EN 12157:1999

Rotodynamic pumps - Coolant pumps units for machine tools - Nominal flow rate, dimensions

This European Standard specifies the dimensional requirements for the installation of machine tool electrical motor driven coolant pump units of the sump and suction type. This standard is applicable to coolant pump units having nominal capacities in the range 20 litres/min to 250 litres/min. This standard does not apply to coolant pump units of positive displacement pump design.

Kreiselpumpen - Kühlmittelpumpenaggregate für Werkzeugmaschinen - Nennförderstrom, Maße

Diese Europäische Norm legt die Maßanforderungen für den Einbau von elektrisch motorgetriebenen Kühlmittelpumpenaggregaten der Bauarten Tauch- und Saugpumpen mit vertikaler Welle in Werkzeugmaschinen fest. Diese Norm gilt für Kühlmittelpumpenaggregate mit einem Nennförderstrom im Bereich 20 Liter/min bis 250 Liter/min. Diese Norm gilt nicht fu(r Ku(hlmittelpumpenaggregate in Verdra(ngerpumpen- bauart.

Pompes rotodynamiques - Groupes motopompes à réfrigérant pour machines-outils - Débit nominal, dimensions

La présente norme européenne spécifie les exigences dimensionnelles pour l'installation de groupes motopompes pour le refroidissement des machines-outils entraînés par moteur électrique, de type pompe plongeante et de type pompe auto-amorçante. La présente norme s'applique aux groupes motopompes de refroidissement ayant un débit nominal compris entre 20 l/min et 250 l/min. La présente norme ne s'applique pas aux groupes motopompes pour le refroidissement de conception telle que les pompes volumétriques.

Rotodynamic pumps - Coolant pumps units for machine tools - Nominal flow rate, dimensions

General Information

• Status: Published
• Publication Date: 18-May-1999
• ICS: 23.080 - Pumps
• Technical Committee: CEN/TC 197 - Pumps
• Drafting Committee: CEN/TC 197 - Pumps
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 20-May-2022
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN 12157:2000 - Rotodynamic pumps - Coolant pumps units for machine tools - Nominal flow rate, dimensions

Overview

EN 12157:1999 is a CEN (European Committee for Standardization) standard that defines the dimensional requirements and nominal flow rates for rotodynamic coolant pump units used on machine tools. It covers electrical motor driven, sump and suction type coolant pump units with nominal capacities from 20 litres/min to 250 litres/min. The standard applies to pump units used for machine tool coolant systems and excludes positive displacement pump designs.

Key Topics

• Scope and applicability
  • Dimensional and installation requirements for rotodynamic coolant pump units for machine tools.
  • Applies to units with nominal flow rates between 20 L/min and 250 L/min.
  • Excludes positive displacement pumps.
• Installation dimensions
  • Standardizes mounting and connection dimensions to facilitate consistent installation and interchangeability of pump units on machine tools.
• Pump types covered
  • Focused on rotodynamic (centrifugal) pumps, specifically sump and suction configurations driven by electric motors.
• Designation and naming
  • Defines reference to nominal flow rate and basic identification elements for machine tool coolant pump units.
• Compatibility and replacement
  • Aims to make replacement and retrofit easier by harmonizing external dimensions and interfaces.

Applications

EN 12157:1999 is practical for:

• Machine tool builders specifying coolant systems for CNC machines, lathes, milling machines, and other metalworking equipment.
• Pump and motor manufacturers designing rotodynamic coolant pump units intended for the machine tool market.
• Maintenance and service engineers who need to select or replace coolant pumps with compatible mounting and connection dimensions.
• OEMs and integrators aiming for modular, interchangeable coolant pump units across product lines.
• Procurement and standards compliance teams ensuring purchased pumps meet recognized European dimensional requirements.

Benefits include:

• Simplified installation and reduced downtime due to standardized mounting and interfaces.
• Easier sourcing of replacement units and aftermarket parts.
• Improved interoperability between machine tools and pump suppliers.

Related Standards

• EN 12157:1999 is part of the family of European pump and machine tool standards. For full system compliance, users typically consider additional standards on pump performance testing, safety, pressure-containing parts, and machine tool coolant system design (refer to CEN/ISO catalogs or national mirror committees for specific references).

Keywords: EN 12157:1999, rotodynamic pumps, coolant pump units, machine tools, nominal flow rate, dimensions, sump and suction type, pump installation, CEN.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Rotodynamic pumps - Coolant pumps units for machine tools - Nominal flow rate, dimensionsKreiselpumpen - Kühlmittelpumpenaggregate für Werkzeugmaschinen - Nennförderstrom, MaßePompes rotodynamiques - Groupes motopompes a réfrigérant pour machines-outils - Débit nominal, dimensionsRotodynami
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