ISO 7072:1993

Tractors and machinery for agriculture and forestry — Linch pins and spring pins — Dimensions and requirements

Specifies the dimensions and certain requirements (material, anti-corrosive treatment, pre-stress of the spring-retaining device) for linch pins and spring pins which are used for the three-point hitch and for numerous fastening purposes in farm work and agricultural equipment.

Tracteurs et matériels agricoles et forestiers — Goupilles à abattant et goupilles-ressorts — Dimensions et exigences

Traktor, kmetijski in gozdarski stroji - Varnostni zatič in vzmetni zatič - Mere in zahteve

General Information

• Status: Published
• Publication Date: 08-Sep-1993
• ICS: 65.060.01 - Agricultural machines and equipment in general
• Technical Committee: ISO/TC 23/SC 4 - Tractors
• Drafting Committee: ISO/TC 23/SC 4 - Tractors
• Current Stage: 9093 - International Standard confirmed
• Start Date: 05-Aug-2022
• Completion Date: 14-Feb-2026
• Ref Project: SIST ISO 7072:1995 - Tractors and machinery for agriculture and forestry -- Linch pins and spring pins -- Dimensions and requirements

Relations

• Revises: ISO 7072:1982 - Agricultural wheeled tractors — Three-point-linkage — Linch pins — Dimensions
• Effective Date: 15-Apr-2008

Overview

ISO 7072:1993 specifies the dimensions and requirements for linch pins and spring pins used in tractors and machinery for agriculture and forestry. These pins are fundamental components for the three-point hitch system and are widely used for fastening purposes in various agricultural and forestry equipment. This standard ensures compatibility, safety, and reliability across different models and manufacturers, supporting the efficiency and safety of farm operations worldwide.

Key Topics

• Scope of Application: The standard applies to linch pins and spring pins designed for three-point hitch mechanisms and general fastening in agricultural and forestry machinery.
• Dimensional Requirements: ISO 7072:1993 establishes precise dimension standards for linch pins and spring pins to facilitate interchangeability.
• Material Strength: The standard requires materials with high tensile strength and ductility to withstand operational stresses.
• Anti-corrosive Treatment: Specifies the importance of agreed anti-corrosive finishes to extend product life in harsh agricultural environments.
• Spring-Retaining Devices: Sets minimum requirements for the design and performance of spring-retaining mechanisms.
• Durability: Pins must withstand repeated use (over 10,000 operations) without significant loss of pre-stress or performance, ensuring long-lasting reliability.

Applications

Linch pins and spring pins are critical for:

• Three-Point Hitch Systems: Ensuring secure and stable connections between tractors and mounted implements, essential for safe operation and quick implement changes.
• Fastening of Agricultural Equipment: Used across various machinery, including trailers, cultivators, and plows, to secure moving or detachable parts.
• Forestry Machinery: Provides fastening solutions in demanding environments where equipment reliability is crucial.
• Maintenance and Repair: Standardized pins facilitate easy replacement and maintenance, reducing downtime for agricultural operations.
• International Compatibility: Adherence to ISO 7072:1993 ensures that equipment and spare parts sourced worldwide will be compatible and meet expected performance and safety standards.

Related Standards

For comprehensive equipment design and maintenance, the following standards and resources are relevant:

• ISO 683-14:1992: Essential for material specifications of spring pins, outlining requirements for heat-treatable steels and alloy steels used in spring applications.
• ISO 730: Pertains to three-point linkage systems for agricultural tractors, closely related to the use of linch pins described in ISO 7072.
• ISO 5678: Covers drawbars and hitching devices for agricultural and forestry tractors.
• ISO 23206: Details requirements for ball ends used in three-point linkage, complementing linch pin standards.

Practical Value

Implementation of ISO 7072:1993 strengthens equipment performance and operator safety by standardizing linch pin and spring pin dimensions and requirements. Manufacturers and equipment users benefit from:

• Enhanced Safety: Consistent pin design reduces the risk of accidental disengagement, protecting both equipment and operators during use.
• Simplified Maintenance: Standard dimensions mean easier access to replacement parts, lowering inventory costs and speeding up repairs.
• Increased Reliability: Materials and treatment requirements ensure pins operate in tough conditions without premature wear or failure.
• Global Interchangeability: Ensures that manufacturers, suppliers, and farmers can rely on compatible components regardless of origin, supporting global supply chains.

ISO 7072:1993 is essential for anyone involved in the design, production, maintenance, or operation of agricultural and forestry machinery relying on linch pins and spring pins. Adopting this standard promotes safety, durability, and international compatibility in agricultural equipment.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-1995
7UDNWRUNPHWLMVNLLQJR]GDUVNLVWURML9DUQRVWQL]DWLþLQY]PHWQL]DWLþ0HUHLQ
]DKWHYH
Tractors and machinery for agriculture and forestry -- Linch pins and spring pins --
Dimensions and requirements
Tracteurs et matériels agricoles et forestiers -- Goupilles à abattant et goupilles-ressorts -
- Dimensions et exigences
Ta slovenski standard je istoveten z: ISO 7072:1993
ICS:
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
Is0
STANDARD 7072
Second edition
1993-09-15
Tractors and machinery for agriculture and
- Linch pins and spring pins -
forestry
Dimensions and requirements
Tracteurs et matkiels agricoles et forestiers - Goupilles ZI abattant et
- Dimensions et exigences
goupilles-ressorts
Reference number
IS0 7072:1993(E)
IS0 7072:1993(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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. IS0
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 IS0 7072 was prepared by Technical Committee
ISOnC 23, Tractors and machinery for agriculture and forestry, Sub-
Committee SC 5, Equipment for working the soil.
This second edition cancels and replaces the first edition
(IS0 7072:1982), which has been extended to include spring pins, and
requirements for both pins.
0 IS0 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronic or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
INTERNATIONAL STANDARD IS0 7072:1993(E)
Tractors and machinery for agriculture and forestry -
Dimensions and
Linch pins and spring pins -
requirements
3.2 Requirements
1 Scope
The material of linch pins shall have a tensile strength
This International Standard specifies the dimensions
of at least 500 N/mm*,
...

INTERNATIONAL
Is0
STANDARD 7072
Second edition
1993-09-15
Tractors and machinery for agriculture and
- Linch pins and spring pins -
forestry
Dimensions and requirements
Tracteurs et matkiels agricoles et forestiers - Goupilles ZI abattant et
- Dimensions et exigences
goupilles-ressorts
Reference number
IS0 7072:1993(E)
IS0 7072:1993(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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. IS0
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 IS0 7072 was prepared by Technical Committee
ISOnC 23, Tractors and machinery for agriculture and forestry, Sub-
Committee SC 5, Equipment for working the soil.
This second edition cancels and replaces the first edition
(IS0 7072:1982), which has been extended to include spring pins, and
requirements for both pins.
0 IS0 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or
by any means, electronic or mechanical, including photocopying and microfilm, without per-
mission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
INTERNATIONAL STANDARD IS0 7072:1993(E)
Tractors and machinery for agriculture and forestry -
Dimensions and
Linch pins and spring pins -
requirements
3.2 Requirements
1 Scope
The material of linch pins shall have a tensile strength
This International Standard specifies the dimensions
of at least 500 N/mm*, and be so chosen that a linch
and certain requirements for linch pins and spring
pin can be bent 30” against a 5 mm radius without
pins, which are used for the three-point hitch and for
showing any cracks (see figure2).
numerous fastening purposes in farm work and agri-
cultural equipment.
F, of the spring-retaining device
The pre-stress,
shown in figure 1 shall be 20 N to 30 N. The spring-
2 Normative reference
retaining device shall withstand being opened
10 000 times without a noticeable reduction in pre-
The following standard contains provisions which,
stress.
through reference in this text, consti
...

NORME ISO
INTERNATIONALE
Deuxième édition
1993-09-l 5
Tracteurs et matériels agricoles et
- Goupilles à abattant et
forestiers
goupilles-ressorts - Dimensions et
exigences
Tractors and machinery for agriculture and forestry - Linch pins and
- Dimensions and requiremen ts
spring pins
Numéro de référence
ISO 7072: 1993(F)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une féderation
mondiale d’organismes nationaux de normalisation (comités membres de
I’ISO). L’élaboration des Normes internationales est en général confiee aux
comites techniques de I’ISO. Chaque comite membre inter-es& par une
étude a le droit de faire partie du comité technique crée à cet effet. Les
organisations internationales, gouvernementales et non gouvernemen-
tales, en liaison avec I’ISO participent également aux travaux. L’ISO colla-
bore étroitement avec la Commission électrotechnique internationale (CEI)
en ce qui concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptes par les comités techniques
sont soumis aux comités membres pour vote. Leur publication comme
Normes internationales requiert l’approbation de 75 % au moins des co-
mités membres votants.
La Norme internationale ISO 7072 a éte elaborée par le comité technique
lSO/TC 23, Tracteurs et matbriels agricoles et forestiers, sous-comité SC
5, Matbiel de travail du sol.
Cette deuxième édition annule et remplace la première édition
(ISO 7072:1982), qui a été étendue aux goupilles-ressorts et inclut des
exigences pour chacun des deux types.
0 ISO 1993
Droits de reproduction réserves. Aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie et les microfilms, sans l’accord écrit de l’éditeur.
Organisation internationale de normalisation
Case Postale 56 l CH-121 1 Geneve 20 l Suisse
Imprimé en Suisse
ii
NORME INTERNATIONALE
Tracteurs et matériels agricoles et forestiers -
Goupilles à abattant et goupilles-ressorts -
Dimensions et exigences
3.2 Exigences
1 Domaine d’application
Le matériau de la goupille doit avoir une résistance a
La présente Norme internationale prescrit les dimen-
la traction d’au moins 500 N/mm*, et doit être choisi
sions et certaines exigences pour les goupilles à
de façon que la goupille puisse être courbée de 30”
abattant et les goupilles-ressorts qui s’emploient dans
contre un rayon de 5 mm sans présenter de fente
les attelages trois points et dans de nombreux élé-
ments de fixation pour les travaux et matériels agri- (voir figure 2).
coles.
La tension préliminaire, F, du dispositif de retenue a
ressort (voir figure 1) doit être de 20 N à 30 N. Le
2 Référence normative
dispositif à ressort doit supporter 10 000 ouvertures
sans réduction notable de la tension préliminaire.
La norme suivante contient des dispositions qui, par
suite de la référence qui en est faite, constituent des
Tout t
...

NORME ISO
INTERNATIONALE
Deuxième édition
1993-09-l 5
Tracteurs et matériels agricoles et
- Goupilles à abattant et
forestiers
goupilles-ressorts - Dimensions et
exigences
Tractors and machinery for agriculture and forestry - Linch pins and
- Dimensions and requiremen ts
spring pins
Numéro de référence
ISO 7072: 1993(F)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une féderation
mondiale d’organismes nationaux de normalisation (comités membres de
I’ISO). L’élaboration des Normes internationales est en général confiee aux
comites techniques de I’ISO. Chaque comite membre inter-es& par une
étude a le droit de faire partie du comité technique crée à cet effet. Les
organisations internationales, gouvernementales et non gouvernemen-
tales, en liaison avec I’ISO participent également aux travaux. L’ISO colla-
bore étroitement avec la Commission électrotechnique internationale (CEI)
en ce qui concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptes par les comités techniques
sont soumis aux comités membres pour vote. Leur publication comme
Normes internationales requiert l’approbation de 75 % au moins des co-
mités membres votants.
La Norme internationale ISO 7072 a éte elaborée par le comité technique
lSO/TC 23, Tracteurs et matbriels agricoles et forestiers, sous-comité SC
5, Matbiel de travail du sol.
Cette deuxième édition annule et remplace la première édition
(ISO 7072:1982), qui a été étendue aux goupilles-ressorts et inclut des
exigences pour chacun des deux types.
0 ISO 1993
Droits de reproduction réserves. Aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie et les microfilms, sans l’accord écrit de l’éditeur.
Organisation internationale de normalisation
Case Postale 56 l CH-121 1 Geneve 20 l Suisse
Imprimé en Suisse
ii
NORME INTERNATIONALE
Tracteurs et matériels agricoles et forestiers -
Goupilles à abattant et goupilles-ressorts -
Dimensions et exigences
3.2 Exigences
1 Domaine d’application
Le matériau de la goupille doit avoir une résistance a
La présente Norme internationale prescrit les dimen-
la traction d’au moins 500 N/mm*, et doit être choisi
sions et certaines exigences pour les goupilles à
de façon que la goupille puisse être courbée de 30”
abattant et les goupilles-ressorts qui s’emploient dans
contre un rayon de 5 mm sans présenter de fente
les attelages trois points et dans de nombreux élé-
ments de fixation pour les travaux et matériels agri- (voir figure 2).
coles.
La tension préliminaire, F, du dispositif de retenue a
ressort (voir figure 1) doit être de 20 N à 30 N. Le
2 Référence normative
dispositif à ressort doit supporter 10 000 ouvertures
sans réduction notable de la tension préliminaire.
La norme suivante contient des dispositions qui, par
suite de la référence qui en est faite, constituent des
Tout t
...