INTERNATIONAL ISO
STANDARD 13861
Second edition
Machinery for forestry — Wheeled
skidders — Terms, definitions and
commercial specifications
Matériel forestier — Débusqueuses à roues — Termes, définitions et
spécifications commerciales
PROOF/ÉPREUVE
Reference number
ISO 13861:2021(E)
© ISO 2021
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ISO 13861:2021(E)
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ISO 13861:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

3.1 General terms .......................................................................................................................................................................................... 1

3.2 Terms related to masses ................................................................................................................................................................ 1

3.3 Terms related to main machine dimensions ................................................................................................................ 2

3.4 Terms related to grapple dimensions ................................................................................................................................ 5

3.5 Terms related to grapple configurations ........................................................................................................................ 6

3.6 Terms related to butt plate dimensions ........................................................................................................................... 7

4 Required information ..................................................................................................................................................................................... 7

Annex A (informative) Examples of dimensions and features ................................................................................................. 9

Bibliography .............................................................................................................................................................................................................................13

iii
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ISO 13861:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

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expressions related to conformity assessment, as well as information about ISO's adherence to

the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see

www.iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture

and forestry, Subcommittee SC 15, Machinery for forestry.

This second edition cancels and replaces the first edition (ISO 13861:2000), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— added a new terminological entry for "skidder";
— moved ISO 6814 to the Bibliography;
— deleted the terms "right hand", "left hand", "front" and "rear";
— revised Clause 4 to explicitly state the required information;
— updated Figures A.1 and A.4;
— moved the figures to a new informative Annex A;
— applied editorial changes.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www.iso.org/members.html.
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INTERNATIONAL STANDARD ISO 13861:2021(E)
Machinery for forestry — Wheeled skidders — Terms,
definitions and commercial specifications
1 Scope

This document specifies terminology and required information as a general framework for identifying

and describing the main dimensions and features of wheeled skidders.
It is applicable to articulated wheeled cable and grapple skidders.

NOTE The terminology and requirements given in this document do not necessarily all apply to a specific

machine. Machines can be characterized by the dimensions and features which are relevant to them.

2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1 General terms
3.1.1
skidder

self-propelled machine designed to transport trees or parts of trees by trailing or dragging

[SOURCE: ISO 6814:2009, 2.3.1.15]
3.1.2
ground reference plane
GRP
hard, flat, horizontal surface on which the machine is placed for measurements
3.2 Terms related to masses
3.2.1
normal operating mass

total mass of the machine as specified, fully serviced, with full fluid levels and a 75 kg operator

3.2.2
maximum operating mass

total mass of the machine as specified, fully serviced, with full fluid levels and a 75 kg operator, including

all machine options with the largest tyre or hydro-inflation combination and the manufacturer's

load on each axle at normal operating mass (3.2.1) or maximum operating mass (3.2.2)

3.3 Terms related to main machine dimensions
3.3.1
total frame length

horizontal distance between the vertical planes perpendicular to the longitudinal axis passing through

the farthest points on the front and rear of the machine, including fenders, tow bars, butt plate, etc., but

excluding the fairlead, blade, or grapple
Note 1 to entry: See Figure A.1.
3.3.2
overall length

horizontal distance from a vertical plane touching the forwardmost point of the machine, blade

positioned to give maximum forward reach, to a vertical plane touching the rearmost point of the

machine
Note 1 to entry: See Figure A.1.
3.3.3
wheelbase

horizontal distance from the centre of the front axle or front bogie axle assembly to the centre of the

rear axle or rear bogie axle assembly when both axles are perpendicular to the longitudinal axis

Note 1 to entry: See Figure A.1.
3.3.4
articulation joint to maximum blade arc

horizontal distance from the centreline of the articulation joint to a vertical line tangent to the arc of

the blade's lower edge as it passes from its maximum height h to the lowest blade position h

3 4
Note 1 to entry: Note to entry: See Figure A.1.
3.3.5
articulation joint to front of machine

horizontal distance from the centreline of the articulation joint to a vertical plane touching the farthest

point forward, blade excluded
Note 1 to entry: See Figure A.1.
3.3.6
articulation joint to front axle

horizontal distance from the centreline of the articulation joint to the centre of the front axle or front

vertical distance between the ground reference plane (3.1.2) and a horizontal plane passing through the

highest point of the machine
Note 1 to entry: See Figure A.1.
3.3.8
blade height

vertical distance from the lower edge, resting on the ground reference plane (3.1.2), to the top of the

blade, decking lugs excluded
Note 1 to entry: See Figu
...

ISO/PRF 13861

Machinery for forestry -- Wheeled skidders -- Terms, definitions and commercial specifications

Machinery for forestry -- Wheeled skidders -- Terms, definitions and commercial specifications

Matériel forestier -- Débusqueuses à roues -- Termes, définitions et spécifications commerciales

General Information

RELATIONS

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Machinery for forestry -- Wheeled skidders -- Terms, definitions and commercial specifications

Matériel forestier -- Débusqueuses à roues -- Termes, définitions et spécifications commerciales

General Information

RELATIONS

Buy Standard

Standards Content (sample)

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

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