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3P Series Gear Pumps

3P Series Gear Pumps
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3P Series Gear Pumps

Product catalog summary
Company Profile
Hema Endüstri A.Ş., established in 1973 as Hema Hidrolik A.Ş., is based in Çerkezköy I Tekirdağ, Turkey. Initially focused on hydraulic gear pumps and lift covers for agricultural tractors, the company has diversified into industries such as construction, forestry, mining, and automotive. Renamed in 1998, it began producing its own line of agricultural tractors in 2002. The company employs 2000 people across 10 production units and exports 70% of its products to over 20 countries.

Quality and Certifications
Hema Endüstri A.Ş. is certified with ISO 9001, AQAP 120, and ISO/TS 16949, ensuring high-quality standards as a full system supplier and co-designer in vehicle development.

Technical Specifications and Procedures
The document details the 3P Gear Pumps series, covering:
  • Gear Pump Coding System
  • Technical Data
  • Mounting Flanges
  • Drive Shafts
  • Flange and Porting Options
  • Design Calculations for Pumps

Pump Application Data
Key considerations for pump application include:
  • Direct and Indirect Drives: Avoid severe axial or radial loads on the pump shaft for direct drives. Indirect drives require careful calculation of side loads on pump bearings.
  • Pump Rotation and Mounting: Proper alignment and mounting are essential to minimize vibration and ensure efficient operation.
  • Pump Suction and Discharge: Use flexible hoses to minimize vibration and ensure proper sizing of inlet and outlet piping to avoid high suction vacuum and excessive pressure drops.

Additional Considerations
Issues such as cavitation, oil reservoir capacity, and filtration are addressed. Maintaining proper oil levels and using clean, approved oil is emphasized to prevent contamination and ensure efficient operation.

Specifications
The hydraulic system must include a suction line strainer (100 mesh) and a return line filter (10 microns absolute rated). High-quality mineral oil with a viscosity not less than 5.5 centistokes is required. ISO VG 68 oils are recommended for normal temperatures, while ISO VC 32 oils are suitable for cold climates.

Procedures
Regular oil level checks are necessary, using only clean, approved oil for topping and filling. The reservoir capacity should be at least twice the pump output per minute at maximum speed to prevent air entrainment and ensure adequate heat dissipation.

Standards and Recommendations
To minimize air entrainment, oil return lines should be below the oil surface, and suction ports should be well immersed. Adequate filtration is necessary to prevent dirt entry.

Pump Application Data
Operating temperature ranges from -25°C to +80°C, and up to +110°C with Viton seals. High volumetric efficiencies are achieved through precise control of gear tip leakage and pressure balancing systems.

Technical Data
Includes specifications for various pump models, such as displacement, flow, maximum outlet pressure, and speed ranges, along with performance curves and design calculations.

Design Calculations
Formulas are provided for calculating flow, displacement, drive speed, pressure, drive torque, and power, along with efficiency metrics.
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Catalog excerpts

3P Series Gear Pumps-2

Perfil de la compañía Hema Endüstri A.Ş. fue fundada con el nombre comercial de Hema Hidrolik A.Ş. en 1973, en la Zona Industrial Organizada de Çerkezköy I Tekirdağ, situada en el noroeste de Turquía. Durante los primeros años de producción, se elaboraron bombas de engranajes hidráulicas y cubiertas elevadoras hidráulicas para tractores agrícolas. A medida que transcurrieron los años, la gama de productos de la compañía aumentó para atender a otras industrias y cambió su nombre a Hema Endüstri A.Ş. en 1998. Hema Endüstri A.Ş. produce actualmente sistemas hidráulicos completos ...

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3P Series Gear Pumps-3

ÍNDICE INDEX Introducción / Introduction Sistema de codificación de bombas de engranajes / Gear Pump Coding System Datos técnicos / Technical Data Bombas de engranajes / Gear Pumps Bridas de montaje / Mounting Flanges Ejes de transmisión / Drive Shafts Cálculos de diseño para las bombas / Design Calculations for Pumps

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3P Series Gear Pumps-4

DESCARGA DE LA BOMBA PUMP APPLICATION DATA Revise las notas a continuación para obtener un alto rendimiento de la bomba que es uno de los componentes del sistema hidráulico. TRANSMISIONES DE BOMBAS Transmisión directa La transmisión no debe imponer cargas axiales o radiales fuertes sobre el eje de la bomba, dado que bajo estas condiciones puede haber fallas prematuras debido a la sobrecarga en los cojinetes de la bomba. Las transmisiones directas son preferibles cuando resulte practicable, usando un acople entre el impulsor principal y la bomba que permita la autoalineación de los ejes sin cargas laterales indebidas. ...

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3P Series Gear Pumps-5

DATOS DE APLICACIÓN DE LA BOMBA PUMP APPLICATION DATA Una flecha grabada en la estructura de la bomba muestra la dirección en que debe girarse el eje de transmisión para operar la bomba. Esto siempre se indica hacia la derecha o hacia la izquierda, mirando desde el extremo del eje de transmisión (Vea la Fig. 4) An arrow embossed on the pump body shows the direction in which the drive shaft must be turned to operate the pump. This is always stated as clockwise or counter‐clockwise, as viewed from drive shaft end (See Fig. 4) Salida Outlet Entrada Inlet Fig. 4 Rotación de la bomba Fig. 4 Pump Rotation...

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3P Series Gear Pumps-6

DATOS DE APLICACIÓN DE LA BOMBA PUMP APPLICATION DATA CAVITACIÓN El aceite hidráulico usado en la mayor parte de los sistemas contiene aproximadamente un 10% de aire ocluido o retenido por volumen. Bajo ciertas condiciones de vacío, se libera del aceite este aire dentro del sistema causando burbujas. Estos bolsones de aire colapsan al someter a presión; la cavitación subsiguiente de este colapso crea erosión del metal adyacente. Cuanto mayor sea el contenido de aire dentro del aceite, tanto más grave será la erosión resultante creada. Las principales causas de sobreaeración del aceite son las fugas, particularmente en el ...

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3P Series Gear Pumps-7

DATOS DE APLICACIÓN DE LA BOMBA PUMP APPLICATION DATA OIL RESERVOIR ‐25°C…+80°C ‐25°C…+110°C with Viton Seals HIGH EFFICIENCY (1PN PUMPS ONLY) High volumetric efficiencies produced by the pumps are achieved in part by careful attention to the control of gear tip leakage. The body to gear geometry is arranged such that during the running in test cycle, to which every unit is subjected, the gears cut perceptible tracks in the body. This results in virtually zero clearance between the gear tips and producing a near perfect tip seal under running conditions. Las altas eficiencias volumétricas producidas por las bombas se ...

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3P Series Gear Pumps-8

SISTEMA DE CODIFICACIÓN DE LA BOMBA DE ENGRANAJES GEAR PUMP CODING SYSTEM REPEAT FOR EACH PUMP SECTION REPEAT FOR EACH PUMP SECTION DISPLACEMENT INLET

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3P Series Gear Pumps-9

DATOS TÉCNICO TECHNICAL DATAS MODELO MODEL DESPLAZAMİENTO DISPLACEMENT FLUJO PRESIÓN MÁX. DE SALIDA FLOW MAX. OUTLET PRESSURE (1500rpm/rpm ‐ rpm) lt/rpm ‐ lt/min cm³/rev (cm³/rev) bar VELOCIDAD MÍN. MIN. SPEED rpm ‐rpm CURVAS DE RENDIMIENTO / PERFORMANCE CURVES Aceite /Oil 35 cSt 50°C Presión operativa Working Pressure Curvas de flujo Flow Curves

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3P Series Gear Pumps-10

BOMBAS DE ENGRANAJES GEAR PUMPS Ancho del cuerpo Body Width Chaveta Woodruff Woodruff Key MODELOS MODEL DESPLAZAMİENTO DISPLACEMENT cm³/rev (cm³/rev)

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3P Series Gear Pumps-11

BRIDAS DE MONTAJE MOUNTING FLANGES BRİDA CUADRADA SQUARE FLANGE Agujeros de montaje Mounting Holes Agujeros de montaje Holes

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3P Series Gear Pumps-12

BRIDAS DE MONTAJE MOUNTING FLANGES Agujeros de montaje Holes

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3P Series Gear Pumps-13

BRIDAS DE MONTAJE MOUNTING FLANGES

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3P Series Gear Pumps-14

BRIDAS DE MONTAJE MOUNTING FLANGES

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3P Series Gear Pumps-15

BRIDAS DE MONTAJE MOUNTING FLANGES

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3P Series Gear Pumps-16

TIPOS DE EJE SHAFT TYPES ESTRIADO EN ESPIRAL SAE C 14 DIENTES, 12/24 DP DIÁMETRO MAYOR: ø31.17 INVOLUTE SPLINE SAE C 14 TEETH, 12/24 DP MAJOR DIAMETER: ø31.17 CHAVETA CUADRADA SQUARE KEY MÍN. ROSCADO COMPLETO MIN. FULL THREAD SOBRE ARO DE RETENCIÓN OVER RETAINING RING MÍN. ROSCADO COMPLETO MIN. FULL THREAD

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3P Series Gear Pumps-17

TIPOS DE AGUJEROS HOLE TYPES ROSCADO UNF CON COLLARÍN DE JUNTA TÓRICA TYPE 2 UN THREAD WITH ORING BOSS TIPO 1 BRIDA RECTANGULAR TYPE 1 RECTANGULAR FLANGE CÓDIGO CODE CÓDIGO CODE

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3P Series Gear Pumps-18

CÁLCULOS DE DISEÑO PARA BOMBAS DESIGN CALCULATIONS FOR PUMPS Los cálculos de diseño para bombas se basan en los parámetros siguientes. The design calculations for pumps are based on the following parameters. : Potencia de transmisión : Eficiencia volumétrica :Eficiencia hidráulica‐mecánica : Eficiencia general Las siguientes fórmulas describen diversas relaciones. Incluyen factores de corrección para adaptar los parámetros a las unidades usuales que se encuentran en la práctica. The following formulas describe the various relationships. They include correction factors for adapting the parameters ...

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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.