TECHNICAL REPORT Published

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1 TECHNICAL REPORT 3498 Published INTERNATIONAL ORGANIZATION FOR STANDARDIZATION=ME>KC1YHAPOAHAFI OPrAHM3AWR I-Io CTAHAAPTM3A~MM. ORGANISATION I NTERNATIONALE DE NORMALISATION Lubricants, industrial oils and-related products (class L) - Recommendations for the choice of lubricants for machine tools L ubrifian ts, huies industrielles et produits connexes klasse L I - Recommandations pour Ie choix des lubrifiants pour machines- ou tis Dit document mag slechts op een stand-alone PC worden geinstalleerd. Gebruik op een netwerk is alleen. toestaan als een aanvullende licentieovereenkomst voor netwerkgebruik met NEN is afgesloten. This document may only be used on a stand-alone PC. Use in a network is only permitted when a supplementary license agreement for us in a network with NEN has been concluded. 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 repcesented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. The main task of ISO technical committees is to prepare International Standards. In exceptional circumstances a technical committee may propose the publication of a technical report of one of the following types : - type 1, when the necessary support within the technical committee cannot be obtained for the publication of an International Standard, despite repeated efforts; - type 2, when the subject is still under technical development requiring wider exposure; - type 3, when a technical committee has collected data of a different kind from that which is normally published as an International Standard ( state of the art, for example). Technical reports are accepted for publication directly by ISO Council. Technical reports types 1 and 2 are subject to review within three years of publication, to decide if they tan be transformed into International Standards. Technical reports type 3 do not necessarily have to be reviewed until the data they provide is considered no longer valid or useful. ISO/TR 3498 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants. The reasons which led to the decision to publish this document in the form of a technical report type 2 are explained in the Introduction. 0 Introduction Technical Report 3498 replaces ISO , which has become partly outdated. There was a strong feeling in ISO/TC 28 that the document is still temporarily usable in its revised form. As a compromise, it was decided that it should be published as a technical report type 2. UDC : : Ref. No. ISO/TR (E) Descriptors : machine tools, Petroleum products, lubricants, lubricating oils, greases, utilization, instruction. 0 International Organkation for Standardization, 1986 l Printed in Switzerland Price based on 5 pages

2 ISO/TR (El 1 Scope and field of application This Technical Report has been prepared with the following intentions: - to establish a rationalized range of lubricants consisting of products essential for machine tools lubrication. These categories are internationally available and it is among them that machine tool manufacturers should make recommendations; this rationalized range is printed in framed type in the table giving the recommendations for the choice of lubricants for machine tools (clause 4); - to avoid unnecessary restriction on specifications or product descriptions that would inhibit future development. This Technical Report tool manufacturers. is not intended to cover special requirements that should be individually addressed in conjunction with machine This Technical Report completes the rationalized range as defined above with a series of categories of products necessary for some countries according to their needs, though general type in the table in clause 4. they do not have a common interest for every member body. This series is printed In the future, it is intended to progressively reduce this complementary series so as to eliminate it in time. NOTE - Lubrica nts for machine tools must be compatible with the materials used for the ma chine tool Parts, particularly Seals, with which they will be in contact. 2 References ISO 2137, Petroleum products - Lubricating grease - Determha tion of cone pene tra tion. 3 Explanation of Symbols used 3.1 In the column headed Category Symbol ISO-L in the table in clause 4, the various products are designated in an abbreviated form : the complete designation is as shown in the following examples : ISO-L-CKB 32, ISO-L-CKC 68, etc. lt is also permitted to designate a product in the form: L-CKB 32; L-CKC 68, etc. 32. In other respects, in the designation utilized : the prefix letter L designates the class lubricants, industrial oils and related products Case of oils a) the group of letters which follows the letter L, considered as a whole, forms a Code; NOTE - The first letter of this code have no particular significance. identifies the family of the product considered but the second Ietter, when it exists, and any following letters, b) the numerical group designation which appears after each code corresponds to the average kinematic viscosity of the lubricant measured in accordance with ISO 3104 at 40 OC and expressed in millimetres squared per secondl) (see ISO 3448) ) lmm*/s= 1cSt 2

3 ISO/TR (EI Case of greases a) The category, the group of letters which follows the letter the Order in which it is written has a particular signi f icance : L, forms a code constituted by 5 letters each of them and - - the first letter, X, identifies the family of greases; the second letter, B, indicates the lower operating temperature the third letter, C, indicates the upper operating temperature ( - 20 OC); ( OC); - the fourth letter, E, indicates the ability of the grease to satisfactory lubrication in the con ditions and to provide the level of anti-rust protection; the fifth letter, A, indicates that the grease has no extreme pressure properties. contamination b) The numerical group or number which appears after each code corresponds to the NLGI corresponding to the measured Penetration level. These numbers are defined as follows : consistency number of the grease NLGI numberl) Worked Penetration according to ISO to to to to to 250 1) NLGI : National Lubricating Grease Institute.

4 4 Recommendations for the choice of lubricants for machine tools bö Q)a General Particular =E Z$ application application More Category Product type and/or specif ic Symbol Examples of applications Remarks Performance requirements application ISO-L A Total loss Refined mineral oils AN 68 Lig htly loaded Parts Systems AN 220 C Gears Enclosed Continuous Refined mineral oils with CKB 32 Enclosed gears operating under light CKB 32 and CKB 38 tan also be used for floodgears lu brication Oxidation sta bility, antiby spash, corrosion (ferrous and non- El CKB 68 load (allied bearings of headstocks, lubricated, mechanically controlled clutches. feed-boxes, carriages) CKB 100 CKB 68 may replace AN 68. circulation ferrous metal) and anti-foam CKB 150 or Spray properties Refined mineral oils with CKC 100 Enclosed gears operating at a stabil- These oils tan also be used for manual or cen- Oxidation stability, anti- pizq ized temperature of oil that remains tralized lubrication of lead and feed screws and corrosion (ferrous and non normal or medium and under high lightly loaded slideways. ferrous metal), anti-foam CKC 220 load. Enclosed gears of any type extreme pressure and anti- (1 (except hypoid gears) and allied bearwear properties CKC 460 ings F Spindle Spindle Refined mineral oils with FC 2 Pressure, bath and oil mist (aerosol) bearings, bearings, improved properties, for FC 5 lubrication of plain or rolling bearings These oils are required for lubrication of Systems including clutches which involve the bearings bearings example, anti-corrosion and FC 10 and associated clutches use of oils which do not contain anti-wear or and and anti-oxidation which may be FC 22 extreme pressure additives because of the risk associated associated obtained by additives of corrosion. clutches clutches Spindle bearings, bearings Refined mineral oils with FD 2 Pressure bath and oil mist (aerosol) These oils tan also be used for applications reimproved properties, for FD 5 lubrication of plain or rolling bearings quiring particularly low-viscosity oils, such as, example : anti-corrosion, anti- FD 10 fine mechanisms, hydraulic or hydropneu- Oxidation, anti-wear, which may be obtained by additives e FD 22 matic mechamisms, electromagnetic clutches, air-line lubricators and hydrostatic bearings G Slideways Refined mineral oils with im- pq Lu brication of plain bearings These oils tan be used for the lubrication of all proved lu bricity and tackiness G 100 slideways. They should be particularly sliding Parts such as lead and feed screws, properties to prevent stick- G 150 useful at low traverse Speeds to cams, ratchets and lightly loaded worm gears Slip minimize vibrations due to discon- with intermittent Service. pö-1 tinuous sliding (stick-slip) t

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