SPX Cooling Technologies TG MAG15-50 Drives, Stability, Starting torque, Radial load on shaft end

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3.18.2.5Stability

Foundation

The pump unit must be installed on a base plate or on a frame placed exactly level on the founda- tion. The foundation must be hard, level, flat and vibration free to guarantee correct alignment of the pump/drive while operating. See also section 3.18.7 Guidelines for assembly and section 3.18.7.6 Shaft coupling.

Horizontal mounting

Pumps are to be mounted horizontally on the integral feet. Other kinds of installation have an influence on draining and filling, etc. If the pump/pump unit is installed differently, contact your distributor.

Support

The support under the bearing bracket is designed to absorb belt forces and vibrations while letting the pump shaft expand freely along its axis.

3.18.3 Drives

If a bare shaft pump is supplied, the user is responsible for the drive and the assembling with the pump. The user also must provide guarding of moving parts. See also section 3.18.7 Guidelines for assembly.

3.18.3.1Starting torque

•The starting torque of internal gear pumps is almost identical to the nominal torque.

•Take care that the motor has a sufficiently large starting torque. Therefore choose a motor with a capacity 25% higher than the pump power consumption.

Note! A mechanical variable speed drive requires checking of the available torque at low and high speed.

•Frequency invertors may have limited the starting torques.

•The selection of the size and performance of the magnetic coupling depends on the output torque of the drive motor during start-up. Please verify that the maximum allowable torque of the magnetic coupling is not exceeded.

3.18.3.2Radial load on shaft end

The shaft end of the pump shaft may be loaded in radial sense with the maximum radial force (Fr). See table.

TG MAG pump size

Fr_max [N]

 

 

15-50

1000

 

23-65

 

 

 

58-80

1800

 

86-100

 

 

 

185-125

2500

 

 

•This force is calculated for the maxium allowable torque at the shaft end and for a bearing life of

25.000 hours.

•In case a direct drive with a flexible coupling is used, the indicated force will not be exceeded when pump and drive are well aligned.

•Starting with the TG MAG 15-50, V-belt drive can be used.

In case of V-belt drive

The maximum allowable radial force Fr as indicated in the table may be chosen higher but must be calculated case by case in function of pressure, torque and size of the pulley. Consult your distributor for advice.

A.0500.551 – IM-TGMAG/02.00 EN (02/2008)

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Contents TopGear MAG EC-Declaration of conformity Contents Cleaning the pump Rotor bearing assemblyInstallation Guidelines for assembly20.1.2 Instructions for re-using and disposal 20.1.1Maintenance instructions Clearance adjustment Designation of threaded connectionsPump cover and without jackets on intermediate cover TOC Hydraulic part Bearing bracket Jacket optionsPump cover and intermediate cover SS Pump cover and intermediate cover TTHandling GeneralReception, handling and storage ReceptionGeneral SafetyPump units InstallationPump unit handling Before commissioning the pump unit Disassembly/assembly of the coupling guardName plate CE Declaration of Conformity Maximum pressure at discharge flange design pressure = bar Quantity Symbol UnitTechnical conventions Differential pressure = barJacket options for pump cover 0 Pump cover without jackets Type designationExample Pump family code TG = TopGear Pump range nameRotor and shaft materials Idler bush and idler materialsIdler pin materials Bushes on shaft materialsOperating principle Pump standard partsSelf-priming operation Safety relief valve Working principleSound General performanceSound level of a pump without drive Main characteristicsPressure Sound levelSound level of the pump unit Influences Maximum and minimum allowable temperatureJacket options InternalsHyd = design constant for each pump size Maximum temperature of internalsOperation under hydrodynamic lubrication conditions Maximum torque of pump shaft and rotor material combinationInner parts Mass moment of inertiaAxial and radial clearances Extra clearancesMaximum size of solid particles Play between gear teethDiametral clearance on pin / idler bearing Magnetic coupling Components of the magnetic driveBelow Rotor bearing assemblyMaximum allowable temperature and nominal torque Samarium Cobalt SmCo 280C Neodymium Iron Boron NdFeB 120 CMaterial circulation pump parts Materials rotor bearing assemblyCirculation pump Sealing rings and gasketsWorking pressure class Safety relief valveSafety relief valve heated spring casing MaterialsHeating Definition and working principleMaterials PressureSpring ratio Safety relief valve Safety relief valve Relative adjustmentSectional drawings and part lists Single safety relief valveHeated spring casing InstallationLocation AccessibilityOutdoor installation Indoor installationRadial load on shaft end DrivesStability Starting torqueForces and moments Check after connecting whether the shaft can move freelyShaft rotation Suction and discharge pipesSelf-priming operation PipingIsolating valves Suction pipingHeating jackets Secondary pipingStrainer Drain linesJacket on pump cover Guidelines for assemblyTransport of pump unit Foundation pump unitShaft coupling Combustion enginesBelt drive Check temperature censor on canGuarding of moving parts Alignment tolerancesVenting and filling Cleaning the pumpCleaning suction line Instructions for start-upStart-up Checklist Initial start-upAbnormal operation Shut-downTrouble shooting Tion Instructions for re-using and disposal Maintenance instructionsPreparation Shut-down Motor safetyExternal cleaning ToolsPlastic or rubber components Specific componentsFluid circuits Nuts and boltsFront pull-out Clearance adjustmentBack pull-out 0600 8120 8110 8100 4000 0701 0040 0010 Threaded connection Rp example Rp 1/2 Designation of threaded connectionsThreaded connection G example G 1/2 Disassembly of front-pull-out assembly DisassemblyRemoval of bearing bracket Disassembly of top cover 0100 or safety relief valveDisassembly of bearing bracket Take off top cover 0100 or safety relief valveDisassembly of outer magnetic rotor Disassembly of pump shaft completeRemoval of ball bearings Take out O-rings 8130 Disassembly of separation canDisassembly of back-pull-out assembly Un-tighten cap head screws 8460 and remove them8310 8520 8510 8500 8350-D 8400 0701 Assembly of bearing bracket AssemblyTake care not to damage the outer rotor magnet Mount axial bearing 8350-A into the insert Pre-assembly of the back-pull-outAdjustment of the axial clearance Circulation pumpAssembly of rotor shaft Axial clearance Assembly of the separation can Assembly of the back-pull-out assembly to the pump casingMeasure the distances as indicated on the sketch Assembly of the bearing bracketAssembly of the front-pull-out assembly Mount bearing bracket support 1700 to the bearing bracketOn the pump cover 4000 with tap bolts Assembly of top cover 0100 or safety relief valveTighten tap bolts 1010 crosswise with Specified torque TG MAG15-50 to How to order sparesTG MAG185-125 Bearing bracket Hydraulic partJackets on pump cover Jacket optionsJackets on intermediate cover 0220 0200 0310 0250 0240 0300 0320 0230 0210 TG MAG15-50 to 185-125 pumps Dimensional drawingsCast iron Flange connectionsStainless steel Jackets Jackets dimensions Safety relief valvesSingle safety relief valve Dv dk Heated safety relief valveBracket support Weights MassCopyright 2008 SPX Corporate

TG MAG86-100, TG MAG23-65, TG MAG58-80, TG MAG15-50, TG MAG185-125 specifications

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