When using a gear pump a pressure relief valve must be fitted to protect the pump if deadheaded against a closed valve or blockage. Our products are acknowledged for their attributes like easy installation, low power consumption, light weight, minimum maintenance, corrosion resistance, perfect finish and durability. Constructed of a highstrength extruded aluminum body with aluminum cover and flange, all pumps are pressurebalanced for exceptional efficiency. They are ideal for transferring high viscosity fluids such as automotive oils, plastics, paint, adhesives, and soaps with a steady and pulseless flow and offer selfpriming capabilities. Dynamatic gear pumps are available in four frame sizes giving displacements from 0. Eaton ternal ear pump d series pcc01 december 14 7 model code double pump the following 29digit coding system has been developed to identify standard configuration options for the external double gear pump. External gear pumps external gear pumps are similar in pumping action to internal gear pumps in that two gears come into and out of mesh to produce flow figure 2.
Internal gear pumps generate flow using a gear with externallycut teeth contained in and meshed with a gear with internallycut teeth. In order for these bearings to work, a minimum speed is required depends upon pressure of the pump. Dowty dynamatics, dowty pumps, hydraulic gear pump, mumbai, india. Our focus on important strategic markets such as trucks, construction equipment and. Gear pump division youngstown, oh 7 remove the drive gear connecting shaft. Base not rigid enough tighten holddown bolts on pump and motor or adjust stilts. Gear pump with magnetic coupling original operating manual vgp h1. The prv can be piped back to the suction side of the pump or into the supply tank. End clearance is the closeness of the rotor gear to the head of the pump. Gear pumps are also widely used in chemical installations to pump fluid with a certain viscosity.
Crs gear pump parts crossover guide rochester, michigan. Dowty gear pumps we are a recognized trader and authorised dealers dowty of a wide range of dowty gear pumps. Group 3 gear pumps technical information bibus hidrotos. Dowty technology gear pumps gear pumps exporter from. Jul 18, 20 external gear pumps work external gear pumps are similar in pumping action to internal gear pumps in that two gears come into and out of mesh to produce flow. Selection of a positive displacement pd rotary pump is not always an easy choice. External gear pumps work external gear pumps are similar in pumping action to internal gear pumps in that two gears come into and out of mesh to produce flow. All are well suited to common hydraulic uses with the piston design best suited for higher pressures. Dowty dynamatics, dowty pumps, hydraulic gear pump, mumbai. In an effort to meet distributor and customer demands for decreased. One gear is driven by the motor and in turn moves the other gear. Gear pumps are the most common type of positive displacement pump. Use this model code to specify a pump with the desired features.
En 624 kb sauerdanfoss group 1 gear pumps catalogue en. This is because the hydraulic gear pump is one of the main components used in manufacturing, con. Gear pumps galtech group 2 start pumps 12 tooth gears and consequent decrease in noise levels. They are one of the most common types of pumps for hydraulic fluid power applications. Many external gear pumps use journal bearings to support the rotating shafts. Concentric is one of the worlds leading manufacturers of hydraulic pumps. Gear pumps are also widely used in chemical installations to pump high viscosity fluids. Dynamatic has a complete range of gear pumps for both mobile and industrial market segments.
One rotor of internally cut gear teeth will mesh with one externally cut gear. A gear pump uses the meshing of gears to pump fluid by displacement. Defects classification pawel pietkiewicz chair of mechanics and machine design university of warmia and mazury in olsztyn k e y w o r d s. The gear pump was invented around 1600 by johannes kepler. Dowty technology gear pumps being the leading names in industry we are involved in supplying and trading a wide range of hydraulic hand pumps. If youre looking for a specific bronze pump and motor combination and dont see it listed, please give us a call so we can get that combination ordered for you. Fluid shall be carried between gear teeth and shall be displaced when. The external gear pump uses two identical gears rotating against each other one gear is. They typically consist of a northern heavy duty gear pump, electric motor, shaft coupling, and coupling guard, mounted on a unit base.
Rotary gear pump selection guide rotary gear pumps are positive displacement pumps that are commonly used for liquid circulation, lubrication, pressure boosting, filtering, medium pressure spraying, sump draining, drum and vat filling, and general fluid transfer applications. Rotary gear pumps finds wide application in power plant, steel mills, refineries, oil storage. In an effort to meet distributor and customer demands for decreased leadtimes, the gear pump division is introducing the vocational. The pump which you purchased is of the external gear type.
Dynamatic developed these pumps in technical collaboration with dowty hydraulic units limited, u. Dowty gear pump catalogue pdf search for happiness. Their main interest is not the pump itself, but smooth, highquality, uninterrupted production at a lower total cost. External gear pumps can come in single or double two sets of gears pump configurations with spur shown, helical, and herringbone gears. Fluid shall be carried between gear teeth and shall be displaced when the gear teeth mesh. Suitable for applications where the pressure is lower than. We do lots of different shafts, flanges and bodies european american some japanese as well as specials for various tractor makes etc. A basic gear pump will have a rotary housing containing two or more gears toothed wheels, helical gears or lobed cams. Gear pumps make good chemical additive dosing pumps provided material compatibility issues are addressed. Typically, gear pumps have efficiencies around 85%. As the gears come out of mesh on the inlet side, liquid is drawn into the pump. The moment you buy a johnson pump brand gear pump from spx process equipment, you will join thousands of industrial customers who rely on our pump technology. Hydraulic gear pumps high precision hydraulic gear pumps are available in flow rating from 0.
The external gear pump uses two identical gears rotating against each other one gear is driven by a motor and it in turn drives the other gear. The pump is so named because it has two gears that are sidebyside or externalto each other. Excessive noise and vibration suction andor discharge piping not anchored or properly supported anchor per hydraulic institute standards. Two identical gears positioned side by side, rotating into one another. This nomenclature differentiates it from an internalgear pump, which has one gear. All 29 digits of the code must be present to release a new product number. The liquid is forced out the discharge port by the meshing of the gears. Displacement d the displacement of a rotary gear pump is the volume displaced during one complete. Gear pump with motor we are an authorized oberdorfer distributor, and have bronze gear pump with motors in stock. Abstract the paper comprises research results of the gear pump typical failures and their connection with. Misalignment longcoupled pump align pump and motor. Gear pumps are roughly classified into external and internal gear types. However, the external gear pump uses two identical gears rotating against each other.
Internal gear pump gear pump 70 50 40 0 10 sound pressure level db a operating overpressure bar 60 80 20 30 40 50 60 70 80 90100 32 supply volume lmin 90 4 45 1 gear pumps gear pumps 2 1,2 0,8 0 3 factor k operating over pressure bar 1,6 2,4 6 9 12 15 18 21 1,8 1 1,4 2,2 2,6 700 cst 380 cst 190 cst 68 cst 38 cst series fl 0,5. Gear pump components pump unit assembly northern pump is a full service gear pump manufacturer. Dowty gear pump catalogue pdf 2pl group 3 dowty ultra pattern gear pumps to download the full catalogue, please click here. Dowty gear pumps gear pumps manufacturer from pune to help keep your systems operating safely and at maximum efficiency, rexroth offers a wide range of pump accessories. Get dowty pumps at best price with product specifications.
External gear pump overview external gear pumps are a popular pumping principle and are often used as lubrication pumps in machine tools, in fluid power transfer units, and as oil pumps in engines. Operates a gear within a gear principle, whereby one gear the idler is positioned inside another gear the rotor. Gear pump division kings mountain, north carolina usa 5 box 6 gear housing 030 series 031 series housing code. Most pd pumps can be adapted to handle a wide range of applications, but some types are better suited than.
High precision hydraulic gear pumps are available in flow rating from 0. If the thrust plate remains in the gear housing, remove as described in step 3. To return to this page, please click on the red text in the top corner of each page. D dowty 4 bolt y y y y s sae a 2 bolt std profile y y y y a sae aa 2 bolt y k deutz mounting y x sae 2 bolt quill k2 2p y h sae 6 bolt quill k2 2p y b sae b 4 bolt 3p y c sae c 4 bolt 3p y 2 sae b 4 bolt bearing support y 3 sae c 4 bolt bearing support y. The pressure balanced design of the pumps provides high efficiency for the entire series. The sep3nn gear pump is available in a limited displacement range from 22. It may be calculated from the physical dimensions of the gears, or it. The gear pump, on the other hand, is a constant output type extrusion pump, that outputs the rubber compound filling the space between the pumps revolving gear teeth by means of engaging the gear teeth, with which output remains constant even when extrusion pressure fluctuates see fig. Internal gear pump eips2 type eips2 with constant displacement volume technical data.
Outline of the gear pump a gear pump is a kind of rotary pump and is defined as a positive displacement pump. This pump type cannot run dry or handle abrasiveladen fluids, and places high shear on the. E n g i n e e r i n g gear pump basics the external gear pump is a positive displacement pd type of pump generally used for the transfer and metering of liquids. To view a gear pump, please click on the name below or use the bookmarks in your pdf software. Flange and cover in aluminium or on request, cast iron. External gear pump overview michael smith engineers. This page will introduce you to gear pumps, applications that use gear pumps, and the use of powder metal for producing pump gears. Each individual pump is preset for rear connection to one or more pumps by interposition of the appropriate coupling flange. The snp2nn pump accommodates sae 9tooth and the skp2nn is a. Fristam fl 3 series sanitary helical rotary lobe pumps gentle handling transfer and cip in one pd pump the fl 3s unique threewing helical rotor design expands the application range of the fl positive displacement sanitary rotary lobe pumps. Double pump in et out woodruff 1500 2000 400 174 pump displacement.
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