Performance Spectrum Transfer and Lube- Brochure

Performance SpectrumH e a r t o f H i g h t e c hGear Pumps forMechanical Engineering23Applications and areas of applicationStructural design Frequently pumped mediaGear Pumps as universal lubrication and feed pumpsScherzinger gear pumps are used for lubricating media, ranging from die-sel to heavy oil.The pump can be used:¦ for low-viscous to medium-viscous, particle-free fluids¦ for fluids with good lubricating properties¦ for differential pressures 0 to 30 bar¦ at inlet pressures of -0.8 mbar (absolute) to 10 bar overpressure¦ for speeds of 0 – 1.800 rpm¦ in normal as well as explosive atmospheres (ATEX II 2G)Examples ofapplication are:¦ Paint and varnish: Transfer of paint and varnish during the production process¦ Cooling and air compressors: Lubrication of connecting rod bearing and crank- shaft bearings¦ Transmission: Lubrication of roller bearings and tooth flanks for increased torques¦ Generation of industrial process heat: Filling and draining of thermal oil systems¦ Wind power stations: Lubrication of large transmissions¦ Steam turbines: Lubrication of reduction gearsGear pumps belong to the group of rotating displacement pumps. They pump fluids by means of two intermeshing rotors. A distinction is made between external and internal gear pumps, depending on the gear teeth design. The rotor fitted on the driven shaft of the gear pump transfers the rotary movement to the second rotor. A fluid volumeproportional to the speed is displaced by the rotation. This allows fluids even to be extracted and pumped against high pressures.As a specialist for rotating displacement pumps, Scherzinger's focus with regard to the described pumps is solely on all-purpose external gear pumps. Due to the low inner friction values, this pump principle is very energy- efficient and the pump is subject to a low degree of wear.Functional principleOne gear is driven by means of the drive shaft. The other gear is turned by the tooth engagement. The fluid is extracted through a tooth space opening in the tooth engagement area.The fluid flows through the inlet duct on the suction side into the gear pre-chamber and then into the tooth spaces.¦ Lubricating oil¦ Thermal oil¦ Hydraulic oil¦ Paint and varnish¦ Emulsions¦ Cocoa paste¦ Liquid soap¦ Heat transfer fluid¦ Vegetable oil¦ Diesel¦ Polyol ¦ Glycol¦ WaxThe effect of the rotation is that the fluid is transported along the pump casing wall in the gear spaces to the outlet and then squeezed out.Shafts with gears fitted on them are installed with sleeve bushings on both sides of the pump casing and cover in order to absorb high bearing loads.45Implementable flow ratesPumpe vg Pump speed (rpm)(ml/rev) 470 690 830 950 1150 1450 175051 2.1 0.97 1.43 1.72 1.97 2.38 3.00 3.6276 2.8 1.32 1.93 2.32 2.66 3.22 4.06 4.90101 4.0 1.90 2.79 3.35 3.84 4.65 5.86 7.07151 5.7 2.68 3.94 4.74 5.42 6.57 8.28 9.99251 10.9 5.12 7.52 9.05 10.4 12.5 15.8 19.1351 20.9 9.83 14.4 17.4 19.9 24.1 30.3 36.6451 31.0 14.6 21.4 25.7 29.5 35.7 45.0 54.3551 49.0 23.0 33.8 40.7 46.6 56.4 71.1 85.8Application limitsBasic range Customer-specific applicationsTemperature range -20 ° to 160 °C -40 ° to 250 °CDifferential pressure 30 bar 40 barInlet pressure -0.8 to 10 bar -0.9 to 10 barViscosity range 2 to 30,000 mPas 1 to 50,000 mPasThe selected pump speeds correspond to the available rated speeds of standar-dized industrial motors operated at 50 and 60 Hz.The flow rate of gear pumps is virtually proportional to their speed.The adjacent table shows the possible flow rates of the respective pump sizes in l/min.The dimensions are based on media viscosity of 50 mPas and non-pressurized pumping.If the differential pressure is increased or the viscosity reduced, the actual flow rate drops due to the gap losses.Gear pumps asuniversal lubricationand feed pumpsPlease also observe that the maximum possible differential pressure is lower at lower viscosity. At high viscosity, the pump speed must be reduced to avoid cavitation.Flow rate (l/min)Differential pressure (bar)Size 351Flow rate (l/min)Differential pressure (bar)Size 251Flow rate (l/min)Differential pressure (bar)Size 451Flow rate (l/min)Differential pressure (bar)Size 551Performance curves of pump sizes 51 and 76Performance curves of pump sizes 101 and 151Performance curves of pump sizes 451 and 551? 1750 rpm | ? 1450 rpm | ? 1150 rpm | ? 950 rpm | ? 830 rpm | ? 690 rpm | ? 470 rpm0,40 0,300,200,10Performance curves of pump sizes 251 and 3510,40 0,300,200,10Flow rate (l/min)Differential pressure (bar)Size 76Flow rate (l/min)Differential pressure (bar)Size 51Flow rate (l/min)Differential pressure (bar)Size 101Flow rate (l/min)Differential pressure (bar)Size 15167Gear Pumps in foot-mounted designAn overview of your benefits¦ Different sealing systems available¦ Integrated, adjustable pressure relief valves to protect the piping¦ Universal design on base frame¦ Variable design of drives possible¦ Low speeds for high viscosities possible¦ Can also be used for particle-loaded mediaLubrication and feed pumps Gear pumps of this design are mainly installed on a base frame for use. The very different drive concepts used by Scherzinger give you the freedom of choice in order to find the suitable drive for your application. For example, electric motors in foot-mounted design or gear motors are easy to adapt.A version with reinforced radial bearing on the shaft end is available for driving by means of a toothed or V-belt. The drive and pump are ideally decoupled, ther-mally and mechanically.Gear pumps of this design are available for different adjustment ranges with or without an adjustable pres-sure relief valve.There are several shaft seal versions and materials available for selection.Single or double lip seal rings or packing versions are possible for application with viscous or abrasive media.If necessary, the pumps can be supplied as customized designs also with shaft seals. The materials (NBR, FKM or EPDM) of all seals can be adapted to their application.Dimensions of foot-mounted pumps(in mm)???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ????????????? ??????????????????????????????????????????????????????????? ????????????????Flow variations Sealing variationsSize d1 d2 d3 d4 d5 b1 b2 1) b3 b4 b5 I1 2)AI1 1)BI2 3)NI2 4)S51 G 1/4 19 6.4 10 61 58 57.3 48 64 3 48 49 44 5476 G 1/4 19 6.4 10 61 58 57.3 48 64 3 48 49 44 54101 G 3/8 23 9 12 82 77 76.5 60 76 4 62 62 57 70151 G 3/8 23 9 12 82 77 76.5 60 76 4 62 62 57 70251 G 1/2 27 9 14 95 91 85.5 74 96 5 72 72 67 82351 G 3/4 33 11.5 16 114 106,6 99 84 110 5 81 88 71 87451 G 1 40 11.5 18 140 130,6 120 100 130 6 89 97 79 97551 G 1 1/4 50 11.5 18 140 130,6 120 100 130 6 114 122 79 99Sealing variationI3 I4 3)NI4 4)SI5 h1 h2 h3 h4 t1 Weight 5) kgFlow rate6) rpmP 7)kW15 25 24 24 11.3 30.9 40 7.5 0.8 0.9 2.7 0.0915 25 24 24 11.3 30.9 40 7.5 0.8 0.9 3.4 0.1119 30 32.1 32.5 13 42 54 10 0.8 2.15 5.2 0.1719 30 32.1 32.5 13 42 54 10 0.8 2.2 7.4 0.2622 32 33 44 15.2 50 65 11 0.8 3.4 14.9 0.5625 34 35 49.27 17.2 58 77 10.27 0.3 4.86 28.4 0.9626 37 39 60.13 20.5 71.3 94 11.77 0.3 8.5 43.2 1.526 37 41 60.13 19.6 71.3 94 11.77 0.3 10 69.1 2.3Exemplary illustration89Gear Pumps in flange designAn overview of your benefits¦ Integrated, adjustable pressure relief valves to protect the piping¦ Can be connected directly to your drive¦ Variable connection of drives possible¦ Low speeds possibleLubrication and feed pumps Gear pumps of this design are mainly used whenever the pump is to be connected to units with rotating shafts without a separate electric drive, usually in order to pump lubricating oil or fuel.For example, the pump can be screwed directly onto a transmission casing.The pump shaft is usually plugged into a hollow shaft in the process.You do not need any additi-onal coupling elements. Of course, connections with flexible couplings are also possible.This allows the piping to be connected flexibly to the pump whenever necessary. Pumps of this design are available with or without an adjustable pressure relief valve, also for different ad-justment ranges.Single or double lip seal rings are available as shaft seals.Of course, the seal materials can be varied to suit your application.Dimensions of flange-mounted pumps(in mm)Exemplary illustration1) Dimension only applies to versions with pressure relief valve2) Dimension only applies to versions without pressure relief valve3) Maximum weight in kg4) Flow rate at a speed of 1450 rpm with 50 mPas me-dia viscosity and a differential pressure of 10 bar5) Drive capacity required under the operating conditions of 4)FlowvariationsSize d1 d2 d3 d4 d5 d6 d7 d8 b1 b2 1) b3 I1 2)AI1 2)BI2 I3 I4 I5 h1 h2 t1 Wt.3) kgFr.4) rpmP 5)kW51 G 1/4 19 10 61 50 60 69.5 5.3 58 57.3 3 65 66 17 32 2 6 11.3 9.1 0.8 0.950 2.7 00.976 G 1/4 19 10 61 50 60 69.5 5.3 58 57.3 3 65 66 17 32 2 6 11.3 9.1 0.8 1.000 3.4 0.11101 G 3/8 23 12 82 70 84 100 7 77 76.5 4 86 86 22 43 3 7 13 12.1 0.8 2.100 5.2 0.17151 G 3/8 23 12 82 70 84 100 7 77 76.5 4 86 86 22 43 3 7 13 12.1 0.8 2.132 7.4 0.26251 G 1/2 27 14 95 90 100 120 7 91 85.5 5 104 104 29 54 3 8 15.2 15.15 0.8 3.394 14.9 0.56351 G 3/4 33 16 114 100 120 140 9.5 106.6 99 5 114 121 38 58 4 9 17.2 19 0.3 5.849 28.4 0.96451 G 1 40 18 140 110 130 150 11.5 130.6 120 6 127 135 42 68 4 10 19.6 22.7 0.3 8.650 43.2 1.5551 G 1 1/4 50 18 140 110 130 150 11.5 130.6 120 6 152 160 42 64 4 10 19.6 22.7 0.3 11.300 69.1 2.3?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ??????????????????????? ???????????????????????????? ??? ????????????? ?? ?? ?? ?? ?? ?? ?? ?? ????? ?? ?????????????? ?? ?? ?? ?? ?? ?? ???????????????????????????????????????????? ????? ?? ?? ?? ?? ?? ???? ??? ?? ???? ? ?? ?? ?? ?? ? ? ???? ??? ??? ????? ??? ?????? ????? ?? ?? ?? ?? ?? ???? ??? ?? ???? ? ?? ?? ?? ?? ? ? ???? ??? ??? ????? ??? ??????? ????? ?? ?? ?? ?? ?? ??? ? ?? ???? ? ?? ?? ?? ?? ? ? ?? ???? ??? ????? ??? ??????? ????? ?? ?? ?? ?? ?? ??? ? ?? ???? ? ?? ?? ?? ?? ? ? ?? ???? ??? ????? ??? ??????? ????? ?? ?? ?? ?? ??? ??? ? ?? ???? ? ??? ??? ?? ?? ? ? ???? ????? ??? ????? ???? ??????? ????? ?? ?? ??? ??? ??? ??? ??? ????? ?? ? ??? ??? ?? ?? ? ? ???? ?? ??? ????? ???? ??????? ??? ?? ?? ??? ??? ??? ??? ???? ????? ??? ? ??? ??? ?? ?? ? ?? ???? ???? ??? ????? ???? ?????? ??????? ?? ?? ??? ??? ??? ??? ???? ????? ??? ? ??? ??? ?? ?? ? ?? ???? ???? ??? ?????? ???? ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ??????????????????????? ???????????????????????????? ??? ????????????? ?? ?? ?? ?? ?? ?? ?? ?? ????? ?? ?????????????? ?? ?? ?? ?? ?? ?? ???????????????????????????????????????????? ????? ?? ?? ?? ?? ?? ???? ??? ?? ???? ? ?? ?? ?? ?? ? ? ???? ??? ??? ????? ??? ?????? ????? ?? ?? ?? ?? ?? ???? ??? ?? ???? ? ?? ?? ?? ?? ? ? ???? ??? ??? ????? ??? ??????? ????? ?? ?? ?? ?? ?? ??? ? ?? ???? ? ?? ?? ?? ?? ? ? ?? ???? ??? ????? ??? ??????? ????? ?? ?? ?? ?? ?? ??? ? ?? ???? ? ?? ?? ?? ?? ? ? ?? ???? ??? ????? ??? ??????? ????? ?? ?? ?? ?? ??? ??? ? ?? ???? ? ??? ??? ?? ?? ? ? ???? ????? ??? ????? ???? ??????? ????? ?? ?? ??? ??? ??? ??? ??? ????? ?? ? ??? ??? ?? ?? ? ? ???? ?? ??? ????? ???? ??????? ??? ?? ?? ??? ??? ??? ??? ???? ????? ??? ? ??? ??? ?? ?? ? ?? ???? ???? ??? ????? ???? ?????? ??????? ?? ?? ??? ??? ??? ??? ???? ????? ??? ? ??? ??? ?? ?? ? ?? ???? ???? ??? ?????? ???? ?????????? 1011An overview of your benefits¦ Integrated, adjustable pressure relief valves to protect the piping¦ Supplied with an electric drive¦ Variable connection of drives possible ¦ Also available according to ATEX 94/9/EGLubricationand feed pumpsGear pumps with electric motorGear pumps of this design can be used for a multitude of purposes for completely different applications.The compact design allows universal installations due to the direct connection to an electric drive. The gear pump's shaft is firmly connec-ted to the motor shaft via a flexible coupling.The exact positioning of the pump on the electric motor is performed with a motor adapter.These electric-motor-driven gear pumps are usually used for pumping processes, such as the transfer from storage tanks, as oil circulation pumps, as lubrication pumps or also as pumps for cooling lubricants.Electric drives are available in almost all commercially available versions. Various mechanical, electrical and also explosion-proof versions are possible.Our gear pumps of this design are available with or without adjustable pressure relief valves, also for different adjustment ranges. Single or double lip seal rings are available as shaft seals. Of course, the seal materials can be varied application specifically.Dimensions of motor pumps(in mm)??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????????? ????? ??????????????????????????????????????Exemplary illustration1) Dimension only applies to versions with pressure relief valve2) Dimension only applies to versions without pressure relief valve3) Maximum weight in kg4) Flow rate at a speed of 1450 rpm with 50 mPas media viscosity and max. possible differential pressure according to 5)5) Maximum possible differential pressure with the installed motor powerFlowvariationssuitable norm motorsize IMB 14/34Size d1 d2 d3 d4 b1 b2 1) b3 I1 I2 1)A B 2)I3 I4 h1 h2 t1 MotorsizeFlange P kWWt. 3) kgFr. 4) rpmP4)bar51 G 1/4 191207 58 57.3100 85 118 119 40 809.1630.863 120 0.18 7.6 2.3 22140 112 90 123 124 45 90 71 71 140 0.37 9.1 2 3076 G 1/4 191207 58 57.3100 85 118 119 40 809.1630.863 120 0.18 6.8 3.2 16140 112 90 123 124 45 90 71 71 140 0.37 8.6 2.5 30101 G 3/8 23140 777 76.5112 101 144 144 45 9012.1710.871 140 0.37 9.7 4.2 24160 9 125 111 154 154 50 100 80 80 160 0.75 21.6 3.8 30151 G 3/8 23140 777 76.5112 101 144 144 45 9012.1710.871 140 0.37 9.7 6.9 17160 9 125 111 154 154 50 100 80 80 160 0.75 21.5 5.9 30251 G 1/2 27140 791 85.5112 117 167 167 45 9015.1710.871 140 0.37 11.8 15.2 5160 9 125 137 187 187 50 100 80 80 160 0.75 22.8 14.5 14160 9 140 137 187 187 56 125 90 90L 160 1.5 19.4 13.1 30351 G 3/4 33 1609106.6 99125 143 199 206 50 10019800.3801600.75 26.5 29 79 140 153 209 216 56 125 90 90L 1.5 25 27.1 1712 160 183 239 246 63 140 100 100L 3 35.2 24.7 30451 G 1 40 1609130.6 120125 153 215 224 50 10022.7800.3801600.75 23.3 44.4 39 140 163 225 234 56 125 90 90L 1.5 26.7 43.2 1012 160 183 245 254 63 140 100 100L 3 39.7 40.6 2412 190 183 245 254 70 140 112 112M 4 54 39.7 30551 G 1 1/4 50 1609130.6 120140 183 270 279 56 12522.7900.390L1601.5 40 70 512 160 183 270 279 63 140 100 100L 3 42.1 68.3 1412 190 183 270 279 70 140 112 112L 4 56.4 67.1 20??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????????? ????? ??????????????????????????????????????1213Zahnrad – Flanschpumpe 41 – 551 F... Pumpenfabrik Ernst Scherzinger GmbH & Co. KG I Bregstr. 23-25 I 78120 Furtwangen I Tel.: +49 (0) 7723 6506-0 I Fax: (0) 7723 6506-40 I E-Mail: info@scherzinger.de I www.scherzinger.de Die Bestimmung der Drehrichtung erfolgt immer mit Blick auf das Pumpenwellenende (grauer Pfeil). Die Drehrichtung wird durch den blauen Pfeil angezeigt. Ausführung ... FAR Drehsinn rechts (Uhrzeigersinn), Saugseite links, Druckseite rechts Ausführung ... FAL Drehsinn links (gegen Uhrzeigersinn), Saugseite rechts, Druckseite links Ausführung ... FBR Drehsinn rechts (Uhrzeigersinn), Saugseite links, Druckseite rechts Ausführung ... FBL Drehsinn links (gegen Uhrzeigersinn), Saugseite rechts, Druckseite links Bei Pumpen der Variante ‘B‘ mit Druckbegrenzungsventil ist die Ventilseite immer Saugseitig.Ausführung ... FC/SR Drehsinn beliebig, Saugseite rechts, Druckseite links Ausführung ... FC/SL Drehsinn beliebig, Saugseite links, Druckseite rechts Zahnrad – Flanschpumpe 41 – 551 F... Pumpenfabrik Ernst Scherzinger GmbH & Co. KG I Bregstr. 23-25 I 78120 Furtwangen I Tel.: +49 (0) 7723 6506-0 I Fax: (0) 7723 6506-40 I E-Mail: info@scherzinger.de I www.scherzinger.de Die Bestimmung der Drehrichtung erfolgt immer mit Blick auf das Pumpenwellenende (grauer Pfeil). Die Drehrichtung wird durch den blauen Pfeil angezeigt. Ausführung ... FAR Drehsinn rechts (Uhrzeigersinn), Saugseite links, Druckseite rechts Ausführung ... FAL Drehsinn links (gegen Uhrzeigersinn), Saugseite rechts, Druckseite links Ausführung ... FBR Drehsinn rechts (Uhrzeigersinn), Saugseite links, Druckseite rechts Ausführung ... FBL Drehsinn links (gegen Uhrzeigersinn), Saugseite rechts, Druckseite links Bei Pumpen der Variante ‘B‘ mit Druckbegrenzungsventil ist die Ventilseite immer Saugseitig.Ausführung ... FC/SR Drehsinn beliebig, Saugseite rechts, Druckseite links Ausführung ... FC/SL Drehsinn beliebig, Saugseite links, Druckseite rechts Zahnrad – Flanschpumpe 41 – 551 F... Pumpenfabrik Ernst Scherzinger GmbH & Co. KG I Bregstr. 23-25 I 78120 Furtwangen I Tel.: +49 (0) 7723 6506-0 I Fax: (0) 7723 6506-40 I E-Mail: info@scherzinger.de I www.scherzinger.de Die Bestimmung der Drehrichtung erfolgt immer mit Blick auf das Pumpenwellenende (grauer Pfeil). Die Drehrichtung wird durch den blauen Pfeil angezeigt. Ausführung ... FAR Drehsinn rechts (Uhrzeigersinn), Saugseite links, Druckseite rechts Ausführung ... FAL Drehsinn links (gegen Uhrzeigersinn), Saugseite rechts, Druckseite links Ausführung ... FBR Drehsinn rechts (Uhrzeigersinn), Saugseite links, Druckseite rechts Ausführung ... FBL Drehsinn links (gegen Uhrzeigersinn), Saugseite rechts, Druckseite links Bei Pumpen der Variante ‘B‘ mit Druckbegrenzungsventil ist die Ventilseite immer Saugseitig.Ausführung ... FC/SR Drehsinn beliebig, Saugseite rechts, Druckseite links Ausführung ... FC/SL Drehsinn beliebig, Saugseite links, Druckseite rechts Zahnrad – Flanschpumpe 41 – 551 F... Pumpenfabrik Ernst Scherzinger GmbH & Co. KG I Bregstr. 23-25 I 78120 Furtwangen I Tel.: +49 (0) 7723 6506-0 I Fax: (0) 7723 6506-40 I E-Mail: info@scherzinger.de I www.scherzinger.de Die Bestimmung der Drehrichtung erfolgt immer mit Blick auf das Pumpenwellenende (grauer Pfeil). Die Drehrichtung wird durch den blauen Pfeil angezeigt. Ausführung ... FAR Drehsinn rechts (Uhrzeigersinn), Saugseite links, Druckseite rechts Ausführung ... FAL Drehsinn links (gegen Uhrzeigersinn), Saugseite rechts, Druckseite links Ausführung ... FBR Drehsinn rechts (Uhrzeigersinn), Saugseite links, Druckseite rechts Ausführung ... FBL Drehsinn links (gegen Uhrzeigersinn), Saugseite rechts, Druckseite links Bei Pumpen der Variante ‘B‘ mit Druckbegrenzungsventil ist die Ventilseite immer Saugseitig.Ausführung ... FC/SR Drehsinn beliebig, Saugseite rechts, Druckseite links Ausführung ... FC/SL Drehsinn beliebig, Saugseite links, Druckseite rechts Direction of rotation Pressure relief valves Line connectionsAdditional equipmentShaft sealsAll gear pumps of this series are designed for one direc-tion or variable direction of rotation.They are available as coun-ter-clockwise or clockwise versions and may always only be operated in the pre-defined direction of rotation. The direction of rotation is All gear pumps are available without or with an integrated pressure relief valve. The pres-sure relief valve is designed as a spring-preloaded piston valve. The spring pretension and hence the set opening pressure can be varied within geometric limits by means of a setting screw. Different springs are available, depending on the desired adjustment range and the pump size.defined with the view on the shaft end.The direction of rotation is always determined with the view on the pump shaft end (gray arrow).The direction of rotation is indicated by the blue arrow.Pressure control ranges in barFeather 1 Feather 2 Feather 35176 0 – 3 3 – 8 8 – 15 101151 0 – 8 8 – 15 15 – 25251 1 – 8 8 – 20 15 – 29351 0 – 5 5 – 11 11 – 20451551 0 – 5 5 – 10 10 – 16Clockwise directionClockwise direction of rotationsuction side on the leftpressure side on the rightVariable directionVariable direction of rotationsuction side on the rightpressure side on the leftCounter-clockwise direction ofrotation, suction side on the rightpressure side on the leftCounter-clockwise directionVariable direction of rotationsuction side on the leftpressure side on the rightVariable directionSeveral types of shaft seals are available, depending on the pump version. The basic seal is a lip seal ring for pumping well-lubricating and low-viscous to medium-viscous fluids, such as lubri-cating oil. To overcome high suction heads, we recommend using a double-acting lip seal ring for sealing, if possible filled with grease for permanent lubrication.It is recommended to use a packed gland for fluids with poor lubricating proper-ties if the pumped fluid may harden or abrasive fluids are to be pumped.It can be slightly retightened in the event of wear and resulting leaks. Graphite and PTFE-soaked fabrics are mainly used as seal materials.Pump BSP NPT ISO 1092-1Form B, PN 1651, 76 1/4 " 3/8 " –101, 151 3/8 " 1/2 " – 251 1/2 " 3/4 " DN 20351 3/4 " 1 " DN 25451 1 " 1 1/4 " DN 32551 1 1/4" 1 1/4 " –Scherzinger gear pumps are distinguished by their great variability of materials as well as the number of different piping connection options.For example, at least two different connection variants are possible for all versions.All available connection options for installation in your system are specified in the following table.Temperature (°C)Sealing material1415Application in potentially explosive areasApplication in potentially explosive areas and drive variantsPump drivesOur gear pumps are pre-pared for connection to industrial squirrel-cage motors in compliance with the IEC standard.The following table shows the combination options of the various pump and motor sizes.The following drive varia-tions are therefore possible with these motor sizes:? Any connection voltages at 50 Hz or 60 Hz line frequency? Fixed speed or pole- changing motors? Increased safety or flameproof enclosure for potentially explosive areasIl 2GZone 1Zone 2Il 2DZone 21Zone 22With single-acting lip seal ringWith double-acting lip seal ringWith integrated pressure relief valveWithpacking51 ¦ ¦ ¦ ¦ — —76 ¦ ¦ ¦ ¦ — —101 ¦ ¦ ¦ ¦ — —151 ¦ ¦ ¦ ¦ — — 251 ¦ ¦ ¦ ¦ — —351 ¦ ¦ ¦ ¦ — —451 ¦ ¦ ¦ ¦ — —551 ¦ ¦ ¦ ¦ — —? Temperature sensors in the winding for temperature monitoring? Different terminal box positions and cable outlets? With external ventilation for low speeds at high torque? Integrated or suppplied frequency converters? Drives in compliance with CSA or NEMAOf course, it is also possible to connect drives adapted specifically to your appli-cation.These are, for example:? DC brush motors? EC DC drives? Gear motors, adjustable or with fixed speed? Air motorsPump 63 71 80 90 100 11251 ¦ ¦76 ¦ ¦101 ¦ ¦151 ¦ ¦251 ¦ ¦ ¦ ¦351 ¦ ¦ ¦451 ¦ ¦ ¦551 ¦ ¦ ¦The gear pumps have been designed in such a manner that almost all versions comply with the standard ATEX 94/9/EC and can be used in potentially explosive areas.Additional equipment may be necessary, depending on the pump size and the operating conditions. The adjacent overview shows the possible areas of application.1617onto existing drive or intermediate shafts.No rotary shaft seals are usually required due to the high degree of integration in customer systems.This type of gear pumps can also be designed very simply with rotational direction switchover for applications in which the direction of rotation of the drive shaft may change. The pumping direction is not changed even if the direction of rotation is changed.Possible applications:Application cases are, for example, the lubrication of combustion engines, compressors, blowers, compactors or stationary or mobile transmissions.Operational areas & possible applicationsGerotor Gear PumpsStructural designIn addition to the external gear pump described above, Scherzinger also supplies internal gear pumps.Gear pumps of this design are usually used as highly integrated units for oil lubrication in large-scale series. The cost benefit is achieved by using sintered displacers in combination with simple pump casing machining processes. Gerotor pumps are often designed as independent pumps without shafts of their own which are slipped Application limitsCustomer-specific applications?p: max. 30 barFlow rate: max. 200 rpmInlet pressure: -0.7 to 100 barSuction head: max. 7 mTemperature range -40 ° to 160 °CViscosity range: -0.5 to 50,000 mPasThese units usually have their own oil sump from which the pump conveys oil to the lubrication points via a filter.The long sealing sections within the pump enable the implementation of very high suction heads and high differential pressures of up to approx.120 bar.Since no compensation elements are required even at high pressures, the overall efficiency of this pump type is excellent.StructuraldesignOperational areas & possible applicationsInternal Gear PumpsIn addition to external gear pumps and gerotor pumps, Scherzinger also supplies internal gear pumps, also known as crescent pumps.A particular advantage is the high degree of pumping uniformity with very low pulsation, resulting in very smooth running.Possible applicationsApplication cases are, for example, pre-feeding of die-sel fuel to heating systems, fuel injection in heating systems and also hydrau-lic applications, such as door opening and closing systems.Application limitsCustomer-specific applications?p: max. 100 barFlow rate: max. 1.5 rpmInlet pressure: -0.7 to 100 barSuction head: max. 9 mTemperature range: -40 ° to 200 °CViscosity range: -0.5 to 2,000 mPas1819As a partner in concepts for application-specific gear pumps and pumping systems, Scherzinger provides you with comprehensive support for the fulfillment of your technical and logistic needs, from consultation up to the delivery of spare parts. Our global sales network enables us to respond with individual and flexible solu-tions to meet your requirements – reliably in good time.You benefit from¦ Individual pump training courses tailored to your knowlege requirements.¦ Uncomplicated and expert application consultation worldwide¦ Our wealth of experience in processing import, export and customs clearance procedures¦ Short-term replacement deliveries within a few workdays¦ Professional repairs – your gear pump is returned to you in mint conditionOur wealth of experience and expertise in chemistry and process engineering enables us to give you advice tailored to your requirements.An expert, highly efficient support and development team provides you with sup-port already in the conception phase of your system.Based on your specifications, we then design a gear pump solution which provides you with an optimum level of reliability and safety for your application.ApplicationconsultationServiceDo you also require maxi-mum operational reliability for your application?We recognized this require-ment at an early stage and have been specializing on customized developments for over 75 years. We place a great emphasis on consis-tent quality orientation over the entire process chain. Take the opportunity to engage in close cooperation with our product managers. This will provide you with prompt high-quality solutions tailored specifically to your application case – reliably and precisely.Tailor-made gearpump solutionsYou will benefit from:¦ A highly efficient and expert development team¦ The application of modern 3D CAD- CAM- workplaces¦ Quick and uncomplicated data exchange for all conventional CAD- Systeme¦ Our core competence of processing completely different materials¦ FMEA-analysis tools for preventive fault identification¦ Quick application- specific adaption of series solutions by our development and prototype design depart- ment¦ Diverse synergies from experiences gained in large-scale series production and customized productions The optimum, perfect qua-lity of our products is very important to us. "Heart of Hightech" stands for reliabi-lity – which we can guaran-tee by means of detailed testing phases. Not only are new developments subjected to endurance tests under realistic ope-rational conditions, each individual product is also tested for full functionality.Our modern test field allows tests to be conducted according to your require-ments:¦ Several individual pump test stations¦ Endurance test benches¦ Climatic chambers for thermal test¦ Noise and pulsation measurementsInspectionand testingThis offers important advan-tages in order to guide you to your goal in an easier and quicker way.¦ Precise and quick tender preparation by means of sophisticated software and an extensive media database¦ Tested pump concepts provide the basis for your optimum material combination.¦ Extensive product documentation already during the tender preparation procedurePumpenfabrik Ernst Scherzinger GmbH & Co. KGBregstraße 23-2578120 Furtwangen | GermanyTelefon +49 7723 6506-0Fax +49 7723 6506-40info@scherzinger.dewww.scherzinger.dew w w . s c h e r z i n g e r . d e13-0289 | 06-2013 | 400 E | We reserve the right to make changes.Plant and Process EngineeringAutomotive and RacingChemical and PetrochemicalBuilding TechnologyPower GenerationMechanical EngineeringMechanical EngineeringCommercial Vehicles and Municipal TechnologyEnvironmental TechnologyPulp and Paper