EN 50632-2-4:2016

Electric motor-operated tools - Dust measurement procedure - Part 2-4: Particular requirements for sanders other than disk type

1.1 General This European Standard specifies general requirements for the dust measurement of electric motor-operated tools supplied from mains or from batteries. This standard applies to those tools with and without dust extraction unit where dust such as mineral dust containing silica or wood dust is expected. 1.2 Types of dust Dust is a disperse distribution of solid substances in gases, particularly air, resulting from mechanical processes. According to EN 481, two size categories are to be differentiated: the inhalable dust and the respirable dust fraction. Inhalable dust refers to the entire inhalable fraction of the dust through mouth and/or nose. Respirable dust relates to the fraction of the inhalable dust that can reach the pulmonary alveoli due to its small particle size. This part of EN 50632 applies to sanders with the exception of all types of rotating disc-type sanders, which are covered by EN 50632-2-3.

Motorbetriebene Elektrowerkzeuge - Staubmessverfahren - Teil 2-4: Besondere Anforderungen für Schleifer außer Tellerschleiferb

Outils électriques à moteur - Procédure de mesure de la poussière - Partie 2-4: Exigences particulières pour les ponceuses autres que du type à disque

L'article de la Partie 1 est applicable avec l'exception suivante: Addition: La présente partie de l’EN 50632 s’applique aux ponceuses, à l’exception de tous les types de ponceuses à disque rotatif, qui sont couverts par l’EN 50632-2-3.

Elektromotorna orodja - Postopek merjenja prahu - 2-4. del: Posebne zahteve za brusilnike, razen diskovnih brusilnikov

Ta evropski standard določa splošne zahteve za merjenje prahu elektromotornih orodij, ki se napajajo prek omrežja ali baterij. Ta standard se uporablja za orodja, pri katerih se pričakuje nabiranje prahu (na primer mineralnega prahu, ki vsebuje kremenico, ali lesnega prahu), ne glede na to, ali so opremljena z enoto za izločevanje prahu.

General Information

• Status: Published
• Publication Date: 21-Jul-2016
• ICS: 13.040.40 - Stationary source emissions
• ICS: 25.140.20 - Electric tools
• Technical Committee: CLC/TC 116 - Safety of hand-held motor-operated electric tools
• Drafting Committee: CLC/TC 116 - Safety of hand-held motor-operated electric tools
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 19-Nov-2025
• Completion Date: 02-Dec-2025
• Ref Project: SIST EN 50632-2-4:2016 - Electric motor-operated electric tools - Dust measurement procedure - Part 2-4: Particular requirements for sanders other than disk type

Relations

• Amended By: EN 50632-2-4:2016/A1:2021 - Electric motor-operated tools - Dust measurement procedure - Part 2-4: Particular requirements for sanders other than disk type
• Effective Date: 08-Sep-2020

EN 50632-2-4:2016 Overview

EN 50632-2-4:2016 is a European Standard developed by CLC that defines the dust measurement procedure for electric motor-operated sanders, excluding rotating disc-type sanders which are covered under EN 50632-2-3. This standard specifies particular requirements for the assessment of dust emissions from various sander types, critical for ensuring operator safety and compliance with occupational health regulations.

The standard applies to electric motor-operated sanding tools powered from mains or batteries, both with and without dust extraction units. It targets dust types including mineral dust containing silica and wood dust-common respirable hazards in sanding operations.

Key Topics in EN 50632-2-4:2016

• Scope and Application: Focus on non-disc-type sanders such as orbital, random orbit, reciprocating, and belt sanders. Addresses dust exposure from sanding mineral materials (gypsum) and wood.

• Dust Types and Categories: Differentiates between inhalable dust (able to enter mouth/nose) and respirable dust (fine particles reaching pulmonary alveoli), aligned with EN 481 definitions.

• Test Procedures:

  • Defined operating conditions for sanding gypsum blocks, wood, and wooden floors.
  • Testing under load conditions with specified sanding papers (P80 grain size).
  • Control of variables such as feed force, speed setting, and tool orientation.
  • Minimum required material removal to ensure representative dust sampling.

• Test Set-ups:

  • Use of gypsum blocks mounted on an inclined A-support for mineral dust testing.
  • Bench mounting for wood sanding tests with humidity controls.
  • Parquet floor test area and frames for floor sanding exposure assessment.

• Instrumentation and Reporting:

  • Dust collection via extraction units with weighing to determine dust quantity.
  • Detailed reporting on test parameters including material types, hardness, and dust concentration values-especially respirable dust for mineral materials.

Practical Applications

• Occupational Health Compliance: Employers and manufacturers utilize EN 50632-2-4 to evaluate sanding tools for airborne dust emissions that pose respiratory health risks, particularly in woodworking and construction industries.

• Product Testing and Certification: Tool manufacturers apply this standard when designing or certifying sanders to demonstrate compliance with European health and safety requirements on dust emissions.

• Safety Improvement: Helps in the development of effective dust extraction systems or operational practices to reduce worker exposure to hazardous dust.

• Risk Assessment: Enables safety professionals to assess and document dust emission levels for different sanding operations, guiding workplace controls and personal protective equipment (PPE) recommendations.

Related Standards

• EN 50632-1:2015: General requirements and procedures for dust measurement on electric motor-operated tools, serving as the base standard applicable alongside Part 2-4.

• EN 50632-2-3: Dust measurement requirements specific to rotating disc-type sanders, differentiating from the non-disc sanders covered in EN 50632-2-4.

• EN 481: Defines dust size fractions and terminology relevant to occupational exposure assessments (inhalable and respirable dust).

• EN 12859:2011: Specifications for gypsum blocks used as a standard test material for mineral dust measurement in sanding tests.

Summary

The EN 50632-2-4:2016 standard serves as a critical reference for measuring and controlling dust emissions from electric motor-operated non-disc sanding tools. By establishing clear test conditions, instrumentation, and reporting protocols, it aids manufacturers and safety specialists in evaluating tool safety, improving worker protection, and ensuring compliance with health regulations in Europe.

Keywords: EN 50632-2-4, dust measurement, electric motor-operated tools, non-disc sanders, sanding dust, respirable dust, inhalable dust, occupational safety, dust extraction, sanding testing, European Standard, CLC, gypsum block test, wood sanding.

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2016
Elektromotorna orodja - Postopek merjenja prahu - 2-4. del: Posebne zahteve za
brusilnike, razen diskovnih brusilnikov
Electric motor-operated electric tools - Dust measurement procedure - Part 2-4:
Particular requirements for sanders other than disk type
Outils électriques à moteur - Procédure de mesure de la poussière - Partie 2-4:
Exigences particulières pour les ponceuses autres que du type à disque
Ta slovenski standard je istoveten z: EN 50632-2-4:2016
ICS:
25.080.50 Brusilni in polirni stroji Grinding and polishing
machines
25.140.20 (OHNWULþQDRURGMD Electric tools
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50632-2-4

NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2016
ICS 13.040.40; 25.140.20
English Version
Electric motor-operated tools - Dust measurement procedure -
Part 2-4: Particular requirements for sanders other than disk type
Outils électriques à moteur - Procédure de mesure de la Motorbetriebene Elektrowerkzeuge - Staubmessverfahren -
poussière - Partie 2-4: Exigences particulières pour les Teil 2-4: Besondere Anforderungen für Schleifer außer
ponceuses autres que du type à disque Tellerschleiferb
This European Standard was approved by CENELEC on 2016-05-03. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50632-2-4:2016 E
Contents
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Test procedure . 4
5 Instrumentation . 7
6 Information to be reported . 7
Figures
Figure 101 — Test set-up for sanding gypsum blocks . 8
Figure 102 — A-support . 9
Tables
Table 101 — Operating conditions for sanders when sanding gypsum blocks . 5
Table 102 — Operating conditions for sanders when sanding wood . 6
Table 103 — Operating conditions for sanders when sanding wooden floor . 7
European foreword
This document (EN 50632-2-4:2016) has been prepared by CLC/TC 116 “Safety of motor-operated
electric tools”.
The following dates are fixed:
• latest date by which this document has
(dop) 2017-05-03
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national
(dow) 2018-05-03
standards conflicting with this
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This European Standard is divided into three parts:
Part 1: General requirements for the dust measurement which are common to electric motor-
operated tools (for the purpose of this standard referred to simply as tools);
Part 2 or 3: Requirements for the dust measurement for particular types of tools, which either
supplement or modify the requirements given in Part 1 to account for the particular
characteristics of these specific tools.
This Part 2 is to be used in conjunction with EN 50632-1:2015.
This Part 2 supplements or modifies the corresponding clauses in EN 50632-1:2015.
This Part 2 was developed to set out requirements for the measurement of the concentration for
inhalable and respirable dust emitted by sanders.
Where a particular subclause of Part 1 is not mentioned in this Part 2, that subclause applies as far as
reasonable. When this standard states "addition", "modification" or "replacement", the relevant text in
Part 1 is to be adapted accordingly.
Subclauses, tables and figures which are additional to those in Part 1 are numbered starting from 101.
This European Standard has been drafted in accordance with the CEN/CENELEC Internal
Regulations, Part 3.
The following print types are used:
- requirements proper: in roman type;
- test specifications: in italic type;
- explanatory matter: in smaller roman type.
The terms defined in Clause 3 are printed in bold typeface.
1 Scope
This clause of Part 1 is applicable except as follows:
Addition:
This part of EN 50632 applies to sanders with the exception of all types of rotating disc-type sanders,
which are covered by EN 50632-2-3.
2 Normative references
This
...