EN 50260-2-5:2002

SLOVENSKI STANDARD
01-september-2002
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Safety of hand-held battery-powered motor-operated tools and battery packs -- Part 2-5:
Particular requirements for circular saws and circular knives
Sicherheit für handgeführte akkubetriebene Elektrowerkzeuge und Akkublöcke -- Teil 2-
5: Besondere Anforderungen für Kreissägen und Kreismesser
Sécurité des outils électroportatifs alimentés par batteries et des blocs de batteries --
Partie 2-5: Règles particulières pour les scies circulaires et les couteaux circulaires
Ta slovenski standard je istoveten z: EN 50260-2-5:2002
ICS:
25.080.60 Strojne žage Sawing machines
25.140.20 (OHNWULþQDRURGMD Electric tools
29.220.20 .LVOLQVNLVHNXQGDUQLþOHQLLQ Acid secondary cells and
EDWHULMH batteries
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50260-2-5
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2002
ICS 25.140.20
English version
Safety of hand-held battery-powered motor-operated tools
and battery packs
Part 2-5: Particular requirements for circular saws
and circular knives
Sécurité des outils électroportatifs Sicherheit für handgeführte
alimentés par batteries et des blocs akkubetriebene Elektrowerkzeuge
de batteries und Akkublöcke
Partie 2-5: Règles particulières pour Teil 2-5: Besondere Anforderungen
les scies circulaires et les couteaux für Kreissägen und Kreismesser
circulaires
This European Standard was approved by CENELEC on 2001-01-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50260-2-5:2002 E
Foreword
This European Standard has been prepared by the Technical Committee CENELEC TC 61F, Hand-
held and transportable electric motor-operated tools.
A first draft was submitted to the unique acceptance procedure in August 1996 with positive result. A
second draft incorporating the editorial comments received during the UAP and the modifications
necessary to incorporate the mechanical requirements which have been agreed for hand held tools
was submitted to the formal vote in September 2000 and was approved by CENELEC as
EN 50260-2-5 on 2001-01-01.
The following dates were fixed:
- latest date by the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-03-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-03-01
This European Standard is divided into two parts:
Part 1: General requirements which are common to most hand-held battery powered motor operated
tools (for the purpose of this European Standard referred to simply as tools).
Part 2: Requirements for particular types of tool which either supplement or modify the requirements
given in Part 1 to account for the particular hazards and characteristics of these specific tools.
This European Standard has been prepared under a mandate (M/083) given to CEN and CENELEC by
the European Commission and the European Free Trade Association and supports the essential safety
requirements of the Machinery Directive.
Compliance with the clauses of Part 1 of this European Standard together with this Part 2 provides one
means of conforming with the specified essential requirements of the Directive concerned.
For noise and vibration, this European Standard covers the requirements for their measurement, the
provision of information arising from these measurements and the provision of information about the
personal protective equipment required. Specific requirements for the reduction of the risk arising from
noise and vibration through design of the tool are not given as this reflects the current state of the art.
As with any standard, technical progress will be kept under review so that any developments can be
taken into account.
Warning: Other requirements and other EC Directives can be applicable to the products falling within
the scope of this European Standard.
Hand held motor-operated tools are covered by the EN 50144 series.
In order to be consistent with the EN 50144 series, the same order of clauses has been kept; the
missing clauses are considered void.
CEN/TC 255 is producing standards for non electrically driven circular saws (EN 792-12).
This European Standard follows the overall requirements of EN 292-1 and EN 292-2.
Subclauses, tables and figures which are additional to those in Part 1 are numbered starting from 101.
NOTE: In this standard the following print types are used:
- Requirements proper;
- Test specifications;
- Explanatory matter.
- 3 - EN 50260-2-5:2002
Contents
1 Scope .4
2 Definitions.4
3 General requirements.5
4 General conditions for the tests.5
5 Rating .5
6(void)
7 Marking and information for use.5
8 Protection against electric shock.6
9(void)
10 (void)
11 (void)
12 (void)
13 Environmental requirements .6
14 Moisture resistance .7
15 Insulation resistance and electric strength .7
16 (void)
17 Abnormal operation .7
18 Mechanical hazards.7
19 Mechanical strength .11
20 Construction .11
21 Components .11
22 Internal wiring .11
23 (void)
24 (void)
25 (void)
26 Screws and connections .12
27 Creepage distances, clearances and distances through insulation .12
28 Resistance to heat, fire and tracking .12
29 Resistance to rusting.12
Figures.13

1 Scope
This clause of Part 1 is applicable except as follows:
Addition:
This European Standard applies to all types of circular saws for cutting wood and similar materials and
circular knives.
These requirements do not cover circular saws and circular knives when mounted in a support for use
as fixed tools.
This European Standard does not give requirements for the design of the tool to reduce the risks
arising from noise and vibration.
2 Definitions
This clause of Part 1 is applicable except as follows:
Additional definitions:
2.101
circular saw with outer pendulum guard
tool the movable guard of which, for operation, swings around the upper fixed guard (see Figure 101)
2.102
circular saw with inner pendulum guard
tool the movable guard of which, for operation, swings inside the upper fixed guard (see Figure 102)
2.103
circular saw with tow guard
tool the movable guard of which, for operation, slides along the upper fixed guard (see Figure 103)
2.104
plunge type circular saw
tool having only a fixed upper guard into which the saw blade retracts when not in use (see Figure 104)
2.105
guide plate
part constituting the plane of reference on the material to be cut
2.106
fixed guard
cover linked to the motor unit which prevents access to the part of the blade situated above the guide
plate
2.107
movable guard
cover which, in the rest position, prevents access to the part of the blade which is not covered by the
fixed guard and which, in most cases, is situated below the guide plate. Plunge type circular saws have
only one guard into which the saw blade retracts at the end of the sawing operation
2.108
riving knife
metal part placed in the plane of the saw blade which prevents the wood from tightening onto the rear
part of the saw blade and thus prevents the backward movement of the tool or jamming of the saw
blade
- 5 - EN 50260-2-5:2002
3 General requirements
This clause of Part 1 is applicable.
4 General conditions for the tests
This clause of Part 1 is applicable.
5Rating
This clause of Part 1 is applicable.
6Void
7 Marking and information for use
This clause of Part 1 is applicable except as follows:
7.1 Addition:
Circular saws and circular knives shall be marked with:
- direction of rotation.
This shall be clearly marked by an arrow, raised or sunk on the fixed guard, or by any other means no
less visible and indelible.
7.8.1 Addition:
The instruction sheet shall contain also the following information:
- the maximum and minimum diameter, the thickness range of the saw blades, and other
characteristics of the blades which can be fitted to the tool;
- the rated no-load speed of the working spindle.
7.8.2 Addition:
Instructions shall also include the substance of the following:
- do not use blades which are deformed or cracked;
- do not use saw blades made of high speed steel;
- do not use blades which do not comply with the characteristics specified in these instructions;
- do not stop the blade by lateral pressure on the disc;
- ensure that movable guards operate freely without jamming;
- do not lock the movable guard in the open position;
- ensure that any retraction mechanism of the guard system operates correctly;
- for circular saws: do not use saw blades the body of which is thicker or the set of which is smaller
than the thickness of the riving knife;

- ensure that the riving knife is adjusted so that
- the distance between the riving knife and the toothed rim of the saw blade is not more than
5 mm,
- the toothed rim does not extend more than 5 mm beyond the lower edge of the riving knife.
- the riving knife should always be used except when plunging in the middle of the work piece;
- for circular saws for woodworking, the advice that if used in confined areas (e.g. indoors), to either
use a dust protection or a dust collection equipment.
8 Protection against electric shock
This clause of Part 1 is applicable.
9Void
10 Void
11 Void
12 Void
13 Environmental requirements
This clause of Part 1 is applicable except as follows:
13.1 Void
13.2.2.4 Addition:
For circular knives, the blade shall be vertical.
13.2.2.5  Replacement of paragraphs 3 and 4:
Circular saws are tested under load under the conditions shown in Table 101:
Table 101 — Test conditions for circular saws
Orientation Cutting a horizontal piece of chipboard 800 mm x 400 mm x 19 mm
supported on resilient material and fixed to a bench
Tool bit/cutter/abrasive New blade as recommended by the manufacturer for cutting chipboard
Feed force Just sufficient to cut at a brisk pace
Test cycle Cutting off approximately 10 mm wide strips (set by rip fence) across the
400 mm width of the chipboard
Circular knives are tested at no load.
13.3.6 Replacement of paragraph 1:
Circular saws and circular knives are tested under the conditions specified in 13.2.2.4 and 13.2.2.5.
Paragraph 3 is not applicable.

- 7 - EN 50260-2-5:2002
14 Moisture resistance
This clause of Part 1 is applicable.
15 Insulation resistance and electric strength
This clause of Part 1 is applicable.
16 Void
17 Abnormal operation
This clause of Part 1 is applicable.
18 Mechanical hazards
This clause of Part 1 is applicable except as follows:
18.1 Replacement:
Circular saws and circular knives shall be equipped with an adequate guarding system which can
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