what is cc in hydraulic pump brands

Hydraulic pumps are mechanical devices that convert mechanical energy into hydraulic energy. They generate flow with enough power to overcome pressure induced by the load. Hydropack offer group 20 external gear pumps with different specifications.

Hydraulic pumps are mechanical devices that convert mechanical energy into hydraulic energy. They generate flow with enough power to overcome pressure induced by the load. Hydropack offer group 30 external gear pumps with different specifications.

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1.6 CC aluminum mini hydraulic gear pump 3900 PSI max presure. Durable flat tang shaft with counter-clockwise (left) rotation. Through bolt mounting flange and 4000 max RPM. Front outlet and rear inlet ports. 1-year warranty and free same day ground Continental US shipping. Magister mini gear pumps are great for hydraulic power units and power packs. These pumps are designed to be installed inside an oil reservoir.

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To retain our goodwill in clients"" consideration, we manufacture, trade and supply a quality approved Hydraulic Aluminium Gear Pumps. Our offered gear pumps are precisely manufactured using the latest technology and supreme quality components. Used in various industrial applications, these gear pumps are highly acknowledged by the clients. Our valuable clients can avail these gear pumps in different technical specifications and sizes.

With years of experience and knowledge in this domain, we are engaged in offering an excellent range of Hydraulic Gear Pump. The provided pump is manufactured using quality tested components and ultra-modern technology in sync with industry norms. Used in hydraulic fluid power applications, we offer this pump after testing it on different quality measures. Available in varied designs and sizes, this pump is offered at industry leading prices.

We are assisted by our truly skilled and seasoned professionals in manufacturing, trading and supplying a precision-engineered range ofMiddle Pressure Hydraulic Gear Pump. Offered gear pump is manufactured by proficient experts using optimum quality components and progressive technology. Our provided gear pump is designed to use for transporting high pressure and high volume flows. Apart from this, offered gear pump is examined on different parameters by experts.

Owing to our expertise in this domain, we are leading manufacturer of Hydraulic Pumps. The gear pumps offered by us are manufactured using finest material and contemporary technology. In order to conforming to international standards and regulations,

Our top priorities are reliability and easy installation when we design closed circuit pumps and motors for low power applications. U-style and inline options separate variable pumps and fixed motors, giving you great engineering flexibility. Features & benefits

Our Gear Type Flow Dividersdividers are manufactured utilizing optimum quality material and latest technology keeping in mind the set norms of industry. Offered flow dividers are quality checked on several quality parameters to ensure their defect free range. In addition, these flow dividers divides the Flow in equal proposition.

Gear Flow Divderdivides a flow in two usually equal parts. When flow passes through the flow divider in the opposite direction, the two part-flows are combined into one single flow (added).

These gear pumps are specified with helical teeth and a special finishing process that significantly reduce hydraulic pulsation of the oil flow, resulting in lower noise levels and consequently recommending them as the best option for all mobile equipment and industrial applications where superior acoustic comfort is a requirement.

Quiet-running and modular. Aluminium and cast iron components of the silent series are designed applying the same modular logic as adopted for conventional pumps. Accordingly, multiple pumps can be assembled using silent stages together with conventional stages, and silent pumps can also be equipped with all the accessories available for other series. Silent pumps with cast iron body, besides being suitable for heavy duty applications, also offer better performance in terms of mechanical noise reduction.

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Delivery will be Next Working Day wherever possible if the order is made before 4pm or 2pm for any order of oil.  Please allow up to 7 working days for any orders of 205 litre/45 gallons barrels of oil or 1000L IBCs.

You are entitled to cancel your order and return the product to any division of Group HES within 7 working days from delivery date.  After this date, it will be at the discretion of management to decide whether a refund or exchange will be given. A full refund is available if the item is unused, undamaged and in the original packaging. The item must not contain any fluids, including water, oil etc.

An average 20% (percentage may vary), handling charge will be applicable unless the part is faulty or incorrectly described. Any shipping costs will not be refunded.

Please allow up to 30 days for refunds to be applied or alternatives to be resent out. The company reserves the right to assess whether there is any consumer error involved and will take this into account when refunds are granted.

If you need to return an item due to warranty reasons - please refer to our Terms and Conditions and contact admin@grouphes.com or call 01452 730 774.

Gear Pump Manufacturing (GPM) manufactures a complete range of internationally interchangeable commercial components for Bearing gear pumps, Bushing gear pumps, Motors and Flow Dividers.

Parker is a global manufacturer of hydraulic pumps, transmissions, gear pumps and motors, engineering superior products for a wide variety of applications. Delivering unsurpassed quality and performance, Parker’s extensive line of hydraulic pumps and motors helps you select the right product for your hydraulic application. Achieve easier, safer, and more efficient operation. The Pump & Motor Division assures consistent quality, technical innovation, and premier customer service.

Usage/ApplicationHydraulicThe policy made by our firm makes us betrothed in providing well testedStainless Steel Gear Pump. These gear pumps are manufactured with advanced technology & finest quality of material by skilled workforce. Our offered gear pumps are ideal for meshing of gears to pump fluid through displacement. Along with that, we provide these gear pumps at competitive price in a given time frame.

This Gear Pump (Series PNA) is highly appreciated amongst customers for its rigid construction and hassle free performance. Our product range is designed by keeping industrial norms in mind.

Maximum Discharge Flow225 LpmBeing a prominent firm, we are actively committed towards providing our clients with a superior quality range of Hydraulic Gear Pumps. This gear pump is manufactured with advance techniques using high quality material as per the industry norms. The given gear pump is checked on numerous parameters in order to deliver defect free range to customers. Our gear pump is known for their robust construction, less maintenance and excellent performance.

Maximum Pressure250 BarWe have marked a distinct and dynamic position in this industry by manufacturing & supplying qualitativeCast Iron Gear Pump. Offered gear pumps are provided in diverse specifications to choose from. These gear pumps are manufactured with precision utilizing top notch material & latest techniques following the industrial norms. Our offered gear pumps are used to measure tank & pipe fittings for closed loop oil circulation.

In a condition-based maintenance environment, the decision to change out a hydraulic pump or motor is usually based on remaining bearing life or deteriorating efficiency, whichever occurs first.

Despite recent advances in predictive maintenance technologies, the maintenance professional’s ability to determine the remaining bearing life of a pump or motor, with a high degree of accuracy, remains elusive.

Deteriorating efficiency on the other hand is easy to detect, because it typically shows itself through increased cycle times. In other words, the machine slows down. When this occurs, quantification of the efficiency loss isn’t always necessary. If the machine slows to the point where its cycle time is unacceptably slow, the pump or motor is replaced. End of story.

In certain situations, however, it can be helpful, even necessary, to quantify the pump or motor’s actual efficiency and compare it to the component’s native efficiency. For this, an understanding of hydraulic pump and motor efficiency ratings is essential.

There are three categories of efficiency used to describe hydraulic pumps (and motors): volumetric efficiency, mechanical/hydraulic efficiency and overall efficiency.

Volumetric efficiency is determined by dividing the actual flow delivered by a pump at a given pressure by its theoretical flow. Theoreticalflow is calculated by multiplying the pump’s displacement per revolution by its driven speed. So if the pump has a displacement of 100 cc/rev and is being driven at 1000 RPM, its theoretical flow is 100 liters/minute.

Actualflow has to be measured using a flow meter. If when tested, the above pump had an actual flow of 90 liters/minute at 207 bar (3000 PSI), we can say the pump has a volumetric efficiency of 90% at 207 bar (90 / 100 x 100 = 90%).

Its volumetric efficiency used most in the field to determine the condition of a hydraulic pump - based on its increase in internal leakage through wear or damage. But without reference to theoretical flow, the actual flow measured by the flow meter would be meaningless.

A pump’s mechanical/hydraulic efficiency is determined by dividing thetheoretical torque required to drive it by the actual torque required to drive it. A mechanical/hydraulic efficiency of 100 percent would mean if the pump was delivering flow at zero pressure, no force or torque would be required to drive it. Intuitively, we know this is not possible, due to mechanical and fluid friction.

Table 1. The typical overall efficiencies of hydraulic pumps, as shown above, are simply the product of volumetric and mechanical/hydraulic efficiency.Source: Bosch Rexroth

Like theoretical flow, theoretical drive torque can be calculated. For the above pump, in SI units: 100 cc/rev x 207 bar / 20 x p = 329 Newton meters. But like actual flow, actual drive torque must be measured and this requires the use of a dynamometer. Not something we can - or need - to do in the field. For the purposes of this example though, assume the actual drive torque was 360 Nm. Mechanical efficiency would be 91% (329 / 360 x 100 = 91%).

Overall efficiency is simply the product of volumetric and mechanical/hydraulic efficiency. Continuing with the above example, the overall efficiency of the pump is 0.9 x 0.91 x 100 = 82%. Typical overall efficiencies for different types of hydraulic pumps are shown in the Table 1.

System designers use the pump manufacturers’ volumetric efficiency value to calculate the actual flow a pump of a given displacement, operating at a particular pressure, will deliver.

As already mentioned, volumetric efficiency is used in the field to assess the condition of a pump, based on the increase in internal leakage due to wear or damage.

When calculating volumetric efficiency based on actual flow testing, it’s important to be aware that the various leakage paths within the pump are usually constant. This means if pump flow is tested at less than full displacement (or maximum RPM) this will skew the calculated efficiency - unless leakage is treated as a constant and a necessary adjustment made.

For example, consider a variable displacement pump with a maximum flow rate of 100 liters/minute. If it was flow tested at full displacement and the measured flow rate was 90 liters/minute, the calculated volumetric efficiency would be 90 percent (90/100 x 100). But if the same pump was flow tested at the same pressure and oil temperature but at half displacement (50 L/min), the leakage losses would still be 10 liters/minute, and so the calculated volumetric efficiency would be 80 percent (40/50 x 100).

The second calculation is not actually wrong, but it requires qualification: this pump is 80 percent efficient at half displacement. Because the leakage losses of 10 liters/minute are nearly constant, the same pump tested under the same conditions will be 90 percent efficient at 100 percent displacement (100 L/min) - and 0 percent efficient at 10 percent displacement (10 L/min).

To help understand why pump leakage at a given pressure and temperature is virtually constant, think of the various leakage paths as fixed orifices. The rate of flow through an orifice is dependant on the diameter (and shape) of the orifice, the pressure drop across it and fluid viscosity. This means that if these variables remain constant, the rate of internal leakage remains constant, independent of the pump"s displacement or shaft speed.

Overall efficiency is used to calculate the drive power required by a pump at a given flow and pressure. For example, using the overall efficiencies from the table above, let us calculate the required drive power for an external gear pump and a bent axis piston pump at a flow of 90 liters/minute at 207 bar:

As you’d expect, the more efficient pump requires less drive power for the same output flow and pressure. With a little more math, we can quickly calculate the heat load of each pump:

No surprise that a system with gear pumps and motors requires a bigger heat exchanger than an equivalent (all other things equal) system comprising piston pumps and motors.

Brendan Casey has more than 20 years experience in the maintenance, repair and overhaul of mobile and industrial equipment. For more information on reducing the operating cost and increasing the...