IEC 60745-2-5:2010

IEC 60745-2-5 ®
Edition 5.0 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Hand-held motor-operated electric tools – Safety –
Part 2-5: Particular requirements for circular saws

Outils électroportatifs à moteur – Sécurité –
Partie 2-5: Règles particulières pour les scies circulaires

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IEC 60745-2-5 ®
Edition 5.0 2010-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Hand-held motor-operated electric tools – Safety –
Part 2-5: Particular requirements for circular saws

Outils électroportatifs à moteur – Sécurité –
Partie 2-5: Règles particulières pour les scies circulaires

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
X
CODE PRIX
ICS 25.140.20; 25.140.30 ISBN 978-2-88912-070-3
– 2 – 60745-2-5 © IEC:2010
CONTENTS
FOREWORD.0H4
1 Scope.1H6
2 Normative references .2H6
3 Terms and definitions .3H6
4 General requirements .4H7
5 General conditions for the tests .5H7
6 Void.6H7
7 Classification.7H7
8 Marking and instructions.8H7
9 Protection against access to live parts.9H10
10 Starting .10H10
11 Input and current .11H11
12 Heating .12H11
13 Leakage current .13H11
14 Moisture resistance .14H11
15 Electric strength .15H11
16 Overload protection of transformers and associated circuits .16H11
17 Endurance.17H11
18 Abnormal operation .18H13
19 Mechanical hazards.19H14
20 Mechanical strength .20H19
21 Construction .21H19
22 Internal wiring.22H20
23 Components .23H20
24 Supply connection and external flexible cords .24H20
25 Terminals for external conductors.25H20
26 Provision for earthing .26H20
27 Screws and connections .27H20
28 Creepage distances, clearances and distances through insulation.28H20
29 Resistance to heat, fire and tracking.29H20
30 Resistance to rusting.30H20
31 Radiation, toxicity and similar hazards.31H21
32H29
Annexes .
Annex K (normative) Battery tools and battery packs .33H29
Annex L (normative) Battery tools and battery packs provided with mains connection
or non-isolated sources.34H29
Annex M (normative) Safety of working stands for operation with hand-held motor-
operated electric tools .35H30
Annex AA (normative) Additional requirements for saws with a riving knife .36H45
Annex BB (normative) Additional requirements for lower guards for saws without a
37H48
riving knife .
Bibliography.38H49

60745-2-5 © IEC:2010 – 3 –
Figure 101 – Circular saw with outer pendulum guard .39H21
Figure 102 – Circular saw with inner pendulum guard .40H21
Figure 103 – Circular saw with tow guard.41H21
Figure 104 – Plunge type saw.42H21
Figure 105 – Test probe 'a' .43H22
Figure 106 – Use of test probe ‘a’ on circular saw guards .44H22
Figure 107 – Distance from the gripping surface to the blade’s cutting zone .45H23
Figure 108 – Height restriction of the viewing aperture (see 19.101.2.1) .46H24
Figure 109 – Distance from the edge of the lateral side of the upper guard to the base
plate .47H25
Figure 110 – Test probe 'b' .48H25
Figure 111 – Accessibility to the front cutting edge zone.49H26
Figure 112 – Blade exposure angle of the lower guard.50H27
Figure 113 – Principal dimensions of the base plate .51H27
Figure 114 – Flange characteristics .52H28
Figure M.301 – Saw table fitted with hand-held circular saw .53H39
Figure M.302 – Testing the stability of the guard support .54H40
Figure M.303 – Saw table dimensions.55H41
Figure M.304 – Position of the outfeed end of the rip fence.56H42
Figure M.305 – Rip fence in low position.57H42
Figure M.306 – Examples of shapes of slot for locating cross-cut fence on saw tables.58H43
Figure M.307 – Examples of push stick and push blocks.59H44
Figure AA.101 – Riving knife stability test .60H47
Figure AA.102 – Riving knife adjustment.61H47

Table M.301 – Riving knife testing – strength of riving knife.62H34

– 4 – 60745-2-5 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS –
SAFETY –
Part 2-5: Particular requirements for circular saws

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60745-2-5 has been prepared by IEC technical committee 116:
Safety of hand-held motor-operated electric tools.
This fifth edition cancels and replaces the fourth edition published in 2006, of which it
constitutes a technical revision.
Main changes include: in Clause 17, Endurance: introduction of endurance tests in practical
use for the guards of all types of saws; in Clause 19, Mechanical hazards: clarifications and
editorial improvement in respect to the guarding; and in Annex M, Safety of working stands for
operation with hand-held motor-operated electric tools: editorial improvements.

60745-2-5 © IEC:2010 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
116/41/FDIS 116/52/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 2-5 is to be used in conjunction with the fourth edition of IEC 60745-1, Hand-held
motor-operated electric tools – Safety – Part 1: General requirements. It was established on
the basis of the fourth edition (2006) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60745-1.
This part 2 supplements or modifies the corresponding clauses of IEC 60745-1, so as to
convert that publication into the IEC standard: Safety requirements for circular saws.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states “addition”, “modification” or “replacement”,
the relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:
– subclauses, items, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– additional annexes are lettered AA, BB, etc.
NOTE 3 In this standard, the following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in smaller roman type.
A list of all parts of the IEC 60745 series, under the general title: Hand-held motor-operated
electric tools – Safety, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until

the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 6 – 60745-2-5 © IEC:2010
HAND-HELD MOTOR-OPERATED ELECTRIC TOOLS –
SAFETY –
Part 2-5: Particular requirements for circular saws

1 Scope
This clause of Part 1 is applicable, except as follows:
Addition:
This standard applies to circular saws, which hereinafter will be referred to as saws.
This standard does not apply to saws designed for use with abrasive wheels.
NOTE Saws designed for use with abrasive wheels as cut-off machines are covered by IEC 60745-2-22.
2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable, except as follows:
Additional definitions:
3.101
circular saw
tool intended for cutting various materials with a rotating toothed blade
3.102
cutting edge zone
the outer 20 % of the blade’s radius
3.103
base plate
the part supporting the saw on the material being cut (see Figure 113)
3.104
lower guard
movable blade-covering device which, in the closed or rest position, is mainly situated below
the base plate
3.105
upper guard
fixed and/or movable cover of the blade situated above the base plate
3.106
riving knife
metal part placed in the plane of the saw blade with the intent of preventing the workpiece
from closing on the rear part of the saw blade

60745-2-5 © IEC:2010 – 7 –
3.107
saw with outer pendulum guard
saw having a lower guard which swings outside the upper guard (see Figure 101)
3.108
saw with inner pendulum guard
saw having a lower guard which swings inside the upper guard (see Figure 102)
3.109
saw with tow guard
saw having a lower guard which slides along the upper guard (see Figure 103)
3.110
kickback
sudden reaction to a pinched, bound or misaligned saw blade, causing an uncontrolled saw to
lift up and out of the workpiece
3.111
plunge type saw
saw having only an upper guard into which the saw blade retracts when not in use (see
Figure 104)
4 General requirements
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable.
6 Void
7 Classification
This clause of Part 1 is applicable.
8 Marking and instructions
This clause of Part 1 is applicable, except as follows:
8.1 Addition:
Saws shall be marked with:
– direction of rotation of the spindle, indicated on the tool by an arrow, raised or recessed or
by any other means no less visible and indelible;
– rated no-load speed of the output spindle;
– specified blade diameter or blade diameter range.

– 8 – 60745-2-5 © IEC:2010
Additional subclause:
8.12.1.101 The following additional safety instructions shall be given. If in English they shall
be verbatim and in the following order as applicable and equivalent in any other language.
This part may be printed separately from the general safety instructions.
All notes are not to be printed, they are information for the designer of the manual.
8.12.1.101.1 Safety instructions for all saws
Cutting procedures
a) DANGER: Keep hands away from cutting area and the blade. Keep your
second hand on auxiliary handle, or motor housing. If both hands are holding the
saw, they cannot be cut by the blade.
NOTE For circular saws with 140 mm or smaller diameter blades, the "Keep your second hand on
auxiliary handle, or motor housing" may be omitted.
b) Do not reach underneath the workpiece. The guard cannot protect you from the
blade below the workpiece.
c) Adjust the cutting depth to the thickness of the workpiece. Less than a full tooth of
the blade teeth should be visible below the workpiece.
d) Never hold piece being cut in your hands or across your leg. Secure the
workpiece to a stable platform. It is important to support the work properly to
minimize body exposure, blade binding, or loss of control.
e) Hold the power tool by insulated gripping surfaces only, when performing an
operation where the cutting tool may contact hidden wiring or its own cord.
Contact with a "live" wire will also make exposed metal parts of the power tool "live"
and could give the operator an electric shock.
f) When ripping, always use a rip fence or straight edge guide. This improves the
accuracy of cut and reduces the chance of blade binding.
g) Always use blades with correct size and shape (diamond versus round) of arbour
holes. Blades that do not match the mounting hardware of the saw will run
eccentrically, causing loss of control.
h) Never use damaged or incorrect blade washers or bolt. The blade washers and bolt
were specially designed for your saw, for optimum performance and safety of
operation.
8.12.1.101.2 Further safety instructions for all saws
Kickback causes and related warnings
– kickback is a sudden reaction to a pinched, bound or misaligned saw blade, causing an
uncontrolled saw to lift up and out of the workpiece toward the operator;
– when the blade is pinched or bound tightly by the kerf closing down, the blade stalls
and the motor reaction drives the unit rapidly back toward the operator;
– if the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the
blade can dig into the top surface of the wood causing the blade to climb out of the
kerf and jump back toward the operator.
Kickback is the result of saw misuse and/or incorrect operating procedures or conditions and
can be avoided by taking proper precautions as given below.
a) Maintain a firm grip with both hands on the saw and position your arms to resist
kickback forces. Position your body to either side of the blade, but not in line with
the blade. Kickback could cause the saw to jump backwards, but kickback forces can be
controlled by the operator, if proper precautions are taken.
NOTE For circular saws with 140 mm or smaller diameter blades, the words "with both hands" may be
omitted.
60745-2-5 © IEC:2010 – 9 –
b) When blade is binding, or when interrupting a cut for any reason, release the trigger
and hold the saw motionless in the material until the blade comes to a complete
stop. Never attempt to remove the saw from the work or pull the saw backward while
the blade is in motion or kickback may occur. Investigate and take corrective actions to
eliminate the cause of blade binding.
c) When restarting a saw in the workpiece, centre the saw blade in the kerf and check
that saw teeth are not engaged into the material. If saw blade is binding, it may walk up
or kickback from the workpiece as the saw is restarted.
d) Support large panels to minimise the risk of blade pinching and kickback. Large
panels tend to sag under their own weight. Supports must be placed under the panel on
both sides, near the line of cut and near the edge of the panel.
e) Do not use dull or damaged blades. Unsharpened or improperly set blades produce
narrow kerf causing excessive friction, blade binding and kickback.
f) Blade depth and bevel adjusting locking levers must be tight and secure before
making cut. If blade adjustment shifts while cutting, it may cause binding and kickback.
g) Use extra caution when sawing into existing walls or other blind areas. The
protruding blade may cut objects that can cause kickback.
8.12.1.101.3 Safety instructions for saws shown in Figures 101, 102 and 103
Lower guard function
a) Check lower guard for proper closing before each use. Do not operate the saw if
lower guard does not move freely and close instantly. Never clamp or tie the
lower guard into the open position. If saw is accidentally dropped, lower guard may
be bent. Raise the lower guard with the retracting handle and make sure it moves
freely and does not touch the blade or any other part, in all angles and depths of cut.
NOTE Alternate wording may be substituted for "retracting handle."
b) Check the operation of the lower guard spring. If the guard and the spring are not
operating properly, they must be serviced before use. Lower guard may operate
sluggishly due to damaged parts, gummy deposits, or a build-up of debris.
c) Lower guard may be retracted manually only for special cuts such as "plunge
cuts" and "compound cuts". Raise lower guard by retracting handle and as soon as
blade enters the material, the lower guard must be released. For all other sawing, the
lower guard should operate automatically.
NOTE Alternate wording may be substituted for "retracting handle."
d) Always observe that the lower guard is covering the blade before placing saw
down on bench or floor. An unprotected, coasting blade will cause the saw to walk
backwards, cutting whatever is in its path. Be aware of the time it takes for the blade to
stop after switch is released.
8.12.1.101.4 Safety instructions for saws shown in Figure 104
Guard function
a) Check guard for proper closing before each use. Do not operate the saw if guard
does not move freely and enclose the blade instantly. Never clamp or tie the
guard so that the blade is exposed. If saw is accidentally dropped, guard may be
bent. Check to make sure that guard moves freely and does not touch the blade or any
other part, in all angles and depths of cut.
b) Check the operation and condition of the guard return spring. If the guard and
the spring are not operating properly, they must be serviced before use. Guard
may operate sluggishly due to damaged parts, gummy deposits, or a build-up of
debris.
c) Assure that the base plate of the saw will not shift while performing the “plunge
cut” when the blade bevel setting is not at 90°. Blade shifting sideways will cause
binding and likely kick back.
– 10 – 60745-2-5 © IEC:2010
d) Always observe that the guard is covering the blade before placing saw down on
bench or floor. An unprotected, coasting blade will cause the saw to walk backwards,
cutting whatever is in its path. Be aware of the time it takes for the blade to stop after
switch is released.
8.12.1.101.5 Additional safety instructions for all saws with riving knife
Riving knife function
a) Use the appropriate saw blade for the riving knife. For the riving knife to function,
the body of the blade must be thinner than the riving knife and the cutting width of the
blade must be wider than the thickness of the riving knife.
b) Adjust the riving knife as described in this instruction manual. Incorrect spacing,
positioning and alignment can make the riving knife ineffective in preventing kickback.
c) Always use the riving knife except when plunge cutting. Riving knife must be
replaced after plunge cutting. Riving knife causes interference during plunge cutting
and can create kickback.
NOTE This warning is not applicable for plunge type saws with a spring loaded riving knife
d) For the riving knife to work, it must be engaged in the workpiece. The riving knife
is ineffective in preventing kickback during short cuts.
e) Do not operate the saw if riving knife is bent. Even a light interference can slow the
closing rate of a guard.
8.12.2 a) Addition:
101) Instructions not to use any abrasive wheels.
102) For saws with riving knife the instruction shall include the following:
– instructions to ensure that the riving knife is adjusted so that the distance between
the riving knife and the rim of the blade is not more than 5 mm, and the rim of the
blade does not extend more than 5 mm beyond the lowest edge of the riving knife;
– information about the allowed range of saw blade body thickness and the tooth set
of the blade.
103) Instructions to use only blade diameter(s) in accordance with the markings.
8.12.2 b) Addition:
101) Instructions for the blade changing procedure.
102) Instruction how to check the function of all blade guard operations.
103) Information regarding what materials can be cut. Instructions to avoid overheating the
blade tips and, if cutting plastics is permitted, to avoid melting the plastic.
104) Instruction on the correct use of the dust collection system.

8.12.2 c) Addition:
101) Instructions how to properly clean the tool and guarding system.
9 Protection against access to live parts
This clause of Part 1 is applicable.
10 Starting
This clause of Part 1 is applicable.

60745-2-5 © IEC:2010 – 11 –
11 Input and current
This clause of Part 1 is applicable.
12 Heating
This clause of Part 1 is applicable.
13 Leakage current
This clause of Part 1 is applicable.
14 Moisture resistance
This clause of Part 1 is applicable.
15 Electric strength
This clause of Part 1 is applicable.
16 Overload protection of transformers and associated circuits
This clause of Part 1 is applicable.
17 Endurance
This clause of Part 1 is applicable, except as follows:
Additional subclauses:
17.101 To provide sufficient endurance for extended use, the lower guard as shown in
Figures 101, 102 and 103, or the guarding system as shown in Figure 104, shall have a
longevity of 50 000 operating cycles.
Compliance is checked by a new saw sample completing the following test.
The saw is to be set for 90° with the base plate in horizontal position and the blade removed.
The lower guard, or the guarding system as shown in Figure 104, is retracted from the fully
closed position to the maximum open working position and then released. This sequence is
repeated at a rate not less than 10 cycles per minute.
The sample used for this test may be positioned in a manner other than horizontal provided
that it can be shown that the alternate position is equal or more severe.
After completion of cycling test as specified above, the saw shall then comply with the tests of
17.101.1 and 17.101.2.
– 12 – 60745-2-5 © IEC:2010
17.101.1 The test and measurement is carried out at maximum depth of cut and 90°. The
saw is held by the handles with the base plate in a horizontal position, the upper guard being
at the top.
Without any restoration or cleaning, the lower guard as shown in Figures 101, 102 and 103, or
the guarding system as shown in Figure 104, is retracted fully and then allowed to close. The
closing time from the fully open position to the fully closed position shall not exceed 0,3 s.
17.101.2 The following tests and measurements are carried out at maximum depth of cut, at
90° and in the following positions:
a) The saw is held with the base plate in the horizontal position, with the upper guard being
at the top.
b) The saw is then held with the base plate in the vertical position, with the front of the saw
pointing upwards.
For saws using a guarding system as shown in Figures 101 and 102, the lower guard is
retracted fully and then allowed to close. Without any alteration, the final position of the lower
guard in both cases shall be in contact with the lower guard stopper and shall not change as a
result of moving the base plate to a minimum depth of cut setting and the guarding shall
comply with the requirements of 19.102.3.
For saws using a guarding system as shown in Figures 103 and 104, the lower guard, or the
guarding system as shown in Figure 104, is fully retracted, released and then shall lock in the
blade covering position.
17.102 The lower guard, or the guarding system as shown in Figure 104, shall be resistant
against environmental and foreseeable dust accumulation.
Compliance is checked by the tests of 17.102.1 and 17.102.2, as applicable.
17.102.1 For a saw intended to cut wood based materials, a new saw sample is subjected to
1 000 cuts through each of the materials and in the order as specified below:
d) crosscutting soft wood;
e) crosscutting plywood with a minimum of 5 layers;
f) cutting standard medium density fibreboard (MDF) with a density between 650 kg/m³ and
850 kg/m .
The materials are stored indoors for 72 h prior to sawing. The thickness and length of each
material to be cut may vary in size, provided the thickness of the material is minimum 10 mm
and the cross sectional area of each cut is at least 30 mm × D, where D is the blade diameter.
During each cut, the lower guard or the guarding system shall cycle from the fully closed
position to the maximum open working position for each cutting cycle, without manual
assistance. Moreover, for plunge saws with a spring loaded riving knife, the riving knife shall
cycle from its fully extended to the fully retracted position.
If the lower guard, guarding system or the riving knife fails to return to its normal position at
any time during the test, this is considered a failure.
Each cut is made with the saw set to 90° and maximum depth of cut. The cutting is conducted
with a general purpose combination blade or the blade provided with the tool. An external dust
extraction system attached to the saw shall not be used. A non-detachable dust collection
system shall be maintained per 8.12.2. b) 104).
NOTE Adequate room ventilation and use of personal protective equipment is recommended.

60745-2-5 © IEC:2010 – 13 –
After completion of all cuts as specified above, the saw is conditioned for 24 h in air at a
relative humidity of (93 ± 3) %. The temperature of the air is maintained within 1 K of any
convenient value between 20 °C and 30 °C.
The saw shall then comply with the tests of 17.101.1 and 17.101.2.
17.102.2 For a saw intended to cut materials such as plastic, metal or masonry, a new saw
sample for each specified material is subjected to the tests as specified below.
− Plastics: 1 000 cuts through PVC. The thickness and length of the material may vary in
size, provided the cross sectional area of each cut is at least 0,012 × D , where D is the
blade diameter.
NOTE 1 The above formula simulates the cross sectional area of typical PVC pipes of a diameter approximately
equal to 2/3 of the maximum cutting capacity of the saw. Sawing of such pipes is the predominant application for
plastic.
− Metals: 200 cuts through soft steel. The thickness and length of the material may vary in
1,46 2
size, provided the cross sectional area of each cut is at least 0,13 × D in mm , where D
is the blade diameter in mm.
NOTE 2 The above formula simulates the cross sectional area of typical metal pipes of a diameter approximately
equal to 1/2 of the maximum cutting capacity of the saw. Sawing of such pipes is the predominant application for
metal.
− Masonry: 500 cuts through masonry fibreboard (fibre cement board). The thickness and
length of the fibreboard may vary in size, provided the thickness of the material is
minimum 10 mm and the cross sectional area of each cut is at least 30 mm × D, where D
is the blade diameter.
During each cut, the lower guard or the guarding system shall cycle from the fully closed
position to the maximum open working position for each cutting cycle, without manual
assistance. Moreover, for plunge saws with a spring loaded riving knife, the riving knife shall
cycle from its fully extended to the fully retracted position.
If the lower guard, guarding system or the riving knife fails to return to its normal position at
any time during the test, this is considered a failure.
Each cut is made with the saw set to 90°. The depth of cut, the saw blade and the rate of
sawing shall be as specified for the respective material. An external dust extraction system
attached to the saw shall not be used. A non-detachable dust collection system shall be
maintained per 8.12.2. b) 104).
NOTE 3 Adequate room ventilation and use of personal protective equipment is recommended.
After completion of all cuts as specified above, the saw is conditioned for 24 h in air at a
relative humidity of (93 ± 3) %. The temperature of the air is maintained within 1 K of any
convenient value between 20 °C and 30 °C.
The saw shall then comply with the tests of 17.101.1 and 17.101.2.
18 Abnormal operation
This clause of Part 1 is applicable, except as follows:
18.10.4 Addition:
During these tests, the speed of the spindle shall not exceed 130 % of the rated no-load
speed.
– 14 – 60745-2-5 © IEC:2010
19 Mechanical hazards
This clause of Part 1 is applicable, except as follows:
19.1 Replacement of the first paragraph:
Moving and dangerous parts other than the rotating blade shall be so arranged or enclosed
that, in normal use, adequate protection against injury is provided. The guarding of rotating
blade is covered in 19.1.101.
Additional subclause:
19.1.101 Saws shall be so guarded as to minimise the risk of accidental access to the
rotating blade during conditions of normal use. Guarding systems shall not be removable
without the aid of a tool.
There are four commonly used guarding systems for saws, as shown in Figures 101, 102, 103
and 104. Guarding systems can be designed with the blade on the right or on the left side of
the saw. These guarding systems shall comply with the requirements of 19.101 and 19.102.
Each one of these guarding system types can be designed with or without the riving knife
(item 6 in the figures).
– If a guarding system is designed with a riving knife, it shall meet the additional
requirements of Annex AA.
– If a guarding system is designed without a riving knife, it shall meet the additional
requirements of Annex BB.
Other means of achieving the necessary degree of mechanical safety are allowed, provided
that these are as equally effective and reliable as those specified.
Compliance is checked by inspection.
19.3 This subclause is not applicable.
Additional subclauses:
19.101 Guarding above the base plate
19.101.1 The blade above the base plate shall be guarded by the upper guard.
Compliance is checked by inspection.
19.101.2 Apertures in the guarding system above the base plate, unless otherwise specified
in 19.101.2.1 to 19.101.2.4, shall be designed to prevent contact with the cutting edge zone of
any specified blade.
Compliance is checked with the test probe ‘a' of Figure 105, which is inserted at any angle
and to the depth possible. The test is performed with the saw set for 90° and maximum depth
of cut.
60745-2-5 © IEC:2010 – 15 –
19.101.2.1 On the motor side of the upper guard, adjacent to the cutting edge zone at the
front of the blade an aperture may be provided for viewing the line of the cut. This viewing
aperture shall either meet the requirements of 19.101.2, as illustrated in Figure 106, or it shall
be limited by proximity and height restrictions.
ƒ Proximity restriction
A minimum straight line distance of 120 mm shall be achieved between the cutting edge zone
of any specified blade and the designated measuring points of the following grasping areas:
– the auxiliary handle, if provided;
– if no auxiliary handle is provided:
• the motor casing, if the motor casing is designed as grasping area;
• the switch trigger grasping surface, if the motor casing is not designed as grasping
area.
Compliance is checked by the following measurements, which shall be conducted with the
base plate set to maximum depth of cut and 90°.
a) To establish the measuring points on the auxiliary handle or the motor casing (as shown in
Figure 107), follow the procedure outlined below.
Establish the closest (A) and the most distant (B) points on the auxiliary handle or motor
from the blade. For the motor casing, the closest (A) point
casing defined grasping surface
to the blade is assumed to be in the plane of the main handle farthest from the blade.
Equidistant between points (A) and (B), but not more than 45 mm away from point (A),
draw the vertical intersecting line of the plane parallel with the blade and the surface of
the auxiliary handle or motor casing, as applicable.
Then establish the closest (C) and the most distant (D) point from the plane of the base
plate on the auxiliary handle or motor casing defined grasping surface. Equidistant
between points (C) and (D), draw the horizontal intersecting line of the plane parallel with
the base plate and the surface of the auxiliary handle or motor casing, as applicable.
The intersection of the vertical and horizontal lines drawn on the applicable surface is the
defined measuring point.
Then measure from this defined point to the cutting edge zone.
b) For the switch grasping area:
Measure the distance from the cutting edge zone
...