SPX Cooling Technologies TG MAG86-100, TG MAG185-125, TG MAG15-50 Maximum temperature of internals

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3.10.2 Maximum temperature of internals

For some material combinations the general temperature performances must be limited. The maximum allowable working temperature of internals depends on the combination of materials used and their thermal expansions and the interference fit to hold the bearing bush fixed.

•Some bush bearings have an extra locking screw. In this case the maximum allowable tempera- ture is based on the most probable interference fit.

•In case the bearing bush has no locking screw because material and construction do not allow concentrated stress the maximum allowable temperature is based on the minimum inter- ference fit.

Maximum temperature (°C) of idler bush bearing material and idler material combinations

TG MAG pump

 

 

 

 

 

 

Bush and Idler materials (°C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cast iron idler G

 

 

Steel idler S

 

Stainless steel idler R

size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SG*)

 

CG

BG

 

HG

SS*)

CS

BS

HS

US

BR

CR

HR

UR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15-50

300

 

280

240

 

240

300

250

300

200

240

300

250

200

240

23-65

300

 

300

250

 

240

300

280

300

200

240

300

280

200

240

58-80

300

 

300

250

 

240

300

280

300

200

240

300

280

200

240

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

86-100

300

 

300

250

 

280

300

280

300

240

240

300

280

240

240

185-125

300

 

300

250

 

300

300

280

300

260

240

300

280

260

240

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*) Remark: Hardness diminishment of steel bush (S) and hardened steel pin (2) above 260°C

The maximum allowable temperature of the rotor shaft bearing assembly is 280°C.

3.10.3 Operation under hydrodynamic lubrication conditions

Hydrodynamic lubrication could be important criteria for bush material selection.

If the bush bearings are running under the condition of hydrodynamic lubrication there is no more material contact between bush and pin or shaft and the lifetime cycle is increased significantly.

If there is no condition for hydrodynamic lubrication, the bush bearings make material contact with pin or shaft and the wear of these parts is to be considered.

The condition of hydrodynamic lubrication is fulfilled with the following equation:

Viscosity * shaft speed / diff.pressure ≥ K.hyd with: viscosity [mPa.s]

shaft speed [rpm] diff.pressure [bar]

K.hyd = design constant for each pump size.

TG MAG pump size

K.hyd

 

 

15-50

6250

23-65

4000

 

 

58-80

3750

86-100

3600

 

 

185-125

2500

3.10.4 Maximum torque of pump shaft and rotor material combination

The maximum torque is limited by the maxium transmittable torque of the magnetic coupling. This means the magnetic coupling will slip through before the rotor shaft or pump shaft reach their mechanical limitations.

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

SPX Cooling Technologies has established itself as a leader in the design and manufacturing of cooling systems, offering a wide range of products tailored to meet specific industrial and commercial needs. Among its impressive lineup, the TG MAG series stands out, featuring models such as TG MAG185-125, TG MAG23-65, TG MAG86-100, TG MAG58-80, and TG MAG15-50. Each of these models combines innovative technology with robust performance characteristics, making them ideal choices for various applications.

The TG MAG185-125 model is designed for high-capacity cooling requirements, offering exceptional thermal performance while maintaining energy efficiency. Its advanced fan design minimizes noise levels, making it suitable for installations in noise-sensitive areas. Furthermore, the unit benefits from a corrosion-resistant construction, ensuring longevity and reliable operation in diverse environments.

For smaller applications, the TG MAG23-65 provides a compact solution without compromising on performance. This unit features a space-efficient design and utilizes high-efficiency fans that optimize airflow, thereby enhancing overall cooling efficiency. The integrated digital controls allow for precise temperature management, making it easy for operators to monitor and adjust settings as needed.

The TG MAG86-100 model serves as an ideal middle-ground solution, balancing capacity and efficiency. It incorporates state-of-the-art technology, such as variable speed drives, which adjust the fan speed based on cooling demand, resulting in significant energy savings. The design also promotes easy maintenance, with accessible components that facilitate regular servicing and inspections.

For medium-scale needs, the TG MAG58-80 combines durability with performance, featuring a robust frame that can withstand harsh operational conditions. Its efficient heat exchange technology maximizes cooling output while minimizing energy consumption. Moreover, the enhanced airflow system ensures uniform cooling across the entire unit.

Lastly, the TG MAG15-50 is perfect for smaller spaces where cooling requirements are less demanding. Despite its size, this model is equipped with cutting-edge features such as a compact structure and highly efficient cooling mechanisms to ensure effective performance. The easy installation process and low maintenance needs further enhance its appeal.

Overall, the TG MAG series provides a range of innovative cooling solutions tailored to meet diverse industrial requirements, characterized by efficiency, durability, and advanced technology, ensuring optimal performance across all operating conditions.
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