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jbj Techniques Limited
GHP series external gear pumps Groups 1, 2 and 3

GHP series external gear pumps Groups 1, 2 and 3

Product catalog summary

General Information: The GHP series external gear pumps are designed for hydraulic systems, offering versatility, strength, and durability. They are compact, cost-effective, and reliable, suitable for industrial and mobile applications. Constructed from high-resistance aluminum alloy and spheroidal cast iron, they withstand high pressures.

Basic Design: The pumps feature a pair of gears supported by aluminum bushes, a body, a securing flange, and a cover. The gears are made of special steel, ensuring low pulsation and noise levels. A twin-lip seal ring and an anti-extrusion ring enhance sealing and durability.

Product Range: The GHP series includes three groups (GHP1, GHP2, GHP3) with displacements from 1.4 to 87 cm³/rev. Various flanges, shafts, and ports are available, including reversible pumps and those with independent driving systems.

Special Versions: Special versions are available for high-temperature fluids, low-temperature fluids, and high inlet pressures, identified by specific codes to meet unique application requirements.

Technical Information: Optimal performance and longevity require following installation and usage recommendations. Proper system design, component positioning, and adequate filtration are essential to prevent contamination and ensure efficient operation.

Installation Notes: Ensure the pump's rotation direction matches the drive shaft before starting the system. Proper alignment and secure installation are critical for effective operation.

Installation and Startup Procedures: Ensure proper alignment between pump and motor shafts to avoid axial or radial loads. Protect the pump's shaft seal during painting and ensure cleanliness to prevent wear and leakage. Remove debris from connection flanges and ensure intake and return pipes are submerged and distant from each other. Install the pump below the fluid level if possible, fill it with fluid, and manually rotate it. During initial startup, disconnect the pump drain to bleed air and set pressure limiting valves to the minimum. Avoid starting under load at low temperatures or after long inactivity. Gradually increase pressure while monitoring fluid and part temperatures and rotation speed.

Cleaning and Filtering: Contaminated fluids are a major cause of pump failure. Ensure system cleanliness during assembly and maintain it throughout operation. Use preventive measures like cleaning, deburring, and pre-filtering fluids. The initial contamination level should not exceed ISO 4406 class 18/15. Use filters with low absolute filtering power and high β filtering ratio to ensure effective filtration. The filtering system should maintain contamination levels within specified limits, especially for systems with sophisticated valves.

Hydraulic Fluids: Use mineral oil-based hydraulic fluids with anti-wear, anti-foaming, antioxidant, anti-corrosion, and lubricating properties, complying with DIN 51525 and VDMA 24317 standards. The fluid temperature should be between -10°C and +80°C. If using other fluids, specify the type and conditions for compatibility assessment.

Pressure and Speed Specifications: Inlet pressure should range between 0.7 and 3 bars absolute. The pumps support a wide range of rotation speeds, with minimum values specified for different models. Product tables indicate maximum pressure levels (P1, P2, P3) and corresponding rotation speeds. Ensure pipes have no sudden changes in direction or cross-section and are proportionate in length.

Direction of Rotation: Marzocchi GHP series pumps are available in single and bi-rotational configurations. For single rotation pumps, the direction is defined by the observer's position relative to the pump's driving shaft.

Specifications: The document outlines the specifications for a series of pumps, including the standard mounting flange and port specifications. The pumps are equipped with a key (code 522070) and mounting flange 50-2 (A-A) compliant with SAE J744c. The standard ports are machined according to SAE J1926/1 (ISO 11926-1) for threaded ports with O-ring seals.

Technical Data: The document provides detailed technical data for various pump models (GHP1A-D, GHP1AQ-D, GHP1A2-D, GHP2-D, GHP2A-D, GHP2A3-D), including displacement, flow rate at 1500 rpm, maximum pressures, maximum speed, and dimensions. Each model has specific parameters for displacement (cm3/rev), flow (litres/min), pressure (bar), speed (rpm), and dimensions (mm).

Accessories: Each pump model comes with specific accessories such as keys and mounting flanges. For example, the GHP1A-D series includes a key (code 522223) and the GHP2 series includes a woodruff key (code 522057), M12x1.5 hexagonal nut, and washer.

Torque Specifications: The document specifies the tightening torques for various fittings, such as G1/2, G3/8, Rc1/2, 9/16-18 UNF, 3/4-16 UNF, and 7/8-14 UNF, with maximum torques ranging from 30 Nm to 70 Nm. It advises confirming these values with the fittings suppliers.

Performance Curves: Performance curves are provided for different pump models, obtained at 50°C using oil with a viscosity of 30 cSt. The curves indicate performance at various pressures, ranging from 25-300 bar to 25-150 bar, depending on the model.

Ordering Information: The document includes examples of how to order pumps, specifying rotation, displacement, flange type, shaft type, port type, and seal options. It also notes that reversible rotation is available for most models, except for specific exceptions.

Additional Information: The document mentions that the product data sheets represent standard model types and that synoptic tables for flanges, shafts, and ports show all possible configurations. For further details on availability and supply conditions, it recommends contacting the sales and technical department.

Overview: The document provides technical specifications and details for various models of hydraulic pumps, specifically the GHP2 and GHP3 series. It includes information on displacement, flow rates, maximum pressures, speeds, dimensions, and accessories.

Specifications:

Displacement and Flow: The pumps have varying displacements ranging from 4.5 cm³/rev to 50.2 cm³/rev, with corresponding flow rates at 1500 rpm.
Pressure Ratings: Maximum pressure ratings are specified for each model, with values typically ranging from 160 to 310 bar.
Speed and Dimensions: Maximum operational speeds are provided, generally up to 4000 rpm, along with detailed dimensions for each pump model.

Accessories and Mounting:

Standard accessories include a woodruff key, M12x1.5 hexagonal nut, and a washer.
Standard ports are M6 threads with a depth of 13 mm.
Mounting instructions specify the use of M10 screws with a torque setting of 46 ± 4 Nm.

Performance Curves: Performance curves are provided for different models, indicating absorbed power, absorbed torque, and drive speed at various pressures and temperatures.

Ordering Information:

Details on how to order specific pump configurations, including options for rotation, flange types, shaft types, and seal options.
Reversible rotation is available for all listed displacements.

Additional Notes:

Tightening torques for various fittings are specified, with recommendations to confirm with suppliers.
Drain ports are machined according to SAE J1926/1 (ISO 11926-1) standards.

Specifications: The document provides detailed specifications for various models of pumps, including GHP3, GHP3A, GHP3A2, GHP3BK1, and GHP35. Each model is described with parameters such as displacement (cm3/rev), flow rate at 1500 rpm (litres/min), maximum pressures (bar), maximum speed (rpm), and dimensions (mm).

Procedures: Instructions for mounting and accessories are provided. For example, the GHP3A model includes a key (code 522068) and a mounting flange compliant with SAE J744c. Standard ports and thread depths are specified for each model.

Standards and Norms: The document references compliance with standards such as SAE J744c for mounting flanges. Thread specifications are given in both metric and UNC standards.

Recommendations: Recommendations include ensuring that external draining is always connected to the tank to prevent pressure build-up beyond 6 bar. It is advised to consult the Sales and Technical Department for applications with conditions differing from standard product tables.

Performance Data: Performance curves are provided for different models, indicating absorbed power, absorbed torque, and drive speed. These curves are based on tests conducted at 50°C with oil viscosity of 30 cSt.

Accessories: Accessories such as fittings and gasket kits are available, with specifications for materials (cast iron or steel) and temperature ranges (-30°C to +100°C). Tightening torques for screws are specified.

Key Data from Tables: The tables provide detailed technical data for each pump model, including flow rates, pressures, and dimensions. For example, the GHP3-D-30 model has a displacement of 20 cm3/rev, a flow rate of 29 litres/min at 1500 rpm, and maximum pressures of 280, 295, and 310 bar.

Limitations: Reversible pumps have a 15% reduction in pressure ratings compared to monodirectional models. Specific tightening torques for various fittings are provided, with a recommendation to confirm with suppliers.

Overview of jbj Techniques Limited: jbj Techniques Limited is a specialist supplier in the mechanical power transmission and fluid power sectors, offering a wide range of high-quality products and services. The company is recognized for its expertise in hydraulic and mechanical transmission systems, providing comprehensive solutions from design to after-sales support.

Product Offerings: The company offers a diverse portfolio including gear pumps, motors, clutches, couplings, gearboxes, and various fluid power accessories. Notably, jbj provides 14 different designs and 22 styles of gear couplings, among other products like vane pumps, axial and radial piston motors, and pressure intensifiers.

Manufacturing and Design: jbj Techniques employs advanced manufacturing processes such as extrusion and die-casting for components like pump bodies, flanges, and covers. Gears are made from special steel, undergoing case-hardening and quench hardening for durability. The design ensures low pulsation and noise levels, enhancing pump performance.

Technical Expertise and Support: The company boasts a UK-wide team of technical sales engineers and an in-house design team capable of CAD-based system design and certification. Customers benefit from jbj's machine-shop facilities, ensuring quality and cost control.

Quality and Standards: jbj Techniques is ISO certified and committed to international industrial standards. Many products are ATEX certified, meeting directive 94/9/EC requirements, ensuring safety and reliability in hazardous environments.

Customer and Supplier Relationships: jbj Techniques maintains strong relationships with both customers and suppliers, ensuring a stable and loyal client base. The company acts as a sole UK distributor for several European manufacturers, enhancing its product offerings and market reach.

Contact Information: jbj Techniques Limited is located at 28 Trowers Way, Holmethorpe Industrial Estate, Redhill, Surrey, RH1 2LW, United Kingdom. For inquiries, they can be reached at 01737 767493 or via email at [email protected].

Catalog excerpts

GHP series external gear pumps Groups 1, 2 and 3-1

GHP series external gear pumps Groups 1, 2 and 3. GEAR PUMPS Quality Products for Mechanical & Fluid Power

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GHP series external gear pumps Groups 1, 2 and 3-2

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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GHP series external gear pumps Groups 1, 2 and 3-3

Techniques Limited; UK distributor for JTEN JTS pagina/ pages Informazioni generali 2 General information Progetto di base 2 Basic design Gamma di prodotto 4 Product range Versioni speciali 4 Special versions Informazioni tecniche 5 Technical information Note per l'installazione 5 Installation notes Pulizia dell'impianto e filtrazione 6 Cleaning and filtering the system Fluidi idraulici 7 Hydraulic fluids Pressione in aspirazione 7 Inlet pression Velocita minima di rotazione 7 Min. rotation speed Definizione delle pressioni 8 Pressure definition Condotti d'aspirazione...

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GHP series external gear pumps Groups 1, 2 and 3-4

Techniques Limited; UK distributor for . . . . . . . . . . INFORMAZIONI GENERALI GENERAL INFORMATION PROGETTO DI BASE La pompa ad ingranaggi esterni 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 su decenni d'esperienza, alla precisa scelta dei materiali, alla...

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GHP series external gear pumps Groups 1, 2 and 3-5

Techniques Limited; UK distributor for 10COMPONENT! BASE DELLA POMPA 1 - INGRANAGGIO CONDUTTORE 2 - I NGRANAGGI O CONDOTTO 3 - BOCCOLE 4 - CORPO 5 - FLANGIA 6 - COPERCHIO 7 - ANELLO DI TENUTA 8 - GUARNIZIONI COMPENSAZIONE 9 - ANTIESTRUSIONE 10 - ANELLO ELASTICO D'ARRESTO BASIC PUMP'S PARTS

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GHP series external gear pumps Groups 1, 2 and 3-6

Techniques Limited; UK distributor for PRODUCT RANGE Le pompe ad ingranaggi Marzocchi serie GHP sono prodotte in tre differenti gruppi. All'interno di ognuno, le diverse cilindrate (comprese tra 1.4 e 87 cm3/giro) si ottengono variando lo spessore di fascia dentata dell'ingranaggio. La nostra gamma di produzione permette di poter scegliere diverse opzioni di flange, alberi o porte d'aspirazione e mandata. Sono inoltre disponibili versioni di: - pompe reversibili (campo ROTAZIONE ”R”) - pompe con sistemi di trasmissione indipendente (campo OPZIONE "T" o "RA") Le cilindrate disponibili sono espresse...

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GHP series external gear pumps Groups 1, 2 and 3-7

Techniques Limited; UK distributor for . . . . . . . . . . INFORMAZIONI TECNICHE TECHNICAL INFORMATION Per ottenere dalle pompe serie GHP Marzocchi le migliori condizioni in termini di durata e prestazioni è consigliato seguire le raccomandazioni e i suggerimenti di installazione ed utilizzo indicate nel presente catalogo. Per quanto riguarda il sistema idraulico nel quale andrà 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,...

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GHP series external gear pumps Groups 1, 2 and 3-8

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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GHP series external gear pumps Groups 1, 2 and 3-9

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 Use specific mineral oil based...

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GHP series external gear pumps Groups 1, 2 and 3-10

Techniques Limited; UK distributor for , PRESSURE DEFINITION DEFINIZIONE DELLE PRESSIONI Le tabelle di prodotto presentano tre livelli massimi di pressione (P1, P2, P3) alle quali ogni pompa puo essere sottoposta; si intende con: Product tables show three max. pressure levels (P1, P2 and P3) to which each pump can be used. I valori di pressione P1, P2 e P3 possono essere raggiunti solo se non vengono superati i seguenti regimi di rotazione: PI, P2 and P3 values can be attained only if system does not go over the following rotation speeds:

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GHP series external gear pumps Groups 1, 2 and 3-11

Techniques Limited; UK distributor for . . . . . . . . . . Le pompe serie GHP Marzocchi possono essere fornite sia in configurazione monodirezionale che bidirezionale. Il senso di rotazione di una pompa monodirezionale è definito per convenzione nel seguente modo: guardando la pompa frontalmente con l'albero conduttore posizionato verso l'alto e sporgente verso chi guarda, se si tratta di rotazione destra "D", il suo movimento sarà in senso orario e di conseguenza il lato mandata sarà posto a destra e quella d'aspirazione a sinistra. Viceversa per pompe con rotazione sinistra "S" mantenendo naturalmente...

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GHP series external gear pumps Groups 1, 2 and 3-12

Techniques Limited; UK distributor for FORMULE DI USO CORRENTE Velocita del fluido Per calcolare la velocita (v) di un fluido in un condotto: v = Q / 6 •A [m/s] Q = portata [litri/min] Portata erogata da una pompa Per calcolare la portata (Q) di una pompa: Q = V • n • nvol • 10 -3 [litri/min] V = cilindrata [cm3/giro] nvol = rendimento volumetrico (considerare 0,95 come valore indicativo per regimi di rotazione compresi tra 1000 e 2000 giri/min) Momento torcente assorbito da una pompa Per determinare il momento torcente (M) necessario per il funzionamento di una pompa sottoposta...

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GHP series external gear pumps Groups 1, 2 and 3

GHP series external gear pumps Groups 1, 2 and 3

Catalog excerpts

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