoretical) 5.7 L/min (1.5 GPM)
Flow @ 4000 rpm (Theoretical) 7.6 L/min (2.0 GPM)
Body Material High‑strength aluminum alloy
Construction 3‑piece, pressure‑loaded sleeve bearing design
Mounting Flange SAE “AA” 2‑bolt
Standard Shaft 1/2 in (12.7 mm) keyed shaft
Porting (Standard) Side inlet / side outlet, 7/8‑14 × 3/4‑16 UNF
Rotation (Standard) Clockwise (CW); CCW optional
Weight 0.9–1.4 kg (2–3 lb)
Operating Temperature -40°C to +85°C (-40°F to +185°F)
Standard Seals NBR (nitrile rubber)
Inlet Conditions Max vacuum: 10 inHg @ 1200 rpm; 5 inHg @ 3000 rpm
Max positive inlet pressure: 1.4 bar (20 psi)
Recommended Filtration SAE Class 4
Compatible Fluids Mineral oil, anti‑wear hydraulic fluids; glycol/water mixtures (with DU bushings); phosphate esters (with FPM seals)

D05 Hydraulic Gear Pump Installation Dimensions

D05(2)D05(3)


Applications

Applications

The Parker D05 gear pump provides a compact, lightweight hydraulic power solution specifically tailored for space-constrained mobile and small-scale systems where high power-to-weight ratio and reliable medium-pressure performance are essential.

  • Small Hydraulic Power Units:

    The D05 is ideal for compact power packs used in portable tools, bench-top presses, and mini-lifts, where its small footprint and low weight allow for easy integration into tight spaces.
  • Material Handling Equipment:It is commonly used in pallet jacks, scissor lifts, and light-duty forklifts, providing efficient power for lifting and lowering operations while maintaining consistent performance under frequent use.

  • Agricultural Machinery:

    Frequently employed in farm implements such as seeders, fertilizer spreaders, and auxiliary steering systems, where it handles variable loads and common fluid contamination in outdoor environments.

  • Automotive and Truck Auxiliary Systems:

    Perfect for powering tailgate lifts, tilt-bed mechanisms, and small crane attachments on light trucks, offering reliable hydraulic power that integrates well with vehicle-mounted power take-off (PTO) systems.

  • Industrial Lubrication and Circulation:

    Suitable for low-pressure lubrication systems in machine tools, gearboxes, and conveyor lines, ensuring a steady flow of oil for continuous equipment protection.

  • Specialized Lightweight Mobile Equipment:
    Used in aerial work platforms, compact construction tools, and recreational vehicle (RV) leveling systems, where its aluminum construction minimizes overall system weight without sacrificing durability.

Vane Pump Application

Factory&FAQ

Packaging & Delivery.

Shipping Methods

D05 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.


D05 Gear Pump  FAQ:

1. What are D05 series gear pumps?

The Parker D05 is a compact, fixed-displacement external gear pump, part of Parker’s D Series. Featuring a lightweight yet robust high-strength aluminum alloy construction, it is specifically engineered for small, space-constrained hydraulic systems that require a high power-to-weight ratio and reliable medium-pressure performance.

2. What makes the D05 different from standard gear pumps?

The D05 is built for efficiency and compactness in applications where larger pumps are impractical:
  • Lightweight Aluminum Housing: Unlike cast iron pumps, the D05’s precision-machined aluminum body minimizes overall system weight, making it ideal for mobile and portable equipment.

  • Pressure-Loaded Sleeve Bearing Design: It uses pressure-balanced sleeve bearings instead of traditional roller bearings, offering better tolerance to fluid contamination and thermal shock while maintaining high volumetric efficiency.

  • Modular Porting & Mounting: With standard side-porting and SAE “AA” 2-bolt mounting, it provides easy integration into tight chassis environments and small power units.

3. What is the working pressure range of D05 pumps?

The D05 is a compact medium-pressure specialist:

  • Continuous Pressure: Up to 2,500 PSI (172 bar).

  • Intermittent/Peak Pressure: Up to 2,750 PSI (190 bar, short-term duty).

This pressure rating makes it ideal for auxiliary hydraulic circuits, light-duty lifting, and compact power units.

4. Can D05 pumps replace other brands?

Yes, the D05 is a high-quality, cost-effective alternative to other compact gear pumps. It is often used as a replacement or upgrade for:

  • Other Parker/Commercial Intertech D-series models (same footprint, varying displacements).

  • Small aluminum-body gear pumps from competing brands (e.g., similar SAE-AA mounted pumps).

To ensure a successful swap, verify the Mounting Flange (SAE AA), Shaft Type (1/2" keyed), and Displacement (1.87 cc/rev) to match your existing system.

5. What hydraulic oil is suitable for D05 gear pumps?

To protect the sleeve bearings and gears, the following is recommended:

  • Oil Type: Premium mineral-based anti-wear (AW) hydraulic fluids.

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

  • Filtration: A minimum filtration level of ISO 4406 18/16/13 is recommended to prevent abrasive particles from damaging internal components.

6. What is the typical speed range of D05 pumps?

The D05 operates efficiently across a wide range:

  • Operating Speed: 500–4,000 RPM.

  • Recommended Range: 1,000–3,000 RPM for optimal efficiency and service life.

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

D05 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.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.


2.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.


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

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


4.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
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