NCB/NCBK Series

End-suction pumps with dimensions according to EN733, suitable for re-circulation, heating and heat recovery systems, water supply facilities, pressurisation groups. NCB: bareshaft pump and NCBZ: electric pump set on base, complete with electric motor coupled through a coupling. Pumps and motors in conformity with 2009/125/CE Directive (ErP) as indicated in the data tables.

Designing a pump which combines performance, reliability, durability and cost is a complex engineering challenge. SAER designs and manufactures pumps and motors since 1951 and since the 1990s the acquired extensive experience of our engineers is accompanied by integrated simulation systems.

NCB Series Advantages

  • “Back pull-out” design: the rotating part of the pump can be removed without having to remove the pump body from the plant pipes.
  • Energy saving: high-efficiency hydraulic design optimized with CFD systems that meet the ErP Directive (Energy related Products)
  • Suction profile conceived to increase the suction capacity and to reduce the NPSH and the possibility of cavitation.
  • “Heavy duty” construction: shaft made of stainless steel AISI 431 or Duplex as standard, oversized ball bearings and protected from outer agents to offer a reduced working noise and a long service life. Available versions with oil bath bearings and with a constant-level oiler upon request.
  • Large selection of seal systems and of materials for the parts in contact with the liquid: cast iron, marine bronze, stainless steel and Superduplex versions obtained by casting.

NCBZ Series Advantages

  • Wide range: more than 800 models available in 2 and 4 poles, power ratings from 0,37 kW to 90 kW, outlet from DN32 to DN150 and available in different configurations, materials and motors.
  • Motors with IE3 and IE4 efficiency classes, ErP Directive compliant, oversized and suitable for use with frequency converter (inverter) as standard up to 55kW included. Upon request, version with frequency converter (inverter) integrated into motors up to 18,5 kW.
  • Overload-holding pin elastic couplings as standard, suitable also to compensate small shaft misalignment. Spacer coupling as option. Other types of couplings available on request.
  • Baseplate designed with integrated simulations systems: structural analysis (FEA) and modal analysis to ensure robustness and safety, for weight optimization and lower vibrations.

Performance Data

  • 2 and 4 poles versions with power from 0,37kW up to 90 kW.
  • Performances at ~3000 rpm.
    • Max Flow: 400 m3/h.
    • Max head: 129m.
  • Performances at ~1500 rpm.
    • Max Flow: 675 m3/h.
    • Max head: 65,5m
  • Clockwise rotation, viewed facing the motor.

Pump Construction Features

Standard version Pump according to Directive 2009/125 / EC (ErP) - Regulation (EU) No 547/2012 - Models with MEI>0,4.

  • Pump body: cast iron EN-GJL-250 with dimensions according to EN733 standards. (for the sizes covered).
  • Impeller: closed multi-vane. Cast iron EN-GJL-250 or equivalent.
  • Shaft: stainless steel AISI431 (1.4057) or Duplex (1.4362)
  • Bidirectional mechanical seal.
  • Joints in aramidic fiber.
  • Normalized flanges UNI EN 1092-2.
  • Counterflanges upon request.

Motors

  • In conformity with Directive 2009/125 / EC (ErP) - Regulation (EU) No 2019/1781.
  • Asynchronous induction, 2 and 4 poles, with external ventilation (TEFC).
  • Protection: IP55.
  • Insulation: class F.
  • Standard voltages: ≤4kW 230/400(D/Y); ≥5,5kW 400/690(D/Y)
  • Efficiency classes according to IEC 60034-30: IE3 and IE4.

Painting

  • Bicomponent epoxy coating suitable for contact with drinking water.
  • Corrosion resistance corresponding to C3 Medium cycle according to EN12944-6 (C5 Medimum cycle upon request).

Special Versions

  • Version with frequency changer on the motor up to 18,5 kW.
  • Version with monophase motor up to 4kW.
  • Versions made of different materials:
    • NCBX: Stainless steel AISI316 version
    • NCB-M: Marine bronze version
    • NCBXD: Superduplex Stainless steel version
  • ACS certified version
  • Version with oil bath bearings
  • Version with stainless steel pump support

Tolerances

  • Pump UNI EN ISO 9906: 2012 grade 3B (other grades on request).
  • Motor: IEC 60034-1.

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Make and Enquiry

For more information on this product please call us on NSW (02) 4271 2999 or QLD (07) 4952 3612 or fill out the form below and we will get back to you.