Doublefeed gerotor provides excellent suction ability and dual shaft bearings ensure a long service life. Gerotor elements use a drive shaft with an inner and outer rotor. They are primarily suitable for clean, low pressure applications such as lubrication. I figured a 2 shaft is identified as a gear pump, while a single shaft is typically a motor. Nichols portland appoints thomas k houck as new president and ceo. The axis of the inner rotor is offset from the axis of the outer rotor and both rotors rotate on their respective axes. Hill who spent many years developing the geometric theory in the early 1900s. Gerotor pump overview gerotor pumps are internal gear pumps without the crescent. Gerotors are positive displacement pumps that are used in a variety of applications. Efficiencydriven design methodology of gerotor hydraulic. These pumps work similar to the spur type gear pump but without the crescent between the rotor the internal drive gear and the idler the external driven gear. Find software for gerotor design related suppliers, manufacturers, products and specifications on globalspec a trusted source of software for gerotor design information. Nichols portland nichols portland is recognized as the world leader in designing and manufacturing precision gerotor elements. The close tolerance between the gears acts as a seal between the suction and discharge ports.
If a gerotor isnt exactly what your application needs, well recommend something else that is right. Design and create your gear set and porting directly in gerotor design studio and get a quick estimate of pump performance. Design and cfd analysis of gerotor with multiple profiles ellipseinvoluteellipse type and 3ellipses type using rotation and translation algorithm jun ho bae1, hyo seo kwak3, sereisith san3 and chul kim2 abstract gerotor is a key component used in internal gear pumps of vehicles, and as the technology of sintering process is highly. Analitycal and numerical analysis of load gerotor pumps. An automatic program was developed to calculate hertzian contact stress of the gerotor using the matlab and the effect of the design parameter on the maximum contact stress was analyzed. Nichols portland llc, headquartered in portland, maine, usa, has announced thomas k houck as its new president and ceo. Nichols portland, llc gerotor and gerotor pump manufacturer. The name gerotor is derived from the words generated motor, and refers to an internalexternal gear pump, where an external gear fits inside a rotor that consists of an internal. Headquartered in portland, maine, usa, nichols portland designs and manufactures billet and powdered metal components for use in fluid transfer devices and other automotive and industrial applications. This certificate is for the exclusive use of interteks client and is provided pursuant to the agreement between intertek and its client. Pronunciation of gerotor with 1 audio pronunciation, 2 translations and more for gerotor. Portland, a division of parker hannifin corporation. Cfd analysis and disscusion the generated coordinates of the inner and outer rotors are utilized to construct the flow field model of.
Gerotor volume, rpm and displacement calculations msakaria mechanical. Whatever the application, we have available or can develop gerotors that provide your equipment with builtin cost and performance advantages along with increased design flexibility. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Computational fluid dynamics integrated development of gerotor. Gerotor and geroler motors deliver from 10 to 50,000 in.
Whatever the application, we have available or can develop gerotors that provide your equipment with builtin cost and performance advantages along with. The rotor is the internal drive gear shown below in gray, and the idler is the external driven gear, shown below in orange. I looked over the document and i am not sure how this can help. They are pumps with a ring gear and an internal gear that revolves around inside this ring gear.
The rotors of starrotor gas compressors have relatively low surface speeds, making them much less susceptible to droplet erosion. Cascon meets your requirements over the entire lifecycle of your oem product. Lear romec provides positive displacement pumps utilizing gerotor technology. Used in many applications across the world, offering significant benefits over traditional spur gear pumps. Gerotor pumps are offered in single and multiple element arrangements and are used mostly in oil applications. Well, i have some odds and ends on the bench, and i know one is a twin shaft gear, so im going to assume its a pump, the other 5 i have are single shaft, im assuming. Drawing supplied by nichols portland issue 2 is to update pren 4635. In this study, in order to address the problems of existing oil pumps, design of a new lobe shape with 2ellipses was developed in order to decrease a sharp change of curvature.
Jun 12, 2018 nichols portland llc, headquartered in portland, maine, usa, has announced thomas k houck as its new president and ceo. Profile design and volumetric efficieny analysis of gerotor pumps for awd vehicles proceedings of research world international conference, bali, indonesia, th14th february, 2017, isbn. Gerotor selection and pump design will guide you through the initial stages of your pump design. Whether your application is one listed here, or one thats still on the drawing board, a nichols portland gerotor can improve your products performance. We can tailor our existing designs to suit your specifications, delivering all the benefits of cascon engineering without timeintensive development. The annu lartoothed feeding element, also referred to as the gerotor, is equipped with a. Droplets damage valves in reciprocating machines, and destroy the fastmoving vanes of dynamic machines. Nichols portland engineering services are as important as. A gerotor unit consists of an inner and outer rotor. This is for nichols portland gerotors and i have a custom. We contacted nichols portland and were directed to marc goulet, design specialist for automotive oiling systems.
In this design selection manual, better understanding. Gerotor machines are internal gear hydraulic devices that present numerous performance benefits with respect to other topologies. Gerotor selection pump design free download as pdf file. Hello all, i am working with a gerotor that i have no information about. Pump will undoubtedly have nichols portland gerotor set. Pump will undoubtedly have nichols portland gerotor set np are part of the parker hannifin group. Furthermore the solid shape of the pump is high resistant for hydraulic and mechanic impact loads. This is for nichols portland gerotors and i have a custom gerotor. For this reason, they find their application in highefficiency. The asa gerotor pump unit fulfills the requirements of a modern hydraulic system. While gerotor design and gerotor production remained in portland, maine, manufacture of the motor products was absorbed into other parker operations and the plant in gray was closed. Gerotor pump performance correlation study gerotor design studio. The design of the pressure chambers offers low pressure pulsations and the qpm3 design and material selection make the pump light and compact.
In 2016 the portland plant was sold to altus capital and today the devices are sold into the automotive and industrial markets under the nichols portland brand. In order to get started, we contacted several professionals in industry to aid in the development of the custom pump. As the worlds first manufacturer of gerotors and gerotor pumps, nichols portland has more than 85 years of continuous experience in the manufacturing, design, application, testing and validation of these products. The name is derived from the words ge nerated rotor, coined by the father of the gerotor design, myron f. Nichols portland llc focuses on the design and manufacture of fluid transfer devices pumps, powdered metal components, and other technologies gerotor. This program is just a guide line for the size of the gerotor. For the calculation depends on various factors tpv can not take over any responsibility for the function of the calculated gerotor. The name gerotor is derived from the words generated motor, and refers to an internalexternal gear pump, where an external gear fits inside a rotor that consists of an internal gear, and the pair are in constant sliding contact.
Gerotor pumps, positive displacement crane aerospace. 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. Nichols portland focuses on the design and manufacture of fluid transfer devices pumps, as well as producing a wide range of products for the automotive, onoff highway and other industrial markets. Influence of gerotor performance in varied geometrical design. The compactness of the gerotor pump design saves weight and space. Gerotor design studio gds is a unique, fully featured cad cam solution to the difficult task of designing, analysing and manufacturing gerotor pumping elements. The annu lartoothed feeding element, also referred to as the gerotor, is equipped with a cycloid contour, which creates a large tooth meshing length. Cascon designs and manufactures a range of mobilemarket products from simple lube pumps to multicircuit, multifunction pumps to suit a range of unique applications. Although nichols portland is known globally for its fluid transfer technology. Influence of gerotor performance in varied geometrical. Gerotor design studio limited overview free company. Nichols portland a division of parker hannifin corp. Gerotor selection andpump design will guideyou through the initialstages of your pumpdesign. Because of their simple design and compact size, they can be used in both mobile and industrial applications.
Evolving performance requirements and design variations mean that the breadth of applications continues to grow. Gerotor design studio limited free company information from companies house including registered office address, filing history, accounts, annual return, officers, charges, business activity. This advantage is also particularly important for expanders. Performance parameters of an improved gerotor 2ellipses were calculated and compared with those of the existing gerotor circle and 3ellipses.
And if we cant solve your application challenge, well gladly refer you to someone who can help you. Using computer modeling and years of testing experience, nichols portland engineering teams can determine design and performance parameters not only for the gerotor, but for the system surrounding it. Nichols portland llc focuses on the design and manufacture of fluid transfer devices pumps, powdered metal components, and other technologies. Nichols portland appoints thomas k houck as new president. Nichols portland llc pump school gerotor pump description and animation step by. Nov 20, 2012 how to design a generated rotor contour step by step wie man eine generated rotor verzahnung erstellt schritt fur schritt ohne entsprechende spezialsoftware category. They are primarily suitable for clean, low pressure applications such as lubrication systems or hot oil filtration systems, but can.
I have no way of knowing what the displacement for my gerotor is. Dec 15, 2016 this paper reports the optimal design of a gerotor with a 2ellipses combined lobe shape that reduces the maximum contact stress. Analitycal and numerical analysis of load gerotor pumps lozica ivanovic1 mirko blagojevic1 goran devedzic1 yasmina assoul 2 this paper deals with forces and moments that influence the gearing pair of the rotary trochoidal pump. Request pdf influence of gerotor performance in varied geometrical design parameters gerotor performance is influenced by sealing properties, area efficiency, contact stress, and outlet pressure. Gerotor experience dating back more than fifty years, cascon engineers know the.
Cascon is your solution for the design, development, and production of pumps for specialty applications. It will help youdetermine yourapplicationrequirements, anddecide whether astandard or customgerotor best meets yourneeds. Nichols portland customers demand gerotors that deliver flawless. Etc analitycal and numerical analysis of load gerotor pumps in the pump can be expressed in a vector form such as. Hydraulic internal gear gerotor pump manufacturing supplier. Gerotor pumps are internal gear pumps without the crescent. Nichols portland has more than 85 years of continuous experience in the manufacturing, design. Internal gear pumps are not gear pumps that go inside machinery. Liquid travels through the pump between the teeth of the gearwithinagear principle. Design analysis of lubricating pump rotor shaft for fatigue.
Following is the list of design parameters of a gerotor gear set. Gr20 gerotor l series c series each of the series, the l series and the c series is a positive displacement type utilising internal. The inner rotor is located offcenter and both rotors rotate. Realworld applications the nichols portland engineering teams experience in automotive, industrial and mobile applications is reflected in the comprehensive testing capabilities we bring to each project. We would advice that you sent us the parameters in order to verify the functionality of the oil pump. Liquid enters the suction port between the rotor gray gear and idler orange gear teeth. It seems like this document would help if i had the displacement of the gerotor which is exactly what i am trying to determine. Despite the simplicity of relations between these parameters, this quick reference might be useful for the casual gerotor designer since the parameters and their names provided are rather site specific and.
Pdf optimized design and characterization of motorpump unit for. Pump will undoubtedly have nichols portland gerotor set np are part of the parker hannifin group examination of np standard gerotor sets shows 2 likely candidates for gerotor forms. Nichols portland and were directed to marc goulet, design specialist for automotive. The special design of the pressure relief groove ensures low flow pulsations and low noise levels. Mechanical engineering 450 winter 2008 custom dry sump. It will help you determine your application requirements, and decide whether a standard or custom gerotor best meets your needs. Gerotor pumps, product series 143 fundamentals design figure 1 skf gerotor pump units of product series 143 have a constant displacement volume and one delivery circuit. This paper reports the optimal design of a gerotor with a 2ellipses combined lobe shape that reduces the maximum contact stress. F zf kf 3 fn3 outlet 4 p s 4 p3out p b 3 2 iin inlet yt ya p 1 y f t pi.