Gear pumps have close tolerances and shaft support on both sides of the gears which allow them to run to pressures beyond 3,000. When atex pumppump unit is supplied, the separate atex manual must be considered always wear suitable safety clothing when handling the pump. Factory set gear pumpheads overview of gear pumps flow rates and models flow rates mlmin bar model page min. The fine gearing with a high number of teeth guarantees a lowpulsation volume flow. But, the recommended mounting position is with the drive shaft on a horizontal plane and the case drain port 1 on the top side. The kf 0 is an external gear pump with flow rates of 0. Series d hydraulic gear opencircuitgear pumps technical. Base not rigid enough tighten holddown bolts on pump and motor or adjust stilts. This nomenclature differentiates it from an internalgear pump, which has one gear. The grading of the total of 8 nominal sizes makes it easier to set the desired dosing ratios. The ph series is an all cast iron gear pump designed for low to medium flow systems.
The rotary gear pump is an alternative that should not be o verlooked for low to moderatepressure 100 psig or less applications. Troubleshooting guide troubleshooting guide part 1 problem possible cause corrective action no discharge pump not primed verify suction pipe is submerged. Demonstrative drawing of the pz2 type gear pump structure. A motordriven gear pump discharges oil at low operating pressures. If tightening is no longer possible, the gear pump must be replaced. Our external gear pumps can be used in many various applications and industries. Its small package size makes it ideal for direct mounting to ptos. Since the pressure is equal on both sides of the spool, the differential spring keeps the spool to the left. An investigation of external gear pump efficiency and stribeck values article pdf available in sae technical papers 8 september 2012 with 2,511 reads how we measure reads. Attempting to replace the pump shaft packing can cause serious problems.
Pump body waterborne hardened steel 6crnimoti17 22k cleaning adapter plastic. Series d hydraulic gear pumps technical manual general information the d series pumps have an excellent reputation for rugged, dependable performance at continuous pressures to 276 bar 4000 psi and speeds to 3400 min1 rpm. Sauer danfoss tandem gear pumps and motors at hydrokit, you will find a wide range of hydraulic tandem gear pumps and motors made by sauer danfoss. Internal gear pump eips2 type eips2 with constant displacement volume technical data. The kracht gear pump size kf 0 is especially suitable for these applications. Install shutoff valves on both sides of the pump to be able to shut off the inlet and outlet. The johnson pump brand represents more than 50 years of experience in developing and manufacturing gear pumps and is one of the leading suppliers in the market. Tandem gear pumps doppelzahnradpumpen naaiaiua ianinu. Oil outputs normally flow back to a machinery sump area where pump is located to recirculate the. Magnetically coupled gear pump series 2030 5030 3 20. Excessive noise and vibration suction andor discharge piping not anchored or properly supported anchor per hydraulic institute standards. Rated size ng 005 006 008 011 0 016 019 022 025 spec. Hydraulic gear pump and motor failure analysis and repair guide page 2 of 32 alamo industrial 1502 e walnut st, seguin, tx 78155. Uhe do not accept any liability for misapplication of this information.
Rotary gear pump type rdbxrdnx bitumen pump,glycerine pump. Pdf an investigation of external gear pump efficiency. High efficiency pressure balanced bearing blocks assure maximum efficiency under all operating conditions. Anchor the pump properly before startup to avoid personal injury andor damage to the pump unit. Typical noise level is less than 75 dba under normal operating conditions. Hydac external gear pumps are also available as multiple pump combinations pge104. For any pump the npsh required for a design performance is a function of the type of pump, the liquid characteristics, the system pressuretemperature conditions, the capacity and the operating speed. Model 1,2 ccmrev 3,0 ccmrev 6,0 ccmrev length 189 200 200 118. The gear pumps used are equipped with a turcon roto variseal shaft seal, referred to as variseal.
Analyzed pump is a device which works under high working pressure and with high rotational speed. Pumps of this type are called double volute pumps they may also be referred to a split volute pumps. At irregular intervals, hot melt material can leak out of the packing. Gear pumps deliver smooth, pulseless, accurate, and repeatable flow. It may be calculated from the physical dimensions of the gears, or it. We offer a range of gear pumps to give you the benefits you desire including easier set. Products settima products settima designs and manufactures hydraulic screw pumps and helical rotors pumps. Displacement d the displacement of a rotary gear pump is the volume displaced during one complete. Group 2 gear pumps technical information group 2 gear pumps technical information p101 000 high quality case hardened steel gears with superior surface finishing pressure compensated bearings made of antifriction alloy ptfe bronze based bushings for long life and high performance various shaft options including. Settima screw pumps and helical rotor pumps are positive displacement rotary pumps. Centrifugal pumps can also be constructed in a manner that results in two distinct volutes, each receiving the liquid that is discharged from a 180. The wide hydrocar range of gear pumps have been designed to satisfy many different vehicles. 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 gears are optimized to reduce noise and pulsation during operation. Gear pump components pump unit assembly northern pump is a full service gear pump manufacturer. The npsh required is thus the head of the liquid required at the pump suction nozzle above the vapour pressure of the liquid at that point. Qx double pumps consits of two single pumps mounted on a common drive shaft. Hydraulically, the two pumps operate independently of one another but they share a common suction port in the pump. Positive displacement pumps allow liquid to flow into an open cavity trap the liquid in the pump transport liquid from the suction to discharge port mechanically force liquid out of the pump. By switching to a larger pump running at 350 rpm to generate the same 100 gpm, the npsh r drops to 3. Abstract the paper comprises research results of the gear pump typical failures and their connection with symptoms observed.
For example, a gear pump generating 100 gpm at 780 rpm has an npsh r of 9. Hydraulic gear pump and motor failure analysis and repair guide. Typically, the pump is mounted in machine oil sump see page 2. Hydraulic gear pump and motor failure analysis and repair. The sheer versatility of these pumps permits the assembly of a multiple pump, using only a single pump. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. In such cases there are provided some gear pump for charging of raw material viscosity varies from 100 cp to cp and also with season viscosity vary of similar raw materials. Each design of galtech multiple hydraulic gear pump that we offer is available in a range of specifications and in both standard and t. Prevent hot melt material from flowing out of the bores of the tank when the pump is removed.
Turolla high performance gear pumps are fixed displacement pumps which consist of the pump housing, drive gear, driven gear, du bushings, rear cover and front flange, shaft seal and innerouter seals, as shown in the image below. C 032005 group 3 gear pumps technical information pump design f005 073 snp3 co01 cut away sep3 the sep3 gear pump is available in a limited displacement range from 22. Pump without reservoir the pump can be mounted in any position. Available in four different sizes, with very narrowstage specific displacement flow and a large range of flange and shaft designs. Veljan gear pumps 30 veljan hydrair limited gear pumps division balanagar, hyderabad single pump unit dimensions data of vgp d. 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. Gather gear pump magnetic drive 4 gear pumps effortless pump head replacement 5 drip industrial dosing pump 6 pumping characteristics 7 drives and speed control 8 special designs 9 dosing technology 10 pagepage page gear pump and wankel pump gather magnetic drive gear pumps are designed for dosing as well as process pump operations. The johnson pump brand represents more than 50 years of experience in developing and manufacturing gear pumps and. The pump is so named because it has two gears that are sidebyside or externalto each other. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. We do lots of different shafts, flanges and bodies european american some japanese as well as specials for various tractor makes etc. Prediction of potential failures in hydraulic gear pumps. Gear pump in autocad files 3d cad model library grabcad. Misalignment longcoupled pump align pump and motor.
We frequently build and assemble pump unit assemblies, or skids as they are sometimes called. Tandem gear pumps doppelzahnradpumpen naaiaiua ianinu group gruppe q cm3 p max bar oiia 3. There is no control pressure in the servo piston, so the pump will stay at full stroke. The larger pump of the combination is situated at the shaft end the drive side. Group 3 gear pumps technical information pump design f005 073 snp3 co01 cut away sep3 the sep3 gear pump is available in a limited displacement range from 22. Settima focused the production on no noise pumps settima pumps can be used in every hydraulic applications and in systems of many types. The sep3nn gear pump is available in a limited displacement range from 22. Centrifugal pumps develop pressure by increasing the velocity of the liquid liquid is literally flung out of the cutwater. A gear pump can be run for long periods between maintenance making it suitable for continuous duty applications. Assembly is furnished with two discharge outlets and is normally used to deliver oil to individual areas on machine. The rotary gear pump merits consideration because it overcomes many of the problems encountered with reciprocating metering pumps and is generally much less expensive.
The muncie ph series gear pump is warranted against any defect in material and workmanship which existed at the time of sale by muncie, according to the following provisions, subject to the. Refer to the referenced oilgear piping information bulletin 90011. Dennis gear pump project table of contents table of. The fluidotech ig series positive displacement gear pump has been designed to handle viscous fluids with impurities in suspension and temperatures up to 200 c 392 f whilst delivering a smooth flow. Suitable for applications where the pressure is lower than 210 bar 3045 psi, the sep3 range is released into sae and european. The shafts with fixed gears are assembled in the cover and housing, supported by sleeve type bearings. Ig series gear pumps gear pump, vane pump, peristaltic pump. Small gear pumps usually operate at 1750 or 3450 rpm and larger models operate at speeds up to 640 rpm. Hi, in plant some of the raw materials we have to charge through barrels and pump into reactorvessel. They typically consist of a northern heavy duty gear pump, electric motor, shaft coupling, and coupling guard, mounted on a unit base. Their main interest is not the pump itself, but smooth, highquality, uninterrupted production at a lower total cost. In this view the variable orifice is restricting pump flow. Pdf an investigation of external gear pump efficiency and.
Application flexibility valve capabilities and common inlet multiple pump. These are made as 3 or 4 unidin flange versions and sae models are made also to fit any style of pto. A simple solution for metering applications liquiflo has been manufacturing highquality gear pumps for over 40 years variable speed motor motor controller supply tank process tank ph sensor gear pump 420 ma signal flow figure 5 shows a schematic hookup of a metering application precisely controlling the flow rate of a liquid into a process. These components are known for their reliability and robustness, which meet the requirements for equipment in agriculture, public works, marine, truck, transport and industry. Suitable for applications where the pressure is lower than. Precise by design, they deliver accurate and repeatable performance, a smooth flow and a pressure up to 18 bar 260 psi.
1086 342 156 1246 1524 1553 681 1459 1392 1550 344 1411 420 898 552 378 470 647 568 1124 781 335 1222 353 1395 835 196 273 1228 1334 1001 63 547 879 778 593 301 1152 308 1487