1、BRITISH STANDARDBS EN 14865-2:2006Railway applications Axlebox lubricating greases Part 2: Method to test the mechanical stability to cover vehicle speeds up to 200 km/hICS 45.040; 75.100g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g
2、55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58+A2:2010 National forewordThis British Standard is the UK implementation of EN 14865-2:2006+A2:2010. It supersedes BS EN 14865-2:2006+A1:2009 which is withdrawn.The start and finish of text introduced or altered b
3、y amendment is in-dicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“.The UK participation in its preparation was entrusted by Technical Committee RAE/3, Railway applications Rolling
4、stock material, to Subcommittee RAE/3/-/2, Railway applications Rolling bearings and lubricants.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are resp
5、onsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 14865-2:2006+A2:2010This British Standard was published under the authority of the Standards Policy and Strategy Committee on 17 March 2006 BSI 2011Amendments/corrigenda issued
6、since publicationDate Comments 31 May 2009 Implementation of CEN amendment A1:200931 March 2011 Implementation of CEN amendment A2:2010ISBN 978 0 580 70714 8EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14865-2:2006+A2 October 2010 ICS 45.040; 75.100 Supersedes EN 14865-2:2006+A1:2009English
7、Version Railway applications - Axlebox lubricating greases - Part 2: Method to test the mechanical stability to cover vehicle speeds up to 200 km/h Applications ferroviaires - Graisses lubrifiantes pour botes dessieux - Partie 2: Mthode dessai de stabilit mcanique pour des vitesses de vhicules allan
8、t jusqu 200 km/h Bahnanwendungen - Schmierfette fr Radsatzlager - Teil 2: Prfverfahren fr mechanische Stabilitt bei Schienenfahrzeugen bis zu Geschwindigkeiten von 200 km/h This European Standard was approved by CEN on 9 January 2006 and includes Amendment 1 approved by CEN on 24 February 2009 and A
9、mendment 2 approved by CEN on 14 September 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concer
10、ning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own
11、 language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia
12、, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels
13、 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14865-2:2006+A2:2010: E2 Contents page Foreword 3Introduction .41 Scope 42 Normative references 43 Terms and definitions .44 Testing principle 55 Reagents and materials 56 Appar
14、atus .57 Sampling .58 Testing procedure68.1 General 68.2 Preparation of the apparatus 68.3 Washing procedure .68.4 Assembly of the bearings .68.5 Volume and distribution of the test lubricating grease .68.6 Assembly of the box 68.7 Assembly of the machine .78.8 Calibrating the machine 78.9 Running t
15、he test .88.10 Dismantling the machine after testing 88.11 Disassembly of the bearings 89 Evaluation .99.1 Recording .99.2 Leakage .99.3 Penetration .910 Precision .910.1 General 910.2 Repeatability 1010.3 Reproducibility 1011 Test report . 1112 Other test rig . 11Annex A (normative) V2F test rig .
16、12Annex B (normative) Axlebox . 13Annex C (informative) Round Robin test . 14C.1 Result . 14C.2 Symbols in the Figures C.1 and C.2 14C.3 Test data distribution . 15Annex D (informative) Precision calculation examples 17D.1 Repeatability example 17D.2 Reproducibility example 17Annex ZA (informative)
17、#Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)$ 18Bibliography . 20BS EN 14865-2:2006+A2:2010EN 14865-2:2006+
18、A2:2010 (E)3 Foreword This document (EN 14865-2:2006+A2:2010) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by
19、 endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. 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 ide
20、ntifying any or all such patent rights. This document includes Amendment 1, approved by CEN on 2009-02-24 and Amendment 2 approved by CEN on 2010-09-14. This document supersedes !EN 14865-2:2006+A1:2009“. The start and finish of text introduced or altered by amendment is indicated in the text by tag
21、s !“ and # $. #This document has been prepared under a mandate given to CEN/CENELEC/ETSI by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 2008/57/EC. For relationship with EU Directive 2008/57/EC, see informative Annex ZA, which
22、is an integral part of this document.$ EN 14865 consists of the following parts, under the general title Railway applications Axlebox lubricating greases: Part 1: Method to test the ability to lubricate Part 2: Method to test the mechanical stability to cover vehicle speeds up to 200 km/h According
23、to the CEN/CENELEC Internal 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
24、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 14865-2:2006+A2:2010EN 14865-2:2006+A2:2010 (E)4 Introduction A test method is standardized, which is referred to in EN 12081. This European S
25、tandard standardizes a test method and acceptance criteria for the demand in EN 12081 for testing the mechanical stability of axlebox lubricating greases. It addresses the issue of mechanical stability of lubricating greases operating under severe conditions. All lubricants have three main functions
26、 to form a lubricating film that separates rolling elements and raceways, to protect the bearings from corrosion and to give good longevity. For lubricating grease there is a further demand: the product needs to be mechanically stable in use. Currently several common lubricating grease shear stabili
27、ty tests are available to industry, but the procedure in this European Standard is the most severe. It has been available for many years and it is used to discriminate between lubricating greases of different stabilities. 1 Scope This European Standard specifies a test method and sets the acceptance
28、 criteria for the determination of the mechanical stability of lubricating greases intended for the lubrication of axlebox bearings according to EN 12081. In the test, impacts are applied to the lubricating grease so that only very stable lubricating greases will perform acceptably. The method is us
29、ed in a discrimination process for finding lubricating greases of such mechanical stability that they are considered accepted lubricating greases for more extensive performance tests according to EN 12082. For purposes of quality assurance and quality control, this test method is also used for batch
30、 testing of lubricating greases. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amend
31、ments) applies. EN ISO 868, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shore hardness) (ISO 868:2003) EN ISO 3170, Petroleum liquids Manual sampling (ISO 3170:2004) EN ISO 4259:1995, Petroleum products Determination and application of precision data in relati
32、on to methods of test (ISO 4259:1992/Cor 1:1993) ISO 2137:1985, Petroleum products Lubricating grease and petrolatum Determination of cone penetration ISO 5725-6:1994, Accuracy (trueness and precision) of measurement methods and results Part 6: Use in practice of accuracy values 3 Terms and definiti
33、ons For the purposes of this European Standard, the following terms and definitions apply. BS EN 14865-2:2006+A2:2010EN 14865-2:2006+A2:2010 (E)5 3.1 lubricating grease semi-solid product consisting of a mixture of liquid lubricant and thickened with soaps or other thickeners, and may also contain o
34、ther ingredients, imparting special properties (additives) 3.2 lubricating grease mechanical stability resistance to breakdown of the lubricating grease structure under shear, causing the product to become softer 3.3 lifting device hoist, block and tackle suitably supported, a traverse or other devi
35、ce suitable to support and safely manoeuvre the axlebox and its components 4 Testing principle A typical type of railway axlebox with a labyrinth seal and two spherical roller bearings is packed with test lubricating grease. The axlebox axle is first rotated for 72 h at 500 r/min (52,4 rad/s) while
36、the axlebox is subject to vibrational accelerations. The vibration is brought about by hitting the axlebox every second with a hammer with a falling height of 4,5 mm. The second part of the test continues in the same way for another 72 h, but the rotational speed of the axle is increased to 1 000 r/
37、min (104,7 rad/s). The weight of lubricating grease lost from the axlebox is recorded as a measure of mechanical stability. 5 Reagents and materials Use only reagents of recognised analytical grades (e.g. white spirit according to BS 245 specification). 6 Apparatus1)The following V2F test rig and eq
38、uipment are used in the test: a) test rig as described in Annex A and detailed in Annex B; b) lifting device suitable for supporting and manoeuvring the assembled axlebox (approximately 100 kg); c) spatula; d) balance; e) thermocouple. 7 Sampling The following measures shall be taken when taking sam
39、ples: a) unless otherwise specified, samples shall be taken in accordance with one of the procedures specified in EN ISO 3170; b) laboratory samples shall be examined for homogeneity before taking the test portion. NOTE How lubricating grease samples are to be taken after the test procedure is descr
40、ibed in 8.10; 1) Information about suitable equipment is available from SKF Quality Technology Centre, A-4400 Steyr, Austria. BS EN 14865-2:2006+A2:2010EN 14865-2:2006+A2:2010 (E)6 c) samples shall be stored at a temperature between 0 C and 30 C, for at least 24 h, before use. 8 Testing procedure 8.
41、1 General The procedure is described assuming that the apparatus is disassembled. If this is not the case, then disassemble the apparatus and bearings, as described in 8.10 and 8.11, before proceeding. 8.2 Preparation of the apparatus Make sure that the test rig is earthed and that the electrical wi
42、ring is correct. When starting the machine, carefully check that the eccentric cam rotates in the correct direction. 8.3 Washing procedure All parts of the axlebox shall be washed and thoroughly dried before any running test is carried out. White spirit or a similar non-aqueous solvent should be use
43、d for the washing and the parts may be dried using clean and dry compressed air. The bearings shall be disassembled before washing according to the method described in 8.11. 8.4 Assembly of the bearings The rollers shall be placed into the pockets in the two cage halves, with the exception of 12 rol
44、lers, 6 from each side of the bearing, i.e. 3 cage pockets are left empty on each side of each cage half to allow assembly. The cage halves and the guide ring are then placed over the inner ring. The inner ring assembly is fitted into the outer ring and swung out so that it is possible to press the
45、remaining rollers into position. 8.5 Volume and distribution of the test lubricating grease A total volume of 1 370 cm3lubricating grease shall be used for the test and this volume of lubricating grease is split up in 5 portions 132 cm3, 174 cm3, 700 cm3, 174 cm3and 190 cm3. These portions are to be
46、 prepared to an accuracy of 0,5 cm3. If the density of the lubricating grease is known, the weight of the lubricating grease instead of the volume can be used. NOTE Previous trials have proven that following the specified volumes is essential for the accuracy of the testing. 8.6 Assembly of the box
47、The collar shall be pressed on the axle (Figure B.1, key 8). The first bearing (Figure B.1, key 6) is pressed on and the spacing ring (Figure B.1, key 5) mounted. The bearing is filled with 174 cm3lubricating grease. This is done by applying the lubricating grease with a suitable spatula. The outer
48、ring is swung out and about half of the lubricating grease volume is worked between the rollers. With the outer ring swung back into position, the rest of the lubricating grease is applied. The second bearing (Figure B.1, key 4) is then pressed on and 174 cm3lubricating grease is applied in the same
49、 way as described for the first bearing. The fixing plate (Figure B.1, key 3) is placed into position and the bolts drawn tight to keep the bearings in place. BS EN 14865-2:2006+A2:2010EN 14865-2:2006+A2:2010 (E)7 A portion of the lubricating grease, 190 cm3, is placed behind the labyrinth grooves (Figure B.1, lubricating grease portion D). No lubricating grease is placed in the labyrint
