Danfoss FRR Series Hydraulic Piston Pump Excavator Parts Machinery Hydraulic Pump

Wuhan Xinlaifu Hydraulic Equipment Co., Ltd. is one of the leading manufacturers and suppliers of danfoss frr series hydraulic piston pump excavator parts machinery hydraulic pump in China. With abundant experience, we warmly welcome you to buy high quality customized products at competitive price from our factory. Also, OEM&ODM service is available.

Type	FRR074 Series (e.g. FRR074BBS3120...)
Brand	XLF Hydraulic
Displacement	74 mL/r
Rated Working Pressure	31 MPa (310 bar)
Intermittent Peak Pressure	35 MPa (350 bar) / Max 40 MPa (400 bar)
Mount Flange	SAE A Standard Flange
Port Size	Suction: SAE 1-1/2" Flange; Pressure: SAE 1-1/4" Flange
Built-in Parts	9-piston swash plate assembly, cylinder block, control valve module, valve plate, NBR/FKM shaft seal, pressure compensator (optional)
Recommended Oil	ISO VG 32~68 mineral-based anti-wear hydraulic oil (ISO 4406: 20/17/14 or NAS 1638 Class 8 required)

Model FRR074 / FRR090 are heavy-duty variable displacement axial piston pumps for open circuits, belonging to the FRR Series, with customizable production coding to accommodate a wide range of specification variants, including different control types, pressure ratings, and seal configurations. Adopting optimized swash-plate variable displacement technology and a robust valve plate design that ensures stable cylinder block operation under high pressure, these pumps serve as direct aftermarket replacements for original OEM pumps of the corresponding FRR specifications.

The FRR Series represents premium high-efficiency piston pumps, delivering stable high flow and high-pressure output (260-310 bar continuous working pressure, 400 bar peak pressure) within a compact, power-dense casing. Under severe service environments including open-pit mining, construction cranes, concrete pumping, road construction, and agricultural harvesting operations, these pumps feature outstanding pressure resistance and long-term operational durability, serving as the preferred core hydraulic power source for heavy-duty machinery such as excavators, crawler cranes, concrete pump trucks, roadheaders, road construction equipment, and agricultural harvesters. Designed with standard SAE heavy-duty mounting flanges and spline shafts, along with a reinforced housing structure, the entire series withstands frequent heavy shock loads and continuous mechanical vibration, adapting to the harsh operating conditions of various mobile and industrial equipment.

This pump range supports a variety of customized structural variants, including modified through-drive configurations and custom shaft/spline designs purpose-built to pair with customer-assembled planetary gear reducers and integrated hydraulic transmission assemblies. Custom versions can be engineered to eliminate conventional intermediate components, directly engaging with matched gear sets of peripheral drive systems via dedicated spline profiles and tooth configurations. They are ideal for hydraulic systems with limited installation space, or equipment adopting integrated modular and lightweight design concepts, including e-hydraulic power module applications in electrified construction machinery.

1. Integrated Structure Design - An Ideal Choice For Integrated Drive & Electrified Systems

Danfoss FRR Series Hydraulic Piston Pump FRR074 / FRR090 adopts optimized integrated structure design, which is a dedicated configuration for integrated drive and electrified hydraulic systems:

Integrated connecting structure: Custom spline and shaft end design are adopted. External radial loads are shared by the matching motor or reducer assembly on the user's equipment; Direct integration with gear reducers & drive motors: The pump can be directly mounted to planetary gearboxes or drive motor assemblies without additional support bearings or couplings, perfectly matching the eHydraulic power module; Compact axial dimension: The streamlined pump body greatly shortens the overall axial length, making it particularly suitable for equipment with extremely limited installation space; Easy installation: Standard SAE heavy-duty mounting dimensions and multi-bolt fixed flange layout enable seamless matching with user equipment and ensure excellent concentricity during operation. Besides, the built-in through-drive shaft supports multi-pump tandem installation, further expanding system configuration flexibility.

2. FRR Series - High Performance Open Circuit Axial Piston Hydraulic Pump

The Danfoss FRR Series stands for premium high-performance axial piston hydraulic pumps for open circuits in Danfoss' product lineup:

High power density: Delivers stable high flow and high-pressure output within a compact housing. FRR074 features 310 bar continuous working pressure and FRR090 features 260 bar continuous working pressure, with both models reaching a maximum peak pressure of 400 bar; Advanced swash plate & cylinder block assembly: Equipped with optimized swash plate bearings and reinforced 9-piston cylinder block structure, it achieves higher mechanical efficiency and strong resistance to shock and vibration; High-stability valve plate flow distribution technology: The high-rigidity valve plate effectively prevents cylinder block tilting, features automatic wear compensation, maintains excellent volumetric efficiency (≥95%) in long-term operation and reduces pressure loss effectively; Harsh condition adaptability: Capable of working stably under rated continuous pressure and 400 bar peak pressure, adapting to hydraulic oils of different viscosities and frequent displacement adjustment. It performs reliably on construction, mining, marine, road and agricultural machinery under severe working conditions.

1. Can you provide quality certification for Danfoss hydraulic pumps and motors?

Yes. We can supply formal test reports and actual running test videos for all Danfoss hydraulic pumps and motors to verify product performance and

quality.

2. Are your Danfoss parts original new products?

All items are 100% brand new original genuine parts. A large number of mainstream models are available in stock for fast delivery.

3. Can you adjust stock units to fit my working condition?

Sure. We can modify in-stock Danfoss pumps or motors according to your site parameters to achieve perfect matching and normal operation.

4. Do you support discontinued Danfoss model replacement service?

We offer professional matching selection scheme and compatible replacement solution for obsolete stopped production models.

5. How fast can I get my ordered hydraulic components?

In-stock models can be shipped out within short time. Custom modified products will be finished and delivered efficiently.

6. Is it hard to replace old Danfoss hydraulic motor or pump?

We will recommend the most compatible replacement model and offer technical guidance for easy installation and replacement.

7. What guarantee can you offer on product stability?

All original parts own stable performance. Complete test data and videos can be provided before shipment for your confirmation.

8. Can you help me confirm the correct model for my machine?

We support professional model selection, stock modification and discontinued model upgrade solution to meet your equipment demands.

Table 1 Core Pressure, Displacement, Speed & Efficiency

Table 2 Speed vs Theoretical Flow & Hydraulic Power

Table 3 Hydraulic Fluid Requirements

Table 4 Mechanical Structure & Mounting Parameters

Table 5 Control System Performance

Table 6 Ambient & Protection Parameters

Table 7 Weight, Noise, Leakage & Service Life

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