EN ISO 5353:1998

Earth-moving machinery, and tractors and machinery for agriculture and forestry - Seat index point (ISO 5353:1995)

States a method and the device for use in determining the position of the seat index point (SIP) for any kind of seat designed for earth-moving machinery as defined in ISO 6165, and tractors and machinery for agriculture and forestry as defined in ISO 3339-0.

Erdbaumaschinen sowie Traktoren und Maschinen für Land- und Forstwirtschaft - Sitzindexpunkt (ISO 5353:1995)

Diese Internationale Norm beschreibt ein Verfahren und eine Gerät zur Bestimmung der Position des Sitzindexpunkts (SIP) für alle Sitzarten, die für den Einsatz in Erdbaumaschinen, wie in ISO 6165 definiert, sowie Traktoren und Maschinen für Land- und Forstwirtschaft, wie in ISO 3339-0 definiert, entwickelt wurden. Damit wird ein einheitliches Verfahren zur Bestimmung der Position des SIP im Verhältnis zu einem Befestigungspunkt des Sitzes definiert. Der SIP kann am Sitz allein oder in seiner Anordnung auf der Maschine bestimmt werden.

Engins de terrassement et tracteurs et matériels agricoles et forestiers - Point repère du siège (ISO 5353:1995)

La présente Norme internationale prescrit une méthode et le dispositif à utiliser pour la détermination du point repère du siège (SIP) pour tout type de siège conçu pour les engins de terrassement définis dans l'ISO 6165, et pour les tracteurs et matériels agricoles et forestiers définis dans l'ISO 3339-0. Elle donne ainsi une méthode uniforme pour définir l'emplacement du SIP par rapport à un point de fixation quelconque sur le siège. Le SIP peut être déterminé sur le siège en place dans l'engin de terrassement, ou hors de celui-ci. Le SIP constitue une caractéristique du siège et peut donc être spécifié directement par le fabricant du siège.

Stroji za premikanje zemljin, traktorji ter kmetijski in gozdarski stroji - Referenčna točka sedeža

General Information

• Status: Published
• Publication Date: 22-Sep-1998
• Withdrawal Date: 30-Mar-1999
• ICS: 53.100 - Earth-moving machinery
• ICS: 65.060 - Agricultural machines, implements and equipment
• Technical Committee: CEN/TC 151 - Construction equipment and building material machines - Safety
• Drafting Committee: CEN/TC 151/WG 1 - Earth-moving machinery - Safety
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 23-Sep-1998
• Completion Date: 23-Sep-1998
• Directive: 98/37/EC - Machinery
• Ref Project: SIST EN ISO 5353:1999 - Earth-moving machinery, and tractors and machinery for agriculture and forestry - Seat index point (ISO 5353:1995)

Overview

EN ISO 5353:1998 (ISO 5353:1995) specifies a uniform method and the measuring device for determining the Seat Index Point (SIP) for seats used in earth‑moving machinery and in tractors and machinery for agriculture and forestry. The SIP is a defined point on the central vertical plane of a seat that serves as a reference for operator workspace design, ergonomics and safety assessments. This standard defines the device, seating preparation, adjustment procedures and reporting requirements to ensure reproducible SIP measurements.

Key topics and technical requirements

• Scope: Applies to any seat designed for earth‑moving machinery (see ISO 6165) and tractors/agricultural & forestry machinery (see ISO 3339‑0).
• SIP definition: The point on the seat’s central vertical plane determined by the specified device. It is fixed relative to the machine and does not move with seat adjustments.
• Measuring device: A wooden/hardwood device (sanded to 200 grit or equivalent) with defined geometry and masses. Initial device mass: 6 kg ± 1 kg. Additional masses are added in stages to reach 26 kg ± 1 kg and then 65 kg ± 1 kg total to simulate operator loading. The vertical centre of added masses is positioned 40 mm in front of the SIP mark on the device.
• Seat preparation and conditioning:
  • Allow seat and environment to reach 20 °C ± 2 °C.
  • Seat on level surface; a 75 kg ± 10 kg person sits twice for 1 minute each to flex cushions.
  • Cover seat with a single layer of muslin to minimize friction.
• Adjustment and suspension:
  • Place seat adjustments (fore/aft, vertical, angular) at centre positions where applicable.
  • Block suspension per manufacturer’s instructions or at midpoint of its oscillation range.
• Measurement procedure:
  • Place device centrally, ensure it is level and laterally controlled.
  • Take measurements on both sides at equal distances from the central plane and average.
  • Record SIP coordinates relative to the manufacturer’s fixing point to ±1 mm.
• Reporting: Include reference to the standard, any deviations, test conditions, a drawing/sketch showing coordinates between fixing point and SIP, and descriptions of relevant adjustment ranges.

Applications and who uses this standard

• Seat manufacturers specifying SIP for product data sheets
• OEMs of earth‑moving and agricultural/forestry machinery for operator workspace design
• Ergonomists and human‑factors engineers assessing operator posture and reach
• Test laboratories and compliance officers performing seat testing and certification
• Designers integrating seats into cab layouts and safety systems

Related standards

• ISO 6165 - Earth‑moving machinery: basic types and vocabulary
• ISO 3339‑0 - Tractors and machinery for agriculture and forestry: classification and terminology

Keywords: seat index point, SIP, ISO 5353, EN ISO 5353, earth‑moving machinery, tractor seat measurement, seat testing, operator workspace, ergonomics.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-1999
1DGRPHãþD
SIST EN 25353:1995
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WRþNDVHGHåD
Earth-moving machinery, and tractors and machinery for agriculture and forestry - Seat
index point (ISO 5353:1995)
Erdbaumaschinen sowie Traktoren und Maschinen für Land- und Forstwirtschaft -
Sitzindexpunkt (ISO 5353:1995)
Engins de terrassement et tracteurs et matériels agricoles et forestiers - Point repere du
siege (ISO 5353:1995)
Ta slovenski standard je istoveten z: EN ISO 5353:1998
ICS:
53.100 Stroji za zemeljska dela Earth-moving machinery
65.060.01 Kmetijski stroji in oprema na Agricultural machines and
splošno equipment in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL
STANDARD
Second edition
1995-12-01
Earth-moving machinery, and tractors and
machinery for agriculture and forestry -
Seat index Point
Engins de ten-assemen t, et tracteurs et ma Wiek agricoles et
forestiers - Point repere du siege
=wf!e
Reference number
ISO 5353:1995(E)
ISO 5353:1995(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. Esch 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.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 5353 was prepared by Technical Committee
ISO/TC 127, Earth-moving machinery, Subcommittee SC 2, Safety re-
quirements and human factors.
This second edition cancels and replaces the first edition
(ISO 5353:1978), o f w h’ IC h ‘I t constitutes a technical revision.
0 ISO 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopying and
microfilm, without Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
ii
ISO 5353: 1995(E)
INTERNATIONAL STANDARD 0 ISO
Earth-moving machinery, and tractors and machinery
- Seat index Point
for agriculture and forestry
3 Definitions
1 Scope
For the purposes of this International Standard, the
This International Standard specifies a method and
following definitions apply.
the device for use in determining the Position of the
seat index Point (SIP) for any kind of seat designed for
3.1 seat index Point; (SIP): Point on the central
earth-moving machinery as defined in ISO 6165, and
vertical plane of the seat as determined by the device
tractors and machinery for agriculture and forestry as
shown in figure 1, when installed in the seat as
defined in ISO 3339-0.
specified in 5.3.
This provides a uniform method for defining the lo-
NOTES
cation of the SIP in relation to a fixing Point on the
seat. The SIP may be determined on a seat by itself
1 The SIP is fixed with respect to the machine and does
or with the seat located in its operating environment
not move with the seat through its adjustment and/or os-
on the machine. The SIP is a characteristic of the seat;
cillation range.
therefore, it may be specified by the seat manufac-
turer.
2 The SIP as established and defined by this International
Standard may be considered, for Operator work-place design
purposes, to be equivalent to the intersection on the central
vertical plane through the seat centreline of the theoretical
Pivot axis between a human torso and thighs.
3.2 fixing Point: Point specified by the manufac-
turer to which the SIP is referenced.
2 Normative references
See figures 2 and 3 for examples.
The following Standards contain provisions which,
through reference in this text, constitute provisions
of this International Standard. At the time of publi-
4 Multiple machine function seats
cation, the editions indicated were valid. All Standards
are subject to revision, and Parties to agreements
Some seats are designed to locate and fix an Operator
based on this International Standard are encouraged
to perform more than one function with a given ma-
to investigate the possibility of applying the most re-
chine. Where a second Position of the seat is provided
cent editions of the Standards indicated below.
because the machine or tractor has a second set of
Members of IEC and ISO maintain registers of cur-
controls, the SIP of the seat has two locations relative
rently valid International Standards.
to the machine or tractor, one for each Position, as if
there were two seats in the machine or tractor. The
ISO 3339-0: 1986, Trattors and machinery for agr
...