1、September 2016 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.100.40!%3e“2561666www.din.d
2、eDIN EN 857Rubber hoses and hose assemblies Wire braid reinforced compact type for hydraulic applications Specification;English version EN 857:2015,English translation of DIN EN 857:2016-09Gummischluche und schlauchleitungen Kompakthydraulikschluche mit Drahtgeflechteinlage Spezifikation;Englische F
3、assung EN 857:2015,Englische bersetzung von DIN EN 857:2016-09Tuyaux et flexibles en caoutchouc Type hydraulique compact avec armature de fils mtalliques Spcification;Version anglaise EN 857:2015,Traduction anglaise de DIN EN 857:2016-09SupersedesDIN EN 857:199702www.beuth.deDocument comprises 20 pa
4、gesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.09.16 DIN EN 857:2016-09 2 A comma is used as the decimal marker. National foreword This document (EN 857:2015) has been prepared by Technical Committee CEN/TC 218 “Rubber and plast
5、ics hoses and hose assemblies” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was DIN-Normenausschuss Elastomer-Technik (DIN Standards Committee Elastomer Technology), Working Committee NA 045-02-12 AA Gummi- und Kunststoffschluche sowie Schlauchleitungen
6、 (Spiegelgremium zu CEN/TC 218, ISO/TC 45/SC 1). NOTE Requirements for hydraulic hoses for underground mining are dealt with in separate standards. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1817:2005 DIN ISO 1817:2008-08 ISO 23529
7、 DIN ISO 23529 Amendments This standard differs from DIN EN 857:1997-02 as follows: a) the standard has been technically and editorially revised; b) normative references have been updated; c) in Subclause 5.1, Table 1, the tolerances for inside diameters have been updated; d) in Subclause 6.8, detai
8、ls of abrasion resistance testing have been modified due to the withdrawal of ISO 6945; e) a new normative Annex A has been added; f) a new normative Annex B has been added; g) a new informative Annex C has been added. Previous editions DIN EN 857: 1997-02 DIN EN 857:2016-09 3 National Annex NA (inf
9、ormative) Bibliography DIN ISO 1817:2008-08, Rubber, vulcanized Determination of the effect of liquids (ISO 1817:2005) DIN ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods DIN EN 857:2016-09 4 This page is intentionally blank EUROPEAN STANDARD
10、 NORME EUROPENNE EUROPISCHE NORM EN 857 April 2015 ICS 23.100.40 Supersedes EN 857:1996English Version Rubber hoses and hose assemblies - Wire braid reinforced compact type for hydraulic applications - Specification Tuyaux et flexibles en caoutchouc - Type hydraulique compact avec armature de fils m
11、talliques - Spcification Gummischluche und -schlauchleitungen - Kompakthydraulikschluche mit Drahtgeflechteinlage - Spezifikation This European Standard was approved by CEN on 31 January 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions fo
12、r giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in thre
13、e official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bod
14、ies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, S
15、pain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldw
16、ide for CEN national Members. Ref. No. EN 857:2015 EEN 857:2015 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Types of hoses .5 4 Materials and construction .5 4.1 Hoses 5 4.2 Hose assemblies 5 5 Dimensions .5 5.1 Diameters and concentricity .5 5.2 Length .6 5.2.1 Hoses 6 5.2.2
17、 Hose assemblies 6 6 Requirements .7 6.1 Hydrostatic requirements .7 6.2 Minimum bend radius 7 6.3 Impulse test requirements 8 6.4 Leakage of hose assemblies 8 6.5 Cold flexibility 8 6.6 Adhesion between components .8 6.7 Vacuum resistance 8 6.8 Abrasion resistance 9 6.9 Fluid resistance9 6.9.1 Test
18、 pieces .9 6.9.2 Oil resistance .9 6.9.3 Water based fluid resistance 9 6.9.4 Water resistance . 10 6.10 Ozone resistance 10 7 Designation . 10 8 Marking 10 8.1 Hoses . 10 8.2 Hose assemblies . 10 Annex A (normative) Procedure for the measurement of abrasion 11 A.1 Apparatus 11 A.2 Method . 12 A.3 T
19、est pieces 12 A.4 Condition of test pieces . 12 A.5 Procedure 13 A.6 Expression of results . 13 A.7 Test report . 13 Annex B (normative) Type and routine testing of production hoses . 15 Annex C (informative) Production acceptance testing . 16 DIN EN 857:2016-09 EN 857:2015 (E) 3 Foreword This docum
20、ent (EN 857:2015) has been prepared by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at th
21、e latest by October 2015 and conflicting national standards shall be withdrawn at the latest by October 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or
22、all such patent rights. This document supersedes EN 857:1996. In comparison with EN 857:1996, the following significant changes have been made: updated normative references; tolerances for inside diameter in Table 1; added Annex A; added Annex B; added Annex C. According to the CEN-CENELEC Internal
23、Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irelan
24、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 857:2016-09 EN 857:2015 (E) 4 1 Scope This European Standard specifies requirements for two types of wire braid reinfo
25、rced compact hoses and hose assemblies of nominal bore from 6 to 25, types 1SC and 2SC. They are suitable for use with: hydraulic fluids in accordance with ISO 6743-4 with the exception of HFD R, HFD S and HFD T at temperatures ranging from -40 C to +100 C; water based fluids at temperatures ranging
26、 from -40 C to +70 C; water at temperatures ranging from 0 C to +70 C. This European Standard does not include requirements for end fittings. It is limited to the performance of hoses and hose assemblies. NOTE 1 The hoses are not suitable for use with castor oil based nor ester based fluids. NOTE 2
27、Hoses and hose assemblies are not be operated outside the limits of this standard. NOTE 3 Requirements for hydraulic hoses for underground mining are standardised in separate standards. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document a
28、nd are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 1302, Geometrical Product Specifications (GPS) - Indication of surface texture in technical
29、 product documentation (ISO 1302) EN ISO 1402:2009, Rubber and plastics hoses and hose assemblies - Hydrostatic testing (ISO 1402:2009) EN ISO 4671, Rubber and plastics hoses and hose assemblies - Methods of measurement of the dimensions of hoses and the lengths of hose assemblies (ISO 4671) EN ISO
30、6743-4, Lubricants, industrial oils and related products (class L) - Classification - Part 4: Family H (Hydraulic systems) (ISO 6743-4) EN ISO 6803, Rubber or plastics hoses and hose assemblies - Hydraulic-pressure impulse test without flexing (ISO 6803) EN ISO 7233, Rubber and plastics hoses and ho
31、se assemblies - Determination of resistance to vacuum (ISO 7233) EN ISO 7326, Rubber and plastics hoses - Assessment of ozone resistance under static conditions (ISO 7326) EN ISO 8033:2006, Rubber and plastics hoses - Determination of adhesion between components (ISO 8033:2006) EN ISO 10619-2, Rubbe
32、r and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2: Bending tests at sub-ambient temperatures (ISO 10619-2) DIN EN 857:2016-09 EN 857:2015 (E) 5 ISO 1817:2005, Rubber, vulcanized - Determination of the effect of liquids ISO 23529, Rubber - General procedures for prep
33、aring and conditioning test pieces for physical test methods 3 Types of hoses Two types of hoses are specified: 1) type 1SC hoses with a single braid of wire reinforcement; 2) type 2SC hoses with two braids of wire reinforcement. 4 Materials and construction 4.1 Hoses Hoses shall consist of an oil a
34、nd water resistant synthetic rubber lining, one or two layers of high tensile steel wire and an oil and weather resistant synthetic rubber cover. 4.2 Hose assemblies Hose assemblies shall only be manufactured with those hose fittings whose functionality has been verified in accordance with subclause
35、s 6.1, 6.3, 6.4 and 6.5 of this European Standard. 5 Dimensions 5.1 Diameters and concentricity When measured in accordance with EN ISO 4671, the diameters of the hoses shall conform to the values given in Table 1. Table 1 Diameters of hoses Dimensions in millimetres, except nominal bore Nominal bor
36、e All types Type 1SC Type 2SC Inside diameter Diameter over reinforcement Outside diameter of hose Diameter over reinforcement Outside diameter of hose min. max. min. max. max. min. max. max. 6 6,4 6,9 9,6 10,8 13,5 10,6 11,7 14,2 8 7,9 8,5 10,9 12,1 14,5 12,1 13,3 16,0 10 9,5 10,1 12,7 14,5 16,9 14
37、,4 15,6 18,3 12 12,7 13,5 15,9 18,1 20,4 17,5 19,1 21,5 16 15,8 16,7 19,8 21,0 23,0 20,5 22,3 24,7 19 18,8 19,8 23,2 24,4 26,7 24,6 26,4 28,6 25 25,4 26,4 30,7 31,9 34,9 32,5 34,3 36,6 DIN EN 857:2016-09 EN 857:2015 (E) 6 When measured in accordance with EN ISO 4671, the concentricity of the hoses s
38、hall conform to the values given in Table 2. Table 2 Concentricity of hoses Dimensions in millimetres, except nominal bore Nominal bore Maximum variation in wall thickness Between inside diameter and outside diameter Between inside diameter and reinforcement diameter 6 0,8 0,4 Over 6 and including 1
39、9 1,0 0,6 Over 19 1,3 0,8 5.2 Length 5.2.1 Hoses Hoses shall be supplied in lengths as specified by the purchaser, subject to a tolerance on the specified lengths of 2 %. When no specific hose lengths have been ordered, the percentages of different lengths in any given delivery shall be as follows:
40、over 20 m : not less than 80 % of total length; over 10 m, up to and including 20 m : not more than 20 % of total length; 1 m, up to and including 10 m : not more than 3 % of total length. The length of hose shall be at least 1 m. 5.2.2 Hose assemblies The tolerances on the length of hose assemblies
41、 shall conform to the values given in Table 3. Table 3 Tolerances of length of hose assemblies Hose assembly length mm Tolerances Up to and including 630 + 7 mm 3 mm Over 630, up to and including 1 250 + 12 mm 4 mm Over 1 250, up to and including 2 500 + 20 mm 6 mm Over 2 500, up to and including 8
42、000 + 1,5 % 0,5 % Over 8 000 + 3 % 1 % DIN EN 857:2016-09 EN 857:2015 (E) 7 6 Requirements 6.1 Hydrostatic requirements 6.1.1 When tested in accordance with EN ISO 1402, the maximum working pressure, the proof pressure and burst pressure of the hoses and hose assemblies shall conform to the values g
43、iven in Table 4. Table 4 Maximum working pressure, proof pressure and burst pressure Nominal bore Maximum working pressure bar aProof pressure bar Burst pressure bar Type Type Type 1SC 2SC 1SC 2SC 1SC 2SC 6 225 400 450 800 900 1 600 8 215 350 430 700 860 1 400 10 180 330 360 660 720 1 320 12 160 275
44、 320 550 640 1 100 16 130 250 260 500 520 1 000 19 105 215 210 430 420 860 25 88 165 176 330 352 660 a1 bar = 0,1 MPa. 6.1.2 When tested in accordance with EN ISO 1402, the change in length of hose at the maximum working pressure shall not exceed +2 % to -4 %. 6.2 Minimum bend radius When bent to th
45、e minimum bend radius given in Table 5, measured on the inside of the bend, the flatness shall not exceed 10 % of the original outside diameter. Measure the hose outside diameter with a calliper before bending the hose. Bend the hose to the minimum bend radius and measure the flatness with the calli
46、per. Table 5 Minimum bend radius Nominal bore Minimum bend radius mm Type 1SC Type 2SC 6 75 75 8 85 85 10 90 90 12 130 130 16 150 170 19 180 200 25 230 250 DIN EN 857:2016-09 EN 857:2015 (E) 8 6.3 Impulse test requirements 6.3.1 The impulse test shall be in accordance with EN ISO 6803. The test temp
47、erature shall be 100 C. 6.3.2 For type 1SC hose, when tested at impulse pressure equal to 125 % of the maximum working pressure, the hose shall withstand a minimum of 150 000 impulse cycles. For type 2SC hose, when tested at impulse pressure equal to 133 % of the maximum working pressure, the hose s
48、hall withstand a minimum of 200 000 impulse cycles. 6.3.3 There shall be no leakage or other malfunction before reaching the specified number of cycles. 6.3.4 This test shall be considered a destructive test and the test piece shall be disposed of in accordance with local environmental guidelines. 6
49、.4 Leakage of hose assemblies When tested in accordance with EN ISO 1402:2009, 8.4, there shall be no leakage or evidence of failure. This test shall be considered a destructive test and the test piece shall be disposed of in accordance with local environmental guidelines. 6.5 Cold flexibility When tested in accordance with Method B of EN ISO 10619-2 at a temperature of -40 C there shall be no cracking of the lining or
