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ALP and GHP series multiple external gear pumps

ALP and GHP series multiple external gear pumps
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ALP and GHP series multiple external gear pumps

Product catalog summary
Overview: The document provides comprehensive information on the ALP and GHP series of external gear pumps by jbj Techniques Limited, emphasizing their engineering excellence and compliance with international standards, including ATEX certification.
Specifications: These gear pumps are designed for high-pressure applications, featuring Teflon shaft seals that withstand over 210 bar. They include a radial sealing system to prevent damage from internal over-pressures, beneficial for single-direction hydraulic motors.
Noise Reduction: The pumps reduce noise by an average of 15 dBA due to the helical gear profile, which minimizes pressure oscillations and vibrations.
Design and Construction: The pumps are constructed with gears supported by aluminum bushes, a body, a flange, and a cover. Materials like high-tensile aluminum alloy and globular cast iron ensure minimal deformation under high pressure.
Product Range: The document details five families of modular gear pumps with various options for flanges, shafts, and ports. Special versions are available for high and low-temperature fluids and specific pressure conditions.
Technical Recommendations: Proper installation and use are crucial for optimal performance. The document stresses careful system design, including the layout of suction, delivery, and return lines, and the use of appropriate filtration systems.
Special Versions: Special versions are available for high-temperature fluids, low-temperature fluids, and specific inlet pressure conditions, with detailed specifications for each.
Installation and Use: Recommendations include ensuring the power absorption of the front element is greater than or equal to that of the rear or intermediate elements in multi-stage pumps. The maximum rotation speed is determined by the lowest speed among the pump stages.
Procedures: The document outlines calculations for fluid velocity, delivered flow rate, absorbed torque, and absorbed power, providing formulas that consider factors like flow rate, displacement, rotation speed, and efficiency.
Pressure and Rotation: Product tables indicate three maximum pressure levels (P1, P2, P3) for each pump, explaining the direction of rotation for single rotation pumps and conditions for reaching pressure values.
Drive and Coupling: The pump should be connected to the motor using a flexible coupling to avoid radial and axial forces on the pump shaft. Regular lubrication is recommended to prevent wear.
Recommendations: The document advises selecting the appropriate pump displacement based on system flow rate and motor rotation speed, highlighting the importance of maintaining proper torque and efficiency.
Key Data from Tables: Minimum rotation speeds vary by model, and pressure levels (P1, P2, P3) are defined with specific time and pressure limits. Efficiency values depend on pressure differential, rotation speed, fluid characteristics, and filtration degree.
Conclusion: The document provides guidelines for selecting and operating Marzocchi modular pumps, emphasizing understanding pressure, rotation, and efficiency parameters for optimal performance.
Ordering Information: Instructions on ordering pump elements are provided, with examples illustrating the selection of front, medium, and rear elements based on group, rotation direction, displacement, shaft type, port type, and seals.
Accessories: Standard accessories include a woodruff key, hexagonal nut, and washer. Thread specifications for ports are provided, with M10x1 and G1/4 threads having a depth of 9 mm, and M6 threads having a depth of 13 mm.
Additional Configurations: Different flanges, shafts, and ports are available beyond standard configurations. Consultation with the sales and technical department is advised for more information on part availability and delivery terms.
Technical Specifications: Detailed specifications for various pump models, including ALPP3, GHPA3, GHPI3, GHPP3, and ALPA4 series, are provided, describing parameters such as displacement, flow rate, maximum pressures, maximum speed, and dimensions.
Assembly Guidelines: Modular multiple pumps can be assembled using kits or pre-assembled. Assembly rules state that the preceding stage must be equal to or larger than the following stage in terms of group and displacement, and all stages must have the same rotation direction.
Assembly Kits: Details of assembly kits are provided, including components like coupling, adjustment ring, gasket, screw, and nut. Tightening torques for screws are specified, and part numbers for kits include standard sealing.
Additional Information: Different configurations of flanges, shafts, and ports are available, and consulting the sales and technical department is advised for more information on availability and delivery terms.
Overview of Marzocchi Gear Pumps: Marzocchi gear pumps are known for high-quality manufacturing standards, achieved through research, material selection, and testing. They operate under extreme conditions, offering high hydraulic power, efficiency, low noise levels, and a compact design.
Design and Construction: The basic design includes gears supported by aluminum bushes or bushes with plain bearings, a body, a securing flange, and a cover. Components are made from high-resistant aluminum alloys and special steel, ensuring durability and minimal deformation under high pressure.
Technical Features: Special compensation zones and anti-extrusion seals allow for free axial and radial movement of the bushes, reducing internal leakage and enhancing performance. Proper lubrication of moving parts contributes to a long useful life.
jbj Techniques Limited: jbj Techniques Limited specializes in mechanical power transmission and fluid power products, offering gear pumps, motors, clutches, and couplings. They provide design engineering, product supply, and after-sales service, supported by technical sales engineers across the UK.
Product Range and Services: jbj Techniques offers a wide selection of couplings, gearboxes, hydraulic motors, and fluid power accessories, providing bespoke solutions tailored to customer needs. They are ISO certified and committed to high standards in product quality and service.
Contact Information: jbj Techniques Limited is located at 28 Trowers Way, Holmethorpe Industrial Estate, Redhill, Surrey, RH1 2LW, United Kingdom. For more information, visit their website at www.jbj.co.uk or contact them at 01737 767493.
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Catalog excerpts

ALP and GHP series multiple external gear pumps-1

ALP / GHP series multiple external gear pumps GEAR PUMPS Quality Products for Mechanical & Fluid Power

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an excellence in engineering www.jbj.co.uk/pumpsandmotors.html pumpsandmotors Reduce noise levels by an average of 15 dBA. Gear pump high pressure, teflon shaft seal can Including group 2, 3 and multiple pumps. The bear over-pressures of over 210 bar. A system of helical profile of the gears reduces pressure radial sealing at the shaft that can bear enormous oscillations and vibrations produced by the pump internal over-pressures without resulting in and transmitted to the other components, reducing damage. This radial sealing is particularly useful in the noise of the hydraulic system. Axial forces...

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Techniques Limited; UK distributor for pagina/ pages Informazioni generali 2 General information Progetto di base 2 Basic design Gamma di prodotto 4 Product range Versioni speciali 5 Special versions Informazioni tecniche 6 Technical information Note per l'utilizzo Note per l'installazione Pulizia dell'impianto e filtrazione Fluidi idraulici Pressione in aspirazione Condotti d'aspirazione e mandata Velocita minima di rotazione Definizione delle pressioni Senso di rotazione Traino Formule di uso corrente Elementi modulari monodirezionali 6 Reccomendation for correct use 7 Installation notes 8...

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Techniques Limited; UK distributor for . . . . . . . . . . INFORMAZIONI GENERALI GENERAL INFORMATION PROGETTO DI BASE La pompa ad ingranaggi esterni sia in configurazione singola che multipla (a due o più stadi) è uno dei componenti maggiormente impiegato nei moderni impianti oleodinamici. Essa unisce in sé caratteristiche di versatilità, resistenza, lunga durata. La semplicità nella costruzione permette costi d'acquisto e di manutenzione contenuti. Il consolidamento di questi concetti base, uniti alla continua evoluzione dei prodotti, allo sviluppo della progettazione e della ricerca basate...

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Techniques Limited; UK distributor for . . . . . . . . . .

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Techniques Limited; UK distributor for PRODUCT RANGE GAMMA DI PRODOTTO Le pompe modulari ad ingranaggi Marzocchi sono prodotte in cinque differenti gruppi. All'interno di ognuno, le diverse cilindrate si ottengono variando lo spessore di fascia dentata dell'ingranaggio. La nostra gamma di produzione permette di poter scegliere diverse opzioni di flange, alberi e porte d'aspirazione e mandata. Esse non sono esplicitamente indicate sulla presente non esaustiva pubblicazione pertanto, fare riferimento alle tavole sinottiche presenti sulle pubblicazioni dedicate alle pompe singole della serie ALP...

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Techniques Limited; UK distributor for SPECIAL VERSIONS VERSION! SPECIAL! Limitatamente ad alcuni gruppi e ad alcuni modelli, sono anche disponibili versioni per utilizzi speciali: For some groups and models are available special version for specific uses: "V" Versione per impieghi con fluido ad alte temperature. Campo di utilizzo da -10°C a +120°C. Tra -10°C e +80°C sono permesse P1, P2 e P3 come da tabella prodotto; oltre, non eccedere P1. "VV" Versione per impieghi con fluido ad alte temperature. Campo di utilizzo da -10°C a +150°C con pressione massima 20 bar. "ST" Versione per impieghi...

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Techniques Limited; UK distributor for IFORMAZIONI TECNICHI Per ottenere dalle pompe multiple modulari Marzocchi le migliori condizioni in termini di durata e prestazioni e consigliato seguire le raccomandazioni e i suggerimenti di installazione ed utilizzo indicate nel presente catalogo. Per quanto riguarda il sistema idraulico nel quale andra inserita la pompa, valgono alcune considerazioni generali: prestare molta cura nella progettazione e nella realizzazione dell'intero impianto, in special modo per quanto riguarda i condotti d'aspirazione, di mandata, di ritorno, e la posizione dei componenti...

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Techniques Limited; UK distributor for NOTE PER L'INSTALLAZIONE Prima di avviare I'impianto a regime, consigliamo di osservare alcuni semplici accorgimenti. ■ Verificare, nel caso di pompa monodirezionale, che il senso di rotazione sia coerente con quello dell'albero dal quale deriva il moto. ■ Controllare l'allineamento tra l'albero della pompa e l'albero del motore: e necessario che il collegamento non induca carichi assiali o radiali. ■ Proteggere l'anello di tenuta dell'albero della pompa in caso di verniciatura; verificare la pulizia nella zona di contatto tra anello di tenuta ed albero:...

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Techniques Limited; UK distributor for PULIZIA DELL'IMPIANTO E FILTRAZIONECLEANING AND FILTERING THE SYSTEM E ormai universalmente riconosciuto che la maggior parte dei prematuri cali di prestazioni delle pompe e dovuta ad un loro funzionamento con fluidi contaminati; l'estrema riduzione delle tolleranze che contraddistinguono i componenti delle pompe e il loro conseguente funzionamento con giochi ridotti, possono essere irrimediabilmente compromessi se non si pone estrema cura nel mantenere il fluido pulito. E comunemente accertato che le particelle circolanti continuamente nel fluido agiscono...

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Techniques Limited; UK distributor for FLUID! IDRAULICI HYDRAULIC FLUIDS Si raccomanda i'uso di fluidi specifici per circuiti idraulici a base d'olio minerale, con buone caratteristiche antiusura e antischiuma, con proprieta di rapida disareazione, antiossidanti, anticorrosione, lubrificanti e in grado di soddisfare quanto previsto dalla norma DIN 51525, dalla norma VDMA 24317 e di superare l'11° stadio della prova FZG. Per i modelli standard, la tempertura del fluido durante il funzionamento della pompa deve essere compreso tra -10°C e +80°C. I valori di viscosita cinematica del fluido sono...

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Techniques Limited; UK distributor for VELOCITA MINIMA DI ROTAZIONE Marzocchi pump flexibility is also highlighted by the wide selection of rotation speeds they can work at. Max. values are indicated in product tables and change according to the model, while min. values are as follows: La versatilita delle pompe Marzocchi e evidenziata anche dall'ampia varieta di regimi di rotazione ai quali e possibile sottoporle. I valori massimi sono presenti nelle tabelle di prodotto e variano in funzione del modello, mentre i valori minimi sono indicati nelle seguenti tabelle:

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.