Bosch Rexroth CETOP 5 Valves

Bosch Rexroth CETOP 5 Valves

Bosch Rexroth Directional Spool Valves, direct operated, with solenoid actuation WE

The Bosch Rexroth Valve type WE is a direct operated, directional spool valve with solenoid actuation. It controls start, stop and direction of the flow. Bosch Rexroth Directional Spool Valves connect or isolate the connections by moving a control spool within a housing bore.

Bosch Rexroth CETOP 5 WE 10...E Directional Spool Valves - 5x series

Neilson Hydraulics supplies the following Bosch Rexroth CETOP 5 Valves:

Size 10:

  • Component Series 5X
  • Maximum operating pressure 350 bar
  • Maximum flow 150 I/min


  • 4/3-, 4/2- or 3/2-way version
  • High-power solenoid
  • Porting pattern according to ISO 4401
  • Wet-pin DC Solenoids with detachable coil
  • The coil can be changed without having to open the pressure-tight chamber
  • Central connection possible via doubling mating connector


Bosch Rexroth CETOP 5 Valves

To enquire about Bosch Rexroth’s Directional CETOP 5 Valves at Neilson Hydraulics, please call 01709 821 002, email: or click on the link below to view our range in our online E-SHOP:

Neilson Hydraulics is a sales partner for Bosch Rexroth Hydraulics. Neilson Hydraulics supplies Bosch Rexroth Directional Valves, Bosch Rexroth Pressure Relief Valves, Bosch Rexroth Pressure Reducing Valves, Bosch Rexroth Check Valves, Bosch Rexroth A10VSO Axial Piston Pumps, Bosch Rexroth Vane Pumps, Bosch Rexroth Filters & Elements, Bosch Rexroth Accumulators, Bosch Rexroth Cylinders, Bosch Rexroth Electronics and Bosch Hydraulic Accessories (Bosch Rexroth Hirschman Plugs, Rectifier Plugs & Coils).

Danfoss MP1 Axial Piston Pumps

Danfoss MP1 Pumps, a new generation of Danfoss Pumps from Danfoss Power Solutions (formerly Sauer Danfoss).

Danfoss MP1 Hydraulic Pump

The Danfoss MP1 Pump has built off years of experience to capture the reliability, modularity and controllability of products you know well. Additionally, the MP1 Pump has added features while maintaining a competitive package size. The result is a pump that is fit for the future.

All controls related to electric options are Danfoss PLUS+1® Compliant. Danfoss PLUS+1® allows you to rapidly develop and customize electronic machine control.


Key features of the Danfoss MP1 Axial Piston Pump include:


Designed for Quality and Reliability

  • Uniform design concept across frame sizes
  • Single piece housing to minimize leaks
  • Technologically advanced kit and servo system
  • Predictable, low friction swashplate bearing for precise machine control

Machine Integration Benefits

  • Industry leading pump length
  • Clean side for easier machine integration
  • Metric and Inch O-ring boss and Split flange (38/45 only) system port interfaces
  • Standard connection interfaces

Greater Total Efficiency

  • Increased pump efficiency
  • Lower control pressure for less power consumption

Control Options

  • Electro-hydraulic control options include:
  • ‒ Electrical Displacement Control (EDC)
  • ‒ Forward-Neutral-Reverse (FNR)
  • Manual displacement control (MDC)
  • Common control across entire family

Expanded Functionality

  • PLUS+1® Compliant control and options
  • Easy integration with Telematics
  • Integrated Flushing valve available (28/32 only)


  • Common control, charge pump and auxiliary pad options
  • Easy and quick conversion to the right configuration


You may also like to read:

Danfoss PVG Combinations

Danfoss PVG 32 Proportional Valve Build & Components




To enquire or speak to our technical team about all our Danfoss hydraulics please contact Neilson Hydraulics on: 01709 821 002 or E: or visit our website

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Hydraulic Motor – An overview

Hydraulic motors are generally one of the largest components of a hydraulic system, which makes ensuring you have the correct part vital to the efficient running of your hydraulic system. These motors convert hydraulic pressure and flow into torque and angular displacement. Hydraulic motors are mechanical rotary actuators that are designed to run hydraulic systems at different speeds and operate at different flow levels. They work in tandem with a hydraulic pump providing the force and supply the motion to move an external load.


What is the difference between a hydraulic motor and pump?


In simple terms, when working together in a hydraulic system, the hydraulic pump converts mechanical energy into fluid energy in the form of oil flow. Once the oil flow reaches the hydraulic motor, the hydraulic motor converts the fluid energy into mechanical energy to perform the physical work.


The most intuitive is the different purpose: hydraulic pump is a device that converts the mechanical energy input by the prime mover into hydraulic pressure energy and is the power element of the hydraulic system; and the hydraulic motor converts the hydraulic energy input from the hydraulic pump into mechanical energy for rotary motion, which drives the load to work, is the executive element of the hydraulic system.

But their working principles are the same, they all rely on the change of the sealed working volume to work. In principle, it should be reversible, that is, any hydraulic pump can be used as a hydraulic motor, and any hydraulic motor can be used as a hydraulic pump.
But this is only a superficial understanding. In fact, only a few hydraulic pumps can be used as hydraulic motors, and only a few hydraulic motors can be used as hydraulic pumps. Why is this? This is because the two have different work requirements, so there must be differences in structure. If the hard requirements can be used in reverse, an extra price will be paid.


The difference between hydraulic pump and hydraulic motor in work requirements:

  • Most users regard hydraulic pumps as components that output flow under a certain pressure, and therefore pay more attention to their volumetric efficiency; while most users regard hydraulic motors as components that output torque under certain pressure. Therefore, more attention is paid to their mechanical efficiency.
  • The pump often works at a stable high speed; while the motor has a wide range of speeds and works at low speeds for a long time.
  • It is usually hoped that the pump can deliver high pressure at the rated speed; and the motor usually reaches the maximum pressure at zero or very low speed.
  • In certain applications, the pump usually has only one rotation direction. Except for the pump in the hydrostatic transmission device, its flow and pressure direction remain unchanged; and most motors require a variable rotation direction, and many motors still It is required to work as a pump when necessary to brake the load.
  • In most systems, the pump works continuously, and the fluid temperature changes slowly; while the motor is left unused for a long time, it will experience sudden temperature changes when it starts to work.
  • Most pumps have a base for installation, and the drive shaft does not bear side load; and the drive shaft of many motors has to bear the radial load from the pulley, sprocket, gear or other directly installed wheel.


You may also like to read:


Bosch Rexroth radial piston pumps

Bosch Rexroth A10 VSO




To enquire or speak to our technical team about all our hydraulic pump and motor  ranges please contact Neilson Hydraulics on: 01709 821 002 or E: or visit our website


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Des-Case Standard Series Desiccant Breathers

Des Case Standard Desiccant Breathers Group Image


Des-Case Standard Desiccant Breathers are a vital step in oil contamination control and the first line of defence against lubricant contamination. Studies have shown 50-70% of lubricant contamination can come from outside the equipment.


As most machines are designed to ‘breathe’, protecting the source of airflow from moisture and particulate contamination is vital. Des-Case Breathers attack the source of contamination, making the products an affordable and cost-effective solution to extend lubricant life and to increase equipment productivity.


Key Benefits:

  • Removes moisture in the headspace of equipment
  • Eliminates rust-forming condensation
  • Prevents sludge deposits and water-contaminated oil
  • Prevents contamination ingress
  • Provides longer lubricant life
  • Reduces wear and tear on equipment, prolongs life


Neilson Hydraulics supplies the following DES-CASE Breathers from the Standard Desiccant Breather range:

DC-BB, DC-1, DC-2, DC-3 & DC-4

Des-Case standard breathers provide simple, yet dependable protection from moisture and particulate contamination in lubricants and equipment across multiple industries and applications. These versatile breathers are five times more effective than the leading non-desiccant breathers, providing optimal defence against humidity for your applications.


Typical Industries:

  • Oil & Gas
  • Storage
  • Manufacturing
  • Mining
  • Power Generation
  • Aviation



  • Totes
  • Transformers
  • Storage Drums
  • Hydraulics


Operating Environments:

  • General Use
  • Lubricant Storage Rooms
  • Indoors
  • Cold Weather Environments



Inside A Des-Case Desiccant Breather:

As wet contaminated air is drawn through the desiccant breather unit, multiple 3-micron polyester filter elements remove solid particulate and the colour-indicating silica gel extracts moisture. When air is expelled from the container, the top foam pad prevents oil mist from contacting silica gel or entering the atmosphere.


Inside a Des Case Desiccant Breather





















1.      Domed Cap

A domed cap allows for better washdown runoff.


2.     Integrated Nylon Standpipe

The integrated standpipe provides excellent vibration resistance and dissipates impact throughout the unit, eliminating weak points. It also allows even airflow distribution throughout the unit, eliminating inaccurate readings of desiccant saturation.


3.     External Ribs

External ribs on shell to create greater durability and grip when installing or replacing breather.


4.      Integrated Drip Ring

An integrated drip ring keeps shedding water from entering the vent holes.


5.     Threaded Mounting

Easily replaces standard filler/breather cap with multi-fit connection or one of several adapters.


6.     Air Vents

Individual air intakes are opened based on flow requirements of the system. Plugs protect unit during shipping and storage.


7.      Foam Pad

Foam filter captures any oil mist and disperses incoming air evenly over filtration and drying areas.


8.     Filter Element

Polyester filter element removes airborne contamination to 3-micron absolute. Unique loops allow particles to release during system exhalation, helping to increase breather life.


9.     Enhanced Seal

An enhanced seal eliminates potential for airflow bypass.



To view the specifications of each product within the Des-Case standard breather range please click on the link below.

Link to data sheet




At Neilson Hydraulics we stock and supply Des-Case so please Visit Neilson Hydraulics E-SHOP  to view the full DES-CASE product range: or call T: 01709 801 002 to speak to a member of our technical sales team.


We supply DES-CASE Standard Desiccant Breathers, DES-CASE Hydroguard® Hybrid Breathers, DES-CASE VentGuard™ Hybrid Breathers, DES-CASE Extreme Duty Breathers, DES-CASE Non-Desiccant Breathers, DES-CASE Breather Adaptor & Accessories.

What Is A Cetop Valve?

Cetop Valve

What is a CETOP Valve?

A CETOP hydraulic directional control valve allows fluid to flow into different paths from single or multiple sources. They are often made up of a spool inside a mechanically or electrically controlled cylinder. The movement of the spool checks or permits movement, thus controlling fluid flow.


CETOP is actually an abbreviation of Comité Européen des Transmissions Oléohydrauliques et Pneumatiques in which CETOP is the European Fluid Power Committee.
Thus, it is:

  • The communication platform for fluid power in Europe.
    · The international umbrella organisation and communication platform for the
    fluid power associations in Europe.




CETOP Valves Different Controls

CETOP Valves can be supplied with different control options:

  • Manual control
  • Electric on/off control
  • Proportional electric control
  • Pneumatic control
  • Hydraulic control
  • Mechanical control



As a Bosch Rexroth distributor, we stock and supply a vast range of Bosch Rexroth directional control valves. From CETOP 3 and CETOP 5 directional on/off, directional proportional, directional high response and directional servo valves.



Bosch Rexroth offer the largest range of on/off, logic, safety and pressure other hydraulic valves – wider than any competitor’s – for all types of applications. From isolator valves and pressure valves to flow control valves and directional cartridge valves, you will find exactly what you need to achieve an optimal solution.


Bosch Rexroth CETOP Valve


You may also be interested in our previous blog on Bosch Rexroth CETOP Valves:

·      Bosch Rexroth Pressure Relief Valves (Pilot Operated)


·      Discover Bosch Rexroth Pressure Reducing ZDR Valves





To enquire about Bosch Rexroth 4WE6 and 4WE10 CETOP Valves and all our Bosch Rexroth Directional Valves and product range, please contact Neilson Hydraulics on: 01709 821 002 or E: or visit our website

What is a Danfoss Actuator?

Danfoss PVE Actuators


What is a Danfoss Actuator? A hydraulic actuator is a mechanical device that uses hydraulics to convert energy into a linear movement. The mechanical energy produced is generally used to lift or press things that require a great deal of energy. Heavy equipment usually relies on several hydraulic actuators to function.


Advantages of Hydraulic Actuators

  • Hydraulic actuators are rugged and suited for high force applications. They can produce forces 25 times greater than pneumatic cylinders of equal size. They also operate in pressures of up to 4,000 psi.
  • A hydraulic actuator can hold force and torque constant without the pump supplying more fluid or pressure due to the incompressibility of fluids.
  • Hydraulic actuators can have their pumps and motors located a considerable distance away with minimal loss of power.


‘Danfoss PVE Series 7 PVG 32 Solenoid offers superior reliability for all conditions’


The Danfoss PVE Series 7 design is based on the existing, highly successful Danfoss PVE series. This technically advanced and highly future-proof solenoid has a number of proven-in-use features that deliver the high reliability expected of a Danfoss Power Solutions product.


The Danfoss PVE Series 7 PVG 32 Solenoid model is 100% compatible with Danfoss Series 4 and fully interchangeable. It will easily replace Danfoss Series 4 providing you with a range of new benefits, including:


  1. Microcontroller with embedded software algorithms –The upgrade to embedded software algorithms ensures increased repeatability and high performance of the Danfoss PVE Series 7 Solenoid.
  2. Robustness from potting and encapsulation –The robustness of the Danfoss PVE Series 7 is further ensured by extensive and proven potting competence of Danfoss, and the superior corrosion protection on all metal parts. Moreover, encapsulation makes sure the electronics are completely sealed, and that nothing will interfere with the performance – even in the toughest conditions.
  3. Increased diagnostic coverage –The enhanced spool position sensor with dual demodulator, increases the diagnostic coverage and makes the Danfoss PVE Series 7 even more safe and reliable.
  4. Robust in extreme conditions from -40 to +90 °C –The Danfoss PVE Series 7 has an increased temperature range which makes it ready for the toughest conditions anywhere in the world.
  5. Extreme control –The precision and performance of the Danfoss PVE Series 7 is second to none. Hydraulic motors and cylinders have never been controlled more accurately than with the Danfoss PVE Series 7.


Neilson Hydraulics is an official sales partner for Danfoss Power Solutions (formerly Sauer Danfoss).


To enquire about Danfoss PVE Series 7 PVG 32 Solenoids, please contact Neilson Hydraulics on: 01709 821 002 / E: or visit our website at: 


Neilson Hydraulics supplies Danfoss PVG 32 Proportional Valve Components, including Danfoss Inlet Sections, Danfoss Valve Bodies & Covers, Danfoss Solenoids (Danfoss PVEA, Danfoss PVEH, Danfoss PVEM & Danfoss PVEO Actuators), Danfoss End Plates, Danfoss Bolt Kits, Danfoss Mechanical Handle Assembly, Danfoss Standard Flow Control Spools, Danfoss Orbital Motors, Danfoss H1 Pumps, Danfoss H1 Motors and Danfoss Series 45 Open Circuit Axial Piston Pumps. We have been a Danfoss Distributer in the UK for over 30 years and have excellent technical knowledge of the range.

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Discover Neilson Hydraulics Power Packs

Your Hydraulic People – at Neilson Hydraulics we specialise in designing and manufacturing an extensive range of Hydraulic Power Units. We manufacture custom-made hydraulic power units than can be built strictly in accordance with client specifications, offering a complete hydraulic solution from concept to completion. We can also provide repeat hydraulic power units, as well as hydraulic power units for specialist projects. We have strong technical abilities in CAD, SolidWorks, system controls and hydraulic circuit design.

Image of a 3D Power pack design by Neilson Hydraulics
Neilson Hydraulics also offers a standard range of hydraulic power units, including:

  • Budget range
  • Mid-range
  • Medium Pressure range
  • High Pressure range
  • Hydrostatic Closed Loop range



System features:

  • Pressures 210 BAR
  • Flow 200 LPM
  • Aluminium or cast iron gear pump
  • Electric motor
  • Bell housing / Drive coupling
  • Hydraulic reservoir and accessories
  • CETOP control valves or manual proportional
  • Return filtration


MID Range

System features:

  • Pressures 250 BAR
  • Flow 60 LPM
  • Internal gear pump
  • Electric motor / anti vibration feet
  • Bell housing / Drive coupling
  • Hydraulic reservoir and accessories
  • CETOP control valves or manual proportional
  • Pressure and return filtration



System features:

  • Pressures 280BAR
  • Variable delivery axial piston pump
  • Electric motor / anti vibration feet
  • Bell housing / Drive coupling
  • Hydraulic reservoir and accessories
  • CETOP control valves or manual proportional
  • Pressure and return filtration



System features:

  • Pressures 420BAR
  • Variable delivery piston pump
  • Fixed or variable delivery axial piston motor
  • Electric motor-Diesel engine or prop shaft drive
  • Bell housing / Drive coupling
  • CETOP control valves or solenoid operated proportional valves
  • Pressure and return filtration



System features:

  • Pressures 420BAR
  • Variable delivery piston pump
  • Fixed or variable delivery axial piston motor
  • Electric motor-Diesel engine or prop shaft drive
  • Bell housing / Drive coupling
  • Hydraulic reservoir and accessories
  • Oil Cooler
  • Filtration


To enquire about our range of Power Packs, please call our Sales Team on 01709 821 002 or email: Visit:

What is a Slewing Ring?


IMO Slewing Ring




What is a Slewing Ring? Slewing Rings are large diameter antifriction bearings for the simultaneous transmission of axial and radial forces as well as tilting moments. They replace traditional solutions with fixed and floating bearings as well as king pin bearings. Frequently, this results in bearings with axial/radial bearing combinations with one bearing point. This can significantly simplify the design of the mounting structure and the installation of the bearings, which in turn reduces effort and costs.


Cost-effective and tried-and-tested, IMO antifriction bearings are available as:


  • Ball slewing rings, roller slewing rings, and ball-roller combination slewing rings.
  • Four-point bearings, double four-point bearings/eight-point bearings, flange bearings, wire race bearings, cross roller bearings.
  • Segmented slewing rings.
  • Gear rims.
  • External gearing, internal gearing, or without gearing.
  • Diameter ranging from 100 mm to 6000 mm.
  • With cages (steel, brass, or plastic) or spacers (brass or plastic).
  • With standard seals or specially produced special seals.
  • Optionally with induction-hardened raceways.
  • Different corrosion protection coatings possible.


IMO Slewing Rings have mounting holes and a sealed raceway system with grease lubrication. They can be combined with motors, pinions, and planetary gears. Functions and parts of the mounting structure – such as attached bearing rings – can be integrated.

What Applications Are Slewing Rings Used In?

IMO Slewing Rings are used in numerous applications as machine elements that can simultaneously transmit axial and radial forces, as well as tilting moments. The application spectrum ranges from large triple-row roller slewing rings for tunnel construction to small ball slewing rings for medical technology. However, IMO Slewing Rings are used in the bottling and filling industry, opencast mining, bulk handling, and transport engineering. In the field of renewable energies, IMO blade bearings, yaw bearings, and main bearings are used in wind turbines or as rotor blade bearings in tidal stream systems.


Other examples of applications for IMO Slewing Rings in the industrial sector are:


·       Drilling

·       Factory Automation and Intralogistics

·       Marine Cranes

·       Public Transportation

·       Ship Deck Equipment

·       Tunnel Boring

·       And many more applications…


Please also read, IMO Slewing Ring for Cranes and Slewing Rings for Construction




Neilson Hydraulics is an IMO UK distributor. Neilson Hydraulics supplies IMO Slew Drives, including IMO Slew Drives WD Series (WD-L & WD-H) and IMO Slew Drives SP Series (SP-I & SP-H), as well as IMO Slewing Rings, including IMO Ball Slewing Rings, IMO Roller Slewing Rings and IMO Ball-roller Combination Slewing Rings.


To enquire about IMO Slew Drives and IMO Slewing Rings, please contact Neilson Hydraulics on: 01709 821 002 / E: or visit our website at:

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What are the Types of Accumulators?

What are the types of accumulators? The two main types of hydraulic accumulators are Diaphragm and Bladder-type accumulators. A hydraulic accumulator is a pressure vessel that performs many tasks in a hydraulic system. They are used to maintain pressure, store and recapture energy, reduce pressure peaks, power chassis suspensions, and dampen shock, vibration and pulsations.


General information

One of the main tasks of hydro-pneumatic accumulators is e.g., to accept certain volumes of pressurised liquids of hydro-pneumatic installations and to return them to the system if required.


As the liquid is pressurised, the hydro-pneumatic accumulators are treated like pressure vessel and must be designed for the max. operating over pressure considering the acceptance standards of the country of installation.


In most hydro-pneumatic systems, hydro-pneumatic accumulators with separator element are used. The difference between bladder-type, piston and diaphragm-type accumulators lies in the type of separator element.


Hydro-pneumatic accumulators essentially consist of a fluid section and a gas section with a gas-tight separator element. The fluid section has a connection to the hydraulic circuit. During the pressure increase, the gas is compressed and liquid accepted in the hydro-pneumatic accumulator. When the pressure decreases, the compressed gas expands and displaces the accumulated fluid into the circuit.



Bosch Rexroth Diaphragm Type Accumulators (HAD)



Bosch Rexroth HAD accumulator













  • Component series 1X and 2X
  • Nominal capacity 0.075 … 3.5 L
  • Maximum operating pressure 250 bar





Diaphragm type accumulator

Diaphragm-type accumulators consist of a pressure resistant steel vessel (1) which most commonly has a spherical to cylindrical form. Inside the accumulator, there is the separator element, namely a diaphragm (2) made of an elastic, flexible material (elastomer) with the closing button (3) and the plug screw (4). They correspond to Pressure Equipment Directive 2014/6 8/EU.













Bosch Rexroth Bladder Type Accumulators (HAB)


Bosch Rexroth HAB accumulator




  • Component series 6X
  • Nominal capacity 1 … 50 l
  • Maximum operating pressure 350 bar


Bladder-Type Accumulator

Bladder-type accumulators consist of a seamless cylindrical pressure container (1) made of high-strength steel. An elastic bladder (2) mounted inside the container separates the accumulator into a gas side and a fluid side.


Via the gas valve (4), the bladder is filled with nitrogen up to the intended gas filling pressure p0.


The oil valve (3) located inside the oil port of the bladder-type accumulator closes if the pressure on the gas side is higher compared to the fluid side. This prevents the bladder from entering the oil channel and being destroyed.


When the minimum operating pressure is reached, a small fluid volume (approx. 10% of the hydraulic accumulator’s nominal volume) should remain between the bladder and the oil valve in order to prevent the bladder from hitting the valve during each expansion process.


The gas valve (4) consists of sealing cap (4.1), gas valve insert (4.2), gas prefill valve body (4.3), and O-ring (4.4). These parts can be replaced individually.


The type cap (7) includes the technical data and features of the hydraulic accumulator.














We are a Bosch Rexroth Certified Excellence Partner


To enquire or speak to our technical team about all your hydraulic requirements and Bosch Rexroth accumulators, please contact Neilson Hydraulics on 01709 821 002 or E: or visit our website

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Danfoss PVG Combinations

Danfoss PVG Combinations



Danfoss PVG combinations with the modular concept PVG family provide combined valve solutions and give power, performance, and flexibility. The modular concept of the PVG family gives you the advantage of customizing your valve solution to fit your exact application requirements. We offer solutions which makes it possible to combine the Danfoss PVG 100 with the Danfoss PVG 32 and to combine the Danfoss PVG 120 with the Danfoss PVG 32 – ideal for vehicles with diverse requirements.


Flexible system design

The modular design of our PVG range accommodates future control variations and provides an almost infinite number of configurations. As a result, we are able to offer you integrated function solutions that are perfectly customised for your vehicle. As all PVG parts are interchangeable, valve specifications can be easily altered to accommodate new functions and meet rapidly changing market needs.


Machine Benefits include:

  • Customised valve solution to match your exact machine requirements.
  • Load-independent flow control for precise operation and improved productivity.
  • Load-sensing technology for higher efficiency, safety, reduced energy consumption, and longer system lifetime.






To view in full detail the Danfoss PVG family including the PVG 16, PVG 32, PVG 100, PVG 120 and the PVG 128/256 proportional valves, please read the below blog:


Also please see the link below to the official Danfoss PVG information document:


We are an official sales partner of Danfoss.

For more information on any Danfoss products, please call or email our highly technical sales team on T: 01709 821 002 or email

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