SIST EN 16241:2014+A1:2017
(Main)Railway applications - Slack adjuster
Railway applications - Slack adjuster
This European Standard establishes general principles for designing, manufacturing and type testing slack adjusters.
NOTE 1 These requirements cannot be written in sufficient detail to ensure good workmanship or proper construction. Each manufacturer is therefore responsible for taking every necessary step to make sure that the quality of workmanship and construction is such as to ensure accordance with good engineering practice.
It is applicable to double acting slack adjusters designed to control the block (shoe) to tread (wheel) clearance of tread braked vehicles with conventional brake cylinders and rigging, without taking the track-gauge into consideration.
NOTE 2 The term used for this device by UIC is "Brake rigging adjuster".
Bahnanwendungen - Gestängesteller
Diese Europäische Norm enthält grundlegende Anforderungen an die Konstruktion, Fertigung und Typprüfungen von Gestängestellern.
ANMERKUNG 1 Diese Anforderungen können nicht so detailliert beschrieben werden, dass eine gute Bearbeitung oder fachgerechte Herstellung sichergestellt ist. Jeder Lieferant ist deshalb dafür verantwortlich, jeden notwendigen Schritt zu unternehmen, um die Qualität der Bearbeitung und Herstellung in Übereinstimmung mit allgemein anerkannten Regeln der Technik sicherzustellen.
Diese Europäische Norm gilt für in beide Richtungen wirkende Gestängesteller zur Aufrechterhaltung des Spiels zwischen Bremsklotzsohle und der Lauffläche des Rades von klotzgebremsten Fahrzeugen mit konventionellen Bremszylindern und -gestänge, ungeachtet der Spurweite.
ANMERKUNG 2 Der bei der UIC für diese Vorrichtung verwendete Begriff lautet "Bremsgestängesteller".
Applications ferroviaires - Régleur de timonerie
La présente norme européenne établit les principes généraux pour la conception, la fabrication et les essais de type des régleurs de timoneries.
NOTE 1 Ces exigences ne peuvent être décrites de façon suffisamment détaillée pour garantir une bonne qualité d'exécution ou une fabrication correcte. Chaque fabricant a, par conséquent, la responsabilité de prendre toutes les mesures nécessaires pour s’assurer que la qualité d'exécution et la fabrication soient conformes aux règles de l’art.
Le présent document s'applique aux régleurs de timonerie à double effet conçus pour maintenir automatiquement à une valeur constante le jeu entre la semelle (sabot) et le bandage (roue) des véhicules dotés de freins à sabot avec cylindre et timonerie de frein conventionnels, quel que soit l'écartement des voies.
NOTE 2 Le terme utilisé pour cet appareil par l'UIC est " régleurs de timoneries de frein".
Železniške naprave - Regulator zavornega vzvodja
Ta evropski standard vzpostavlja splošna načela za oblikovanje, izdelavo in tipsko preskušanje regulatorjev zavornega vzvodja.
OPOMBA 1: teh zahtev ni mogoče napisati dovolj podrobno, da se zagotovi dobro kakovost izvedbe ali pravilno izdelavo. Zato je vsak proizvajalec odgovoren za sprejetje vseh potrebnih ukrepov, da se zagotovi kakovost izvedbe in izdelave, ki je v skladu z dobro inženirsko prakso.
Uporablja se za dvojno delujoče regulatorje zavornega vzvodja, ki so zasnovani za nadzor prostora med ploščico (okovje) in tekalnim profilom (kolo) na vozilih z zaviranjem prek tekalnega profila z običajnimi zavornimi cilindri in drogovjem, brez upoštevanja profilnih tirnic.
OPOMBA 2: izraz, ki ga za to napravo uporablja Mednarodna železniška zveza (UIC), je »regulator zavornega drogovja«.
General Information
Relations
Overview
EN 16241:2014+A1:2016 (CEN) defines general principles for the design, manufacture and type‑testing of slack adjusters used on railway vehicles. It applies to double‑acting slack adjusters that control the block (shoe) to tread (wheel) clearance on tread‑braked vehicles with conventional brake cylinders and rigging. (UIC terminology: “Brake rigging adjuster”.) The standard supports conformity with EU Directive 2008/57/EC and provides requirements and test methods to demonstrate reliable operation in service.
Key topics and technical requirements
- Function and scope
- Maintains block‑to‑tread clearance; applicable to exposed or protected mountings.
- Clearance control
- Slack adjusters must maintain block to tread clearance within ±2 mm.
- Take‑up and pay‑out behaviour
- Take up: excessive clearance must be taken up in no more than 3 brake cycles.
- Pay out: restore clearance when insufficient, with safeguards to avoid reacting to temporary contamination (ice/snow).
- Shock and vibration
- Must resist unwanted take‑up/pay‑out under longitudinal shocks and vibration per EN 61373 (category 2, body‑mounted equipment).
- Existing designs may be accepted with documented 10 years’ service experience (min. 3 operators, ≥500 units each).
- Mechanical envelope and loads
- Space envelopes defined for devices up to 75 kN and for 75–130 kN load capability (dimensional limits and pin sizes).
- Slack adjuster must not absorb more than 2 kN of the brake application force.
- Service life and testing
- Life test across 35 kN to the maximum rated load and full adjustment range to verify operational life and maintenance intervals.
- Operation at extreme temperatures: −40 °C to +70 °C.
- Type testing procedures: sampling, dimensional/physical checks, operational tests, extreme temperature tests, maximum load absorption, life cycle testing.
- Marking, designation and in‑service assessment
- Requirements for identification, routine tests and in‑service trials (informative annex).
Applications and who uses this standard
EN 16241 is essential for:
- Brake component manufacturers designing or producing slack adjusters.
- Rolling stock designers and integrators specifying brake rigging components.
- Test laboratories and certification bodies performing type approval and routine tests.
- Railway operators and maintenance teams assessing in‑service performance, retrofit compatibility and procurement compliance. Practical uses include writing technical specifications, performing type testing, demonstrating conformity for vehicle acceptance, and defining maintenance intervals.
Related standards
- EN 61373 - Railway applications: Rolling stock equipment - Shock and vibration tests.
- EN 60721‑3‑5 - Classification of environmental parameters for ground vehicle installations.
- EU Directive 2008/57/EC - Interoperability of the rail system.
Keywords: EN 16241:2014+A1:2016, slack adjuster, railway brake rigging, type testing, block to tread clearance, EN 61373, service life, brake component design.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Železniške naprave - Regulator zavornega vzvodjaBahnanwendungen - GestängestellerApplications ferroviaires - Régleur de timonerieRailway applications - Slack adjuster45.040Materiali in deli za železniško tehnikoMaterials and components for railway engineeringICS:Ta slovenski standard je istoveten z:EN 16241:2014+A1:2016SIST EN 16241:2014+A1:2017en,fr,de01-januar-2017SIST EN 16241:2014+A1:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16241:2014+A1
November
t r s x ICS
v wä r v r Supersedes EN
s x t v sã t r s vEnglish Version
Railway applications æ Slack adjuster Applications ferroviaires æ Régleur de timonerie
Bahnanwendungen æ Gestängesteller This European Standard was approved by CEN on
s x November
t r s u and includes Amendment
s approved by CEN on
z August
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x t v sã t r s v ªA sã t r s x ESIST EN 16241:2014+A1:2017
In-service trial . 17 SIST EN 16241:2014+A1:2017
Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC . 18 Bibliography . 20 SIST EN 16241:2014+A1:2017
Figure 1 4.1.3 Take up Slack adjusters shall take up excessive block to tread clearance in a minimum number of cycles of the brake (application and release), but this shall not be more than 3 cycles. This requirement is tested in accordance with 6.3.3.2. 4.1.4 Pay out Slack adjusters shall pay out, if the block to tread clearance is insufficient, to restore the correct block to tread clearance. This situation may come about due to a change in the vehicles laden state. This pay out shall not increase the distance between brake block and wheel when releasing after the first brake application when the insufficient block to tread clearance is detected, but only after the release following the second brake application if the distance remains insufficient. This is to prevent the clearance being increased due to the presence of ice, snow or other foreign bodies. This requirement is tested in accordance with 6.3.3.3. SIST EN 16241:2014+A1:2017
Key * Length adjusted to the vehicle C Measurement mark G 36 mm pin diameter Pins shall be a case hardened steel where Rm is greater or equal to 370 N/mm2 NOTE Rm is the tensile strength of the steel. K 83 mm Slack Adjuster type 1 2 L Length 2 325 mm 1 875 mm M Take up 580 mm 440 mm 1 Alternative attachment arrangements for the brake rigging (XX) Figures in brackets ( ) are nominal values. Figure 2 — Space envelope – loads (forces) up to 75 kN SIST EN 16241:2014+A1:2017
Key * Length adjusted to the vehicle C Measurement mark G 40 mm pin diameter Pins shall be a case hardened steel where Rm is greater or equal to 370 N/mm2 NOTE Rm is the tensile strength of the steel. K 83 mm Slack Adjuster type 1 2 3 L Length 2 390 mm 1 940 mm 1 640 mm M Take up 580 mm 440 mm 280 mm 1 Alternative attachment arrangements for the brake rigging (XX) Figures in brackets ( ) are nominal values. Figure 3 — Space envelope – loads (forces) from 75 kN to 130 kN 4.1.7 Maximum load absorption The slack adjuster shall not absorb more than 2 kN of the brake application force. This requirement is tested in accordance with 6.3.5. 4.2 Service life A life test shall be carried out on the slack adjuster to demonstrate it is fit for service on railway vehicles and to verify the maintenance requirements for the operational design life so these can be taken into SIST EN 16241:2014+A1:2017
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Frequently Asked Questions
SIST EN 16241:2014+A1:2017 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Railway applications - Slack adjuster". This standard covers: This European Standard establishes general principles for designing, manufacturing and type testing slack adjusters. NOTE 1 These requirements cannot be written in sufficient detail to ensure good workmanship or proper construction. Each manufacturer is therefore responsible for taking every necessary step to make sure that the quality of workmanship and construction is such as to ensure accordance with good engineering practice. It is applicable to double acting slack adjusters designed to control the block (shoe) to tread (wheel) clearance of tread braked vehicles with conventional brake cylinders and rigging, without taking the track-gauge into consideration. NOTE 2 The term used for this device by UIC is "Brake rigging adjuster".
This European Standard establishes general principles for designing, manufacturing and type testing slack adjusters. NOTE 1 These requirements cannot be written in sufficient detail to ensure good workmanship or proper construction. Each manufacturer is therefore responsible for taking every necessary step to make sure that the quality of workmanship and construction is such as to ensure accordance with good engineering practice. It is applicable to double acting slack adjusters designed to control the block (shoe) to tread (wheel) clearance of tread braked vehicles with conventional brake cylinders and rigging, without taking the track-gauge into consideration. NOTE 2 The term used for this device by UIC is "Brake rigging adjuster".
SIST EN 16241:2014+A1:2017 is classified under the following ICS (International Classification for Standards) categories: 45.040 - Materials and components for railway engineering. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 16241:2014+A1:2017 has the following relationships with other standards: It is inter standard links to SIST EN 16241:2014/kFprA1:2016, SIST EN 16241:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 16241:2014+A1:2017 is associated with the following European legislation: EU Directives/Regulations: 2008/57/EC, 2016/797/EU; Standardization Mandates: M/483. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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記事タイトル：SIST EN 16241：2014+A1：2017 - 鉄道応用 - スラックアジャスター 記事内容：この欧州規格は、スラックアジャスターの設計、製造、型式試験に関する一般的な原則を確立します。 注１：これらの要件は、適切な職人技や適切な構造を確保するために十分な詳細で記述することはできません。したがって、各メーカーは、職人技や構造の品質がエンジニアリングのベストプラクティスに合致していることを確保するために必要なすべての手段を講じる責任があります。 これは、トラックゲージを考慮せずに従来のブレーキシリンダーとリギングを備えたトレッドブレーキ車両のブロック（シュー）とトレッド（ホイール）の間の隙間を制御するために設計されたダブルアクションスラックアジャスターに適用されます。 注２：UICはこのデバイスを「ブレーキリギングアジャスター」と呼んでいます。
記事のタイトル：SIST EN 16241:2014+A1:2017 - 鉄道応用 - スラック調整器 記事の内容：この欧州標準は、スラック調整器の設計、製造、タイプテストのための一般的な原則を確立しています。 注1：これらの要件は、良好な作業マナーや適切な構造を確保するために十分な詳細で記述されることはできません。そのため、各メーカーは、工作品や構造の品質が適切な工学的方法に一致することを確保するために必要な手順を講じる責任を負います。 これは通常のブレーキシリンダーとリギングを持つトレッドブレーキ車両のブロック（シュー）とトレッド（ホイール）のクリアランスを制御するために設計されたダブルアクチングスラック調整器に適用されます。トラックゲージは考慮されません。 注2：UICはこの装置を「ブレーキリギング調整器」と呼んでいます。
The article discusses the European Standard EN 16241:2014+A1:2017, which outlines guidelines for designing, manufacturing, and type testing slack adjusters used in railway applications. It states that the requirements in the standard may not provide sufficient detail to ensure proper construction, so manufacturers are responsible for ensuring the quality of workmanship aligns with engineering best practices. The standard applies to double acting slack adjusters used to control the clearance between the block (shoe) and tread (wheel) of tread braked vehicles with conventional brake cylinders and rigging, without considering the track-gauge. The article also mentions that the UIC refers to this device as a "Brake rigging adjuster."
기사 제목: SIST EN 16241:2014+A1:2017 - 철도 응용 분야 - 슬랙 어저스터 기사 내용: 이 유럽 표준은 슬랙 어저스터의 설계, 제조, 유형 시험에 대한 일반 원칙을 제정한다. 참고 1 이 요구 사항은 충분한 세부 정보를 제공하지 못하므로 양질의 공사 또는 적절한 구조를 보장하기 위해 각 제조업체는 요구 사항을 준수하는 엔지니어링의 실천과 일치하도록 필요한 모든 조치를 취할 책임이 있다. 이는 트랙 게이지를 고려하지 않고 일반적인 브레이크 실린더와 리깅을 갖춘 트레드 브레이크 차량의 블록 (슈)에서 트레드 (바퀴) 간 여유를 제어하기 위해 설계된 이중 작동 슬랙 어저스터에 적용된다. 참고 2 UIC는이 장치를 "브레이크 리깅 어저스터"로 부른다.
기사 제목: SIST EN 16241:2014+A1:2017 - 철도 응용 - 슬랙 어저스터 기사 내용: 이 유럽 표준은 슬랙 어저스터의 디자인, 제조 및 유형 시험에 대한 일반적인 원칙을 제정합니다. 참고 1 - 이러한 요구 사항은 좋은 기술로의 준수를 보장하기 위해 충분한 세부 사항으로 기술할 수 없습니다. 따라서 각 제조업체는 제품의 성능과 건설 품질이 좋은 엔지니어링 시행에 부합하도록 하기 위해 필요한 모든 조치를 취할 책임이 있습니다. 이 표준은 트랙 게이지를 고려하지 않고 일반적인 브레이크 실린더와 장비를 가진 브레이크 차량의 블록(슈)과 트레드(바퀴) 간격을 제어하기 위해 설계된 이중 작동 슬랙 어저스터에 적용됩니다. 참고 2 - UIC에서는 이 장치를 "브레이크 장비 조절기"라고 부릅니다.
The European Standard SIST EN 16241:2014+A1:2017 defines general principles for the design, manufacture, and type testing of slack adjusters. It states that these requirements cannot cover every detail to ensure good workmanship or construction, so manufacturers are responsible for ensuring the quality of their products. This standard applies to double acting slack adjusters that control the block (shoe) to tread (wheel) clearance of tread braked vehicles with conventional brake cylinders and rigging, without considering the track-gauge. The UIC refers to this device as a "Brake rigging adjuster."
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