May 22
25
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:
(DANFOSS PVG )
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:
https://www.neilson-hydraulics.co.uk/blog/danfoss-pvg-proportional-valves/
Also please see the link below to the official Danfoss PVG information document:
https://assets.danfoss.com/documents/48826/AV152886484752en-000301.pdf
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 sales@neilson-hydraulics.co.uk
How does a Hydraulic Power Unit Work? By utilising fluid to transmit power from one location to another, hydraulic power packs can generate large amounts of power, which in turn can be used to drive hydraulic machinery.
Another way to think of a hydraulic power unit is that it is a portable power delivery system that holds energy for a hydraulic mechanism. A good analogy to think what a hydraulic power pack is, is to consider the role of an electric battery, which stores energy for a circuit to draw on when is required. HPU’s are used in a wide range of industrial applications and machines, especially where there is no direct access to a power source.
A Hydraulic Power Unit in basic terminology, is a self-contained unit that consists primarily of a prime mover (either an engine or electric motor) a hydraulic pump, a valve and a hydraulic tank reservoir.
Hydraulic power is defined as flow multiplied by pressure. The hydraulic power supplied by a pump is: Power = (P x Q) ÷ 600 – where power is in kilowatts [kW], P is the pressure in bars, and Q is the flow in litres per minute. ** based upon 100% efficiency; 90% efficiency would equate to 75 ÷ 0.9 = 83.3kW.
What Are Hydraulic Power Units used for?
At Neilson Hydraulics, we have vast technical experience built over decades of designing and manufacturing bespoke HPU’s from concept to completion, for all sizes and budgets, in order to help the customer with their aim and objective.
At Neilson Hydraulics, we can help you with all your hydraulic requirements and needs. To enquire about our Hydraulic Power Packs, please call 01709 821002, email: sales@neilson-hydraulics.co.uk or visit:https://www.neilson-hydraulics.co.uk/hydraulic-power-packs.html
Top Tips for Hydraulic Power Pack Maintenance. Hydraulic Power Pack maintenance is key to maximising hydraulic system uptime. By implementing a thorough hydraulic maintenance program, application downtime can be kept to a minimum.
The hydraulic power pack is at the heart of hydraulic systems providing pressure and flow to operate hydraulic cylinders (linear motion) and hydraulic motors (rotary motion) which in turn produces power to drove complex heavy machinery.
With all the work they do, proper hydraulic power pack maintenance care is critical. Without it, you risk damaging the components, losing efficiency, and causing safety hazards.
50-70% of all hydraulic system failures can be linked to contamination! Maintaining an appropriate level of oil cleanliness is critical to the success of the hydraulic systems in any heavy equipment operation.
There are three main types of hydraulic maintenance: reactive maintenance (RM), preventive maintenance (PM) and predictive maintenance (PdM).
Reactive maintenance stands for breakdown maintenance and involves the repairs that are done to fix the equipment that is already broken.
Preventive maintenance is regular maintenance that is performed on the equipment to prevent it from breaking down. Preventive Maintenance is implemented through a Preventive Maintenance Program.
Predictive Maintenance or condition-based maintenance uses sensor devices to collect information about the system and components and prompts the personnel to perform maintenance at the exact moment when it’s needed. Due to high costs and technical requirements, it is still new to the market and not used very often.
(Ensure you carry out the appropriate risk assessment before undertaking any HPP maintenance procedures.)
Please also read our blog on: What is a hydraulic power unit?
To help you with your hydraulic power pack maintenance, please contact our experienced technical team at Neilson Hydraulics on 01709 821002/ E: sales@neilson-hydraulics.co.uk or visit our website at:https://www.neilson-hydraulics.co.uk/hydraulic-power-packs.html
What is a Des-Case Desiccant Breather? Des-Case 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.
Des-Case Desiccant Breathers replace the standard dust cap or OEM breather cap on equipment, incorporate a high capture-efficiency filter to help sustain desired cleanliness levels by removing even minute particulate matter. They also create low relative humidity levels in the headspace, making condensation and absorption by the lubricant unlikely. When a system is properly fitted with a breather containing drying and filtration media, the contaminant ingression is greatly reduced.
Every Des-Case Breather has been designed to work in a wide variety of industries and applications, using quality, rugged materials and innovative designs in technology.
(The Des-Case Desiccant Breather family)
Des-Case’s contamination control products are used in a wide range of applications, including gearboxes, hydraulic and lube oil reservoirs and storage/process tanks.
Product Spotlight – Des-Case Standard Series Desiccant Breathers
Discover Des-Case VentGuard Breathers
To enquire about the Des-Case range, please contact Neilson Hydraulics on: 01709 821002 / E: sales@neilson-hydraulics.co.uk or visit our website at: http://www.neilson-hydraulics.co.uk/store/des-case?zenid=64d86839c23ec05eb8fb0096e2cc6d58
We stock and supply a range of DES-CASE Breathers and DES-CASE accessories, including 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 and DES-CASE Breather Adaptor & Accessories.
Apr 22
12
How do hydraulic pumps work? Fundamentally, a hydraulic pump is a mechanical device that converts mechanical power into hydraulic energy. It generates flow with enough power to overcome pressure induced by the load.
When a hydraulic pump operates, it performs two functions. First, its mechanical action creates a vacuum at the pump inlet, which allows atmospheric pressure to force liquid from the reservoir into the inlet line to the pump. Second, its mechanical action delivers this liquid to the pump outlet and forces it into the hydraulic system.
A pump produces liquid movement or flow, it does not generate pressure. It produces the flow necessary for the development of pressure, which is a function of resistance to fluid flow in the system. For example, the pressure of the fluid at the pump outlet is zero for a pump not connected to a system (load). Further, for a pump delivering into a system, the pressure will rise only to the level necessary to overcome the resistance of the load.
In mobile hydraulic applications there are typically three types of hydraulic pumps used. These include gear, piston and vane pumps.
Hydraulic gear pumps convert mechanical power into the hydraulic energy of the fluid. The rotation of the gear causes the suction at the inlet and fluid is transferred by the pump. The fluid flows over the gears. The mechanical energy by the rotation of gears is transferred into the fluid pressure at the discharge.
At Neilson Hydraulics we stock a large quantity of Bosch Rexroth products but also with our sister company VHS Hydraulic Components we have access to stock of numerous brands of gear pumps including Casappa, Dana Brevini and the OT gear pumps.
The piston pump is a hydraulic pump that delivers optimum efficiency and reliability while maintaining a compact size with a high power density. Hydraulic piston pumps can handle large flows at high hydraulic system pressures.
In these pumps, the pistons accurately slide back and forth inside the cylinders that are part of the hydraulic pump. The sealing properties of the pistons are excellent, which makes it possible to operate at high pressures with low fluid leakage. Piston pumps are the hydraulic pumps with the highest-pressure rating and best overall efficiency.
At Neilson Hydraulics we stock and supply the Bosch Rexroth flagship A10VO variable displacement piston pump and also as part of a large group with our sister company Parmafluid the A17FO axial piston fixed displacement pump plus many more Bosch Rexroth products.
Vane pumps are hydraulic pumps that operate at very low noise levels. Vane pumps tend to be a compromise between gear and piston pumps. They are limited by their maximum pressure rating and this is a sign of their relative fragility to gear and piston pumps. Hydraulic vane pumps operate with much lower flow pulsation, i.e. constant flow. As such, vane pumps produce less noise while maintaining a relatively high speed of up to 3,000 rpm.
As a group with our sister companies VHS Hydraulic Components and Parmafluid, we supply the entire range of hydraulic Bosch Rexroth vane pumps including the PV7 Vane pumps for use on a wide range of industrial manufacturing applications.
To enquire or speak to our technical team about all your hydraulic pump or hydraulic problems please contact Neilson Hydraulics on: 01709 821002/ E: sales@neilson hydraulics.co.uk or visit our website at: www.neilson-hydraulics.co.uk.
Bosch Rexroth hydraulic cylinders are built to work in the toughest conditions. Developing solutions in partnership with customers has allowed Rexroth to continually create and expand their portfolio of hydraulic cylinders that meet global safety standards for any environment you work in. Rexroth has rendered hydraulics even more capable, from mill-type to tie-rod hydraulic cylinders that provide safe and reliable lifting. This gives you smarter, reliable cost-optimized solutions with an extended lifecycle and intelligent components.
‘As a newly appointed Bosch Rexroth Certified Excellence sales partner, we are proud to offer the Bosch Rexroth hydraulic cylinders in our product range.’
These robust and reliable mill type hydraulic cylinders are built for heavy-duty use and have been tried, tested and remained stable in even the most extreme conditions. The Rexroth mill type cylinder range comprises both, screwed and welded cylinders.
Mill Type Cylinder Configurator.
The tie rod hydraulic cylinders are primarily used in the machine tool industry and in production of the automobile industry. Due to their smaller installation dimensions, hydraulic tie rod cylinders – similar to welded mill type hydraulic cylinders, can be used in very limited installation spaces.
At Neilson Hydraulics we design, manufacture, and repair all hydraulic cylinder types. We offer quick, efficient turnaround on repairs of general hydraulic cylinders, providing a detailed quotation, test certificate and serial number.
Read our previous blog on Hydraulic Cylinder Types.
To enquire about Bosch Rexroth hydraulic cylinders and our full Rexroth range, please contact Neilson Hydraulics on: 01709 821 002 or E: sales@neilson-hydraulics.co.uk or visit our website www.neilson-hydraulics.co.uk
What are Hydraulic Power Packs used for? Fundamentally, Hydraulic Power Packs are used in place of an integrated power supply for hydraulic machinery and are self-contained units. They are essential in a range of different situations, particularly for industrial work that takes place outdoors and away from any larger scale, integrated hydraulic system.
Advantages of Hydraulic Power Packs
How Do I Choose a Hydraulic Power Pack?
As an overview the performance specifications to consider when selecting hydraulic power units include, operating pressure, flow, total power, reservoir capacity and also what is your budget.
At Neilson Hydraulics, we are highly experienced Hydraulic Power Unit manufactures and have been designing, building, installing, and commissioning hydraulic power units for over 30 years. So, your first port of call should be to speak to our technical team to discuss your hydraulic requirements and how we can help with the solution.
We manufacture custom-made hydraulic power units that can be built strictly in accordance with the client’s specifications. We can provide a complete hydraulic solution from ‘concept to completion’. As a HPP manufacturer, we can provide repeat hydraulic power units, as we well as hydraulic power units for specialist projects. Utilising our technical abilities in 3D modelling, CAD, SolidWorks, system controls and hydraulic circuit design.
We have used our expertise and knowledge for projects spanning numerous sectors, including, recycling, oil, gas, marine, agricultural and construction to name a few.
Other Hydraulic Articles
At Neilson Hydraulic we can help you with all your hydraulic requirements and needs. To enquire about our Hydraulic Power Packs, please call 01709 821002, email: sales@neilson-hydraulics.co.uk or visit: https://www.neilson-hydraulics.co.uk/hydraulic-power-packs.html
Neilson Hydraulics is an official UK sales partner for Danfoss Hydraulics (Danfoss Power Solutions, Bosch Rexroth Hydraulics, Moveco Rotary Actuators, IMO Slew Drives and IMO Slewing Rings. We also supply Des-Case Breathers, Eaton Internormen Filters, SPX Power Team. The company also designs and manufactures a range of Hydraulic Power Packs and Hydraulic Power Units
Mar 22
22
What does PVG stand for? PVG or Proportional Valve Group is a hydraulic load sensing valve designed to provide maximum flexibility. Neilson Hydraulics as an official sales partner of Danfoss hydraulics and with over 30 years technical experience in Danfoss hydraulics products, can help provide you with the solution you require.
Danfoss modular valve solutions take the most complex control challenge and put it to work. The broad valve range is designed for your machines most demanding tasks. The modular electrohydraulic valves provide an almost infinite number of configurations. Varying from simple load-sensing solutions to CAN bus communication – ensuring smooth machine control.
Whether you’re moving the largest of loads or need the precise control that feels like an extension of the operator’s own hand, the family of Danfoss PVG Proportional Valves can address your unique challenges while delivering increased machine productivity and keeping pace with today’s shorter product cycles.
The Danfoss PVG Products Range
PVG 16 Proportional Valves
Optimizes Productivity
Low-flow PVG 16 covers simple to complex needs. Proven technology and components for customized valve stacks. Benefit from load-sensing functionality made for the low-flow segment. PVG 16 optimizes productivity, lowers total system costs and facilitates fulfilment of emissions and safety regulations. Use with the PVE series 6 actuator for seamless integration in advanced electrohydraulic systems.
PVE series 6 actuator
Incorporating a microcontroller for closed loop control, PVE series 6 delivers excellent spool control and built-in fault monitoring to the PVG 16. High tolerance towards temperature variations ensures a robust, reliable valve performance in all conditions.
Key Applications
PVG 16 targets on a broad range of applications in the mobile machinery market. Typical applications are municipal vehicles, agricultural machinery, small cranes, construction machinery and road building applications.
Lower Total System Costs – machine benefits
Product Features
PVG 32 Proportional Valves
Maximum Flexibility
The Danfoss flagship PVG 32 is designed for maximum flexibility. Proven PVG technology that saves you time. No matter which combination of valves is specified, the compact, external dimensions of the valve remain unchanged. Advanced electronic control can be achieved with our PVE electrohydraulic actuators.
Load-Sensing
By using PVG load-sensing technology in combination with a variable displacement pump, it’s possible to achieve a significant reduction in energy loss. PVG valves also reduce heat generation and increase efficiency and power density, which helps OEMs to meet the challenges posed by new diesel engine emissions legislation.
OEM and Machine Benefits
Product Features
PVG 128/256 Proportional Valves
Modularity and Efficiency
For the most demanding applications, only the highest flow and the highest pressure will do. The PVG 128/256 are built to take control with up to 500 l/min per section supplied with up to 1200 l/min (300 US gal/min) pump flow.
Rock-solid control and optimum safety are more critical than ever when it comes to the biggest applications and the heaviest tasks. This new proportional (pre-compensated) load-sensing valve series can easily be built together with PVG 32 and PVG 16 making it easy to build a valve that is adapted to the flow needs of the most demanding application.
Application Opportunities
Go with our PVG 128/256 and optimize work functions on cranes, mining, drill rigs and marine applications like winches and bow thruster.
Machine Benefits
Product Features
The Danfoss PVG portfolio also includes the PVG 100 and the PVG 120.
We are an official Danfoss Sales Partner
Neilson Hydraulics is an official UK Danfoss Sales Partner.
To enquire about Danfoss PVG Proportional Valves, please call 01709 8210002, email: sales@neilson-hydraulics.co.uk or visit: https://www.neilson-hydraulics.co.uk/store/sauer-danfoss
Bosch Rexroth offer the largest range of on/off hydraulic valves than any of its competitors and for all types of applications. From isolator and pressure valves to flow control and directional cartridge valves, as an official Bosch Rexroth distributor and as part of a large hydraulic group with our sister companies VHS Hydraulic Components, Parmafluid, we can find exactly what you need for your optimal hydraulic solution.
The new Bosch Rexroth valve series featuring ISO 7368 standardized cavities carries the principle of modular design over to hydraulics. You can directly mount almost any LFA logic cover in the Rexroth standard program, which in turn allows you to create any hydraulic function imaginable. This increases flexibility for later modifications, as only the logic cover needs to be replaced to adapt the functionality to new requirements.
Bosch Rexroth Isolator Valves block the flow in one direction safely and leakage-free and simultaneously allow for free flow in the opposite direction (Check Valves, Prefill Valves and Shut-off valves).
Bosch Rexroth Directional Valves control the flow direction and thus the direction of movement or rotation of hydraulic actuators (Directional Seat Valves or Spool Valves, Direct Operated or Pilot Operated).
Bosch Rexroth Pressure Valves have a pre-determined effect on the operating pressure in a system or a part of a system (Pressure Relief Valves, Pressure Sequence Valves, Pressure Cut-off Valves and Pressure Reducing Valves).
Bosch Rexroth Flow Control Valves control the flow and thus the speed of hydraulic actuators (Throttle Valves and Flow Control Valves).
Bosch Rexroth 2-way Cartridge Valves are logic elements that have been designed for a compact block design. The power part is installed in a receiving hole of the manifold according to ISO 7368 and closed with a control cover.
To enquire about Bosch Rexroth On/Off Hydraulics Valves, please contact Neilson Hydraulics on: 01709 821 002 or E: sales@neilson-hydraulics.co.uk or visit our website www.neilson-hydraulics.co.uk
You can also view the Bosch Rexroth valve portfolio at: https://www.boschrexroth.com/en/xc/products/product-groups/industrial-hydraulics/topics/onoff-valves/
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.
· 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
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.
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.
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: sales@neilson-hydraulics.co.uk or visit our website at: https://www.neilson-hydraulics.co.uk/imo-slewing-rings.html