Inventflow: Grundfos A-partner

Grundfos NK 125-250/253 A2F2AE-SBQQE

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https://inventflow.nl/en/pompenfilter/nk/grundfos-nk-125-250-253-a2f2ae-sbqqe

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Datasheet

Printed from Grundfos Product Centre [2021.12.002]

Qty. Description1 NK 125-250/253 A2F2AE-SBQQE

Note! Product picture may differ from actual product

Product No.: 98972428

Non-self priming, single-stage centrifugalFlange standard: pump according to EN 1092-2.

The pump is for the pumping of thin, clean orslightly contaminatedliquids without abrasive or long-fibredsolids.

Phase: Pump and 3-phase AC motor are mountedas separate units on a common baseplate and

The impeller is hydraulically as well asdynamically balanced.

The pump has the following characteristics:- flange dimensions according to

EN 1092-2,Pump housing: - Cast iron volute pump housing,

- stainless steel shaftImpeller: and Cast iron impeller and bronze wear rings,

- unbalanced mechanical shaft seal according to EN 12756.

Controls:Frequency converter: NONEPressure sensor: N

Liquid:Pumped liquid: WaterLiquid temperature range: -25 .. 120 °CSelected liquid temperature: 20 °CDensity: 998.2 kg/m³

Technical:Pump speed on which pump data are based: 970 rpmRated flow: 183 m³/hPump with motor: YRated head: 8 mActual impeller diameter: 253 mmNominal impeller diameter: 250Code for shaft seal: BQQECurve tolerance: ISO9906:2012 3B2Bearing design: Standard

Materials:Pump housing: Cast iron

EN-GJL-250ASTM class 35

Wear ring: BrassImpeller: Cast iron

EN-GJL-200

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Printed from Grundfos Product Centre [2021.12.002]

Qty. DescriptionASTM class 30

Shaft: Stainless steelEN 1.4301AISI 304

Internal pump house coating: CED

Installation:Maximum ambient temperature: 55 °CMaximum operating pressure: 16 barPipe connection standard: EN 1092-2Type of inlet connection: DINType of outlet connection: DINSize of inlet connection: DN 150Size of outlet connection: DN 125Pressure rating for connection: PN 16Coupling type: Flexible w/spacerBase frame design: EN/ISOGrouting: N

Electrical data:Motor type: SIEMENSIE Efficiency class: IE3Rated power - P2: 5.5 kWMains frequency: 50 HzRated voltage: 3 x 380-420D/660-725Y VRated current: 12,2-11,0/7,00-6,40 AStarting current: 660-660 %Cos phi - power factor: 0.78Rated speed: 970 rpmEfficiency: IE3 88,0%Motor efficiency at full load: 88.0-88.0 %Motor efficiency at 3/4 load: 89.1-89.1 %Motor efficiency at 1/2 load: 89.0-89.0 %Number of poles: 6Enclosure class (IEC 34-5): IP55Insulation class (IEC 85): FMotor No: 98957457

Others:Minimum efficiency index, MEI ≥: 0.68Net weight: 300 kgGross weight: 327 kgShipping volume: 0.841 m³Country of origin: HUCustom tariff no.: 84137059

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Printed from Grundfos Product Centre [2021.12.002]

98972428 NK 125-250/253 A2F2AE-SBQQE 50 HzH

[m]

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NK 125-250/253, 3*400 V, 50Hz

253 mm

Pumped liquid = WaterLiquid temperature during operation = 20 °CDensity = 998.2 kg/m³

P[kW]

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Printed from Grundfos Product Centre [2021.12.002]

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Q [m³/h]0 50 100 150 200

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NK 125-250/253, 3*400 V, 50Hz

253 mm

Pumped liquid = WaterLiquid temperature during operation = 20 °CDensity = 998.2 kg/m³

P[kW]

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3

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5

NPSH[m]

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Description ValueGeneral information:Product name: NK 125-250/253

A2F2AE-SBQQEProduct No: 98972428EAN number: 5712604485095Technical:Pump speed on which pump data arebased:

970 rpm

Rated flow: 183 m³/hPump with motor: YRated head: 8 mActual impeller diameter: 253 mmNominal impeller diameter: 250Shaft diameter: 32 mmCode for shaft seal: BQQECurve tolerance: ISO9906:2012 3B2Pump version: A2Bearing design: StandardMaterials:Pump housing: Cast ironPump housing: EN-GJL-250Pump housing: ASTM class 35Wear ring: BrassImpeller: Cast ironImpeller: EN-GJL-200Impeller: ASTM class 30Shaft: Stainless steelShaft: EN 1.4301Shaft: AISI 304Internal pump house coating: CEDMaterial code: ACode for rubber: EInstallation:Maximum ambient temperature: 55 °CMaximum operating pressure: 16 barPipe connection standard: EN 1092-2Type of inlet connection: DINType of outlet connection: DINSize of inlet connection: DN 150Size of outlet connection: DN 125Pressure rating for connection: PN 16Coupling type: Flexible w/spacerBase frame design: EN/ISOGrouting: NConnect code: FLiquid:Pumped liquid: WaterLiquid temperature range: -25 .. 120 °CSelected liquid temperature: 20 °CDensity: 998.2 kg/m³Electrical data:Motor type: SIEMENSIE Efficiency class: IE3Rated power - P2: 5.5 kWMains frequency: 50 HzRated voltage: 3 x 380-420D/660-725Y VRated current: 12,2-11,0/7,00-6,40 AStarting current: 660-660 %Cos phi - power factor: 0.78Rated speed: 970 rpmEfficiency: IE3 88,0%Motor efficiency at full load: 88.0-88.0 %Motor efficiency at 3/4 load: 89.1-89.1 %Motor efficiency at 1/2 load: 89.0-89.0 %

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Printed from Grundfos Product Centre [2021.12.002]

Description ValueNumber of poles: 6Enclosure class (IEC 34-5): IP55Insulation class (IEC 85): FMotor protec: PTCMotor No: 98957457Controls:Frequency converter: NONEPressure sensor: NOthers:Minimum efficiency index, MEI ≥: 0.68Net weight: 300 kgGross weight: 327 kgShipping volume: 0.841 m³Country of origin: HUCustom tariff no.: 84137059

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Printed from Grundfos Product Centre [2021.12.002]

98972428 NK 125-250/253 A2F2AE-SBQQE 50 Hz

Note! All units are in [mm] unless others are stated.Disclaimer: This simplified dimensional drawing does not show all details.

480

1400

940

560552

350

1256

610

150140

140

125

355

100

230

230

90

23x

19x

28x

4

8

8

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Printed from Grundfos Product Centre [2021.12.002]

Spare parts NK 125-250/253, Product No. 98972428Produced After 1703 (production year and week number)

Pos Omschrijving Opmerking tekst Classificatie Gegevens Onderdeelnr. Aantal Eenheid- Kit, bearing 96579599 1 pcs

111 Ball bearing 96607904 153 Ball bearing 96607904 153.a O-ring Diameter: 89,5 1

Material type: EPDMThickness: 3

109 O-ring Diameter: 89,5 1Material type: EPDMThickness: 3

156a Bearing cover 2159f Retaining ring 2159a V-ring 2

- Kit, bearing bracket 95131794 1 pcs7.k Hex socket head cap screw Length (mm): 10 4

Thread: M636.a Nut Thread: M10 676a Rivet 286 Bearing bracket 1124d Shaft guard 1124d Shaft guard 1124.d Pan head screw 4

- Kit, coupling 96579800 1 pcs- 8 Coupling cpl. 1

89s Spacer ring 189r Spacer sleeve 189o Coupling part spacer side 189.p Coupling female 189.d Hex socket head cap screw Length (mm): 16 6

Thread: M689.b Socket set screw Length (mm): 8 1

Thread: M689 Rubber blocks for coupling 611.a Parallel key 1

- Kit, coupling guard 97945075 1 pcs7b Hex socket head cap screw Length (mm): 10 4

Thread: M67b Retainer for coupling guard 1

- 7 Coupling guard cpl. 17e Hex socket head cap screw 37c Spacer f/coupling guard 194 Lock nut Thread: M6 2

- Kit, cover 95131791 1 pcs18 Plug 136 Nut Thread: M12 1036 Nut Thread: M10 877 Cover f/mech. seal 1

- Kit, foot for bearing bracket 96909488 1 pcs Nut Thread: M12 2

66 Washer 290.e Hex head screw Length (mm): 25 1

Thread: M1290.d Hex head bolt Length (mm): 100 2

Thread: M1290.d Hex head screw Length (mm): 60 2

Thread: M1290.d Hex head screw Length (mm): 35MM 2

Thread: M1290.d Hex head screw Length (mm): 30 2

Thread: M12

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Printed from Grundfos Product Centre [2021.12.002]

Pos Omschrijving Opmerking tekst Classificatie Gegevens Onderdeelnr. Aantal Eenheid90.c Foot 1

- Kit, foot for coupling guard 96848500 1 pcs7h Hex head screw Length (mm): 16 2

Thread: M8- 7.d Foot cpl. 1

7l Support f/coupling guard foot 17h Hex socket head cap screw 27d Foot for coupling guard 166 Washer 266 Washer 2

- Kit, nut 96939130 1 pcs11 Parallel key 1

- 36 Nut 166a Spring lock washer 166 Washer 167 Nut Thread: M18 1

- Kit, pump housing 96930827 1 pcs- 6 Pump housing 1

26 Staybolt Length (mm): 40 10Thread: M12

45 Wear ring 120 Plug 236 Nut Thread: M12 10

- Kit, rubber blocks f. coupling 96480016 1 pcs89 Rubber blocks for coupling 6

- Kit, shaft 96039655 1 pcs11.a Parallel key 111 Parallel key 151 Shaft 166a Spring lock washer 166 Washer 167 Nut Thread: M18 1

- Kit, shaft cover 96809957 1 pcs124d Shaft guard 1124d Shaft guard 1124.d Pan head screw 4

- Spare, wear ring 96810109 1 pcs45 Wear ring 1

- V-ring 96871238 1 pcs159a V-ring 2

Motor 1 pcs7k Hex socket head cap screw Length (mm): 10 97506946 4 pcs

Thread: M628 Hex head screw Length (mm): 25 99522923 1 pcs

Thread: M1236 Nut Thread: M12 96620479 10 pcs36 Nut Thread: M10 96620484 8 pcs49 Impeller 99621950 1 pcs54 Ball bearing 98638919 2 pcs67 Nut Thread: M18 92526535 1 pcs72.a O-ring Diameter: 278,99 92547634 1 pcs

Material type: EPDMThickness: 3,53

72.a O-ring Diameter: 278,99 92526510 1 pcsMaterial type: EPDMThickness: 3,53

72.a O-ring Diameter: 278,99 97511839 1 pcsMaterial type: EPDMThickness: 3,53

72.a O-ring Diameter: 278,99 97757673 1 pcsMaterial type: EPDMThickness: 3,53

77a Pan head screw 99266550 4 pcs105b Spacer 96591277 1 pcs

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Printed from Grundfos Product Centre [2021.12.002]

Pos Omschrijving Opmerking tekst Classificatie Gegevens Onderdeelnr. Aantal Eenheid109 O-ring Diameter: 89,5 97511809 2 pcs

Material type: EPDMThickness: 3

156a Bearing cover 97506937 2 pcs

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