Internal gear pumps

Internal gear pump Type EIPH2 high pressure pump with constant displacement volume Characteristics • Internal gear pump with axial and radial gap compensation • Radial compensation with segments • Suction and pressure port radial • Field of application: Industrial hydraulic • Low noise • Long time life • Low pulsation (pressure pulsation ~2 %) • Multi flow combinations Technical Data: Rated Size 004 005 006 008 011 013 016 019 022 025 Spec. volume Vth [cm3/rev]*** Continuous operating pressure [bar]** Peak operating pressure [bar] max. 10 sec. 15% duty cycle** Cut-in...

Internal gear pump Type EIPH3 high pressure pump with constant displacement volume Characteristics The series EIPH were developed particularly for the high requirements of industrial hydraulics. Their favourable noise characteristic, extremely low delivery and pressure pulsation, outstanding efficiency within broad revolution and viscosity ranges, have firmly established gap-compensated high pressure internal gear pumps among high pressure pumps. Simple combinability to multiple pumps with separate or common inlet is given. The EIPH is a consistent advancement that already for over 40 years in...

Internal gear pump Type EIPH5 high pressure pump with constant displacement volume Technical Data: Rated Size Continuous operating pressure [bar]** Peak operating pressure [bar] max. 10sec 15% duty cycle** Cut-in pressure peak [bar]** Operating medium Max. admission pressure (intake side) [bar] Min. admission pressure (intake side) [bar] Degree of filtration Life expectancy Class 20/18/15 due to ISO 4406 not less than 1x 107 load cycles against peak operating pressure Pump noise* (measured in sound chamber) dB[A] n = 1.450 min-1  Δ p = 250 bar   T = 50 °C    Medium: HLP 46 * Measured in anechoic...

Technical Data: Rated Size Operating viscosity [mm2/s] Starting viscosity [mm2/s] Operating medium Max. medium temperature [°C] Min. medium temperatur [°C]] Max. ambient temperature [°C] Min. ambient temperature [°C] Max. admission pressure (intake side) [bar] Min. admission pressure (intake side) [bar] Degree of filtration Life expectancy Class 20/18/15 due to ISO 4406 not less than 1x 107 load cycles against peak operating pressure * Measured in anechoic room of Eckerle Hydraulic Division; Axial microphone distance 1.0 m ** For acceptable pressure at 400-1.800 rpm. Further rpm on request. ***...

EIPH2 Pump with SAE-A-2-hole flange and cylindrical shaft Order example: EIPH2-___RK03-1X rotation direction suction port * is suitable for speed controlled drive applications (available only for sizes 019, 022, 025) Double pump with SAE-A-2-hole flange and cylindrical shaft Order example: EIPH2-___RK00-1X+ Intermediate suction port primary pump primary pump Pressure connections see single pumps

EIPH3 Pump with SAE-B-2-hole flange and cylindrical shaft Order example: EIPH3-___RK23-1X rotation direction suction port * is suitable for speed controlled drive applications (available only for sizes 040, 050, 064) Pressure connections see single pump common suction port size 014-032 size 040-050

EIPH3/2 Double pump with SAE-B-2-hole flange and cylindrical shaft Order example: EIPH3-___RK20-1X+ Pressure connections see single pumps The single pumps of a multiple pump assembly are internally connected, even if you connect to the pump inlet. It is therefore no operating with different fluids possible.

DimensionsPump with SAE-C-2-hole flange and cylindrical shaft Order example: EIPH5-___RA23-1X *32g. rotation direction * Pressure port: SAE 518C, high pressure series (code 62) Double pump with SAE-C-2-hole flange and cylindrical shaft Order exampie: EIPH5-___sK23-1X+EIPH3-___RP33-1X rotation direction

DimensionsPump with SAE-C-2-hole flange and splined shaft Order example: EIPH5-___RB23-1X rotation direction * Pressure port: SAE 518C, high pressure series (code 62) Double pump with SAE-C-2-hole flange and splined shaft Order example: EIPH5-___SL23-1X+ EIPH3-___RE36-1X * Pressure port: SAE 518C, high pressure series (code 62)

EIPH6 Pump with SAE-D-2-hole flange and cylindrical shaft Order example: EIPH6-___RK23-1X rotation direction * Pressure port: SAE 518C, high pressure series (code 62) Double pump with SAE-D-2-hole flange and cylindrical shaft Order example: EIPH6-___RK20-1X+EIPH6-___RP30-1X rotation direction Above size 160 no common inlet possible Pressure connections see single pumps

DimensionsDouble pump with SAE-D-2-hole flange and cylindrical shaft order example: EIPH6-___RK23-1X+EIPH2-___RP30-1X EIPH6 Size Pressure connections see single pumps suction port Double pump with SAE-D-2-hole flange and cylindrical shaft Order example: EIPH6-___RK20-1X+EIPH3-___RP30-1X EIPH6 EIPH3 Size Pressure connections see single pumps Above size 160 no common inlet possible

EIPH SAE flange metric tapped Version a SAE pipe threaded flange Nr.

Connecting flanges SAESummary of SAE Pressure- and Suction flange SAE J 518C, ISO 6162 EIPH2-004-005

Ordering Code EIP H2 - 016 RK03 - IX SXXX Special version number (not applicable with standard pumps or when the type key is unambiguous) Revision code 1st number: Change of mounting dimensions 2nd number: Change of pump with same mounting dimensions Intake and outlet connection 3: According to SAE J 518 6: According to SAE J 518 for enlarged suction post for speed controlled drive applications 0: suction port closed; common inlet - other flanges on request -Fastening flange 0: SAE/A 2-hole flange, centring collar 0 82,55 2: SAE/B 2-hole flange, centring collar 0 101,6 2: SAE/C 2-hole flange,...

Variable-speed operation As a matter of principle, Eckerle internal gear pumps are eminently suited for variable speed operation. Even at low viscosities and high temperatures of the pumping medium, the pumps run extremely energy efficiently and highly dynamically over a wide speed range due to the radial and axial gap compensation. However, with variable speed operation certain boundary conditions should be observed. The exemplary cycle shown below illustrates this clearly.