CONTENTS Precision Technology Inside - FAG bearing

1 CONTENTSP. 4P. 8P. 7 8P. 8 4P. 102P. 112P. 128P. 134P. 143P. 150P. 162P. 172P. 174P. 176P. 178P. 182P. 183P. 184P. 208P. 209 FAG 2 Precision Technology InsideBearing TablesSpindle BearingsFloating Displacement BearingsSuper Precision Cylindrical Roller BearingsDouble Direction Angular Contact Thrust Ball BearingsAngular Contact Thrust Ball Bearings for Ball ScrewsAxial-Radial Cylindrical Roller BearingsEngineeringLife Calculation for Super Precision BearingsLubricationTolerances for Super Precision BearingsMachining Tolerances for Mating PartsSpeed-Dependent FitsSpeedsDeflection and RigidityHandling of Super Precision BearingsAppendixSPICAS 2000 Other ProductsBearing CodeNotesIndex FAG-Hong Kong Eric bearing Co.

2 ,Ltd, Web Site: 3 Precision Technology InsideSpindle , , , , , , , , , , Floating Displacement BearingsFD10 Super Precision Cylindrical Roller BearingsN10, N19, HCN10NN30, NNU49 Double Direction Angular Contact Thrust Ball Bearings2344, 2347 Angular Contact Thrust Ball Bearings for Ball Screws7602, 7603, BSBDBSBDBSBSA xial-Radial Cylindrical Roller BearingsRTCE ngineeringAppendixP. 12P. 78P. 80P. 84P. 86P. 94 P. 102P. 104P. 112P. 114P. 120P. 124 P. 128P. 130P. 4P. 8P. 134P. 182 FAG-Hong Kong Eric bearing Co.,Ltd, Web Site: Precision BEARINGSPubl. No. AC 41 130/4 EA Edition March 2002 FAG-Hong Kong Eric bearing Co.,Ltd, Web Site: Technology INSIDEO ptimum Customer Benefit Precision Technology Inside of FAG AC/SP pursues one ulti-mate goal:Optimum Customer is far more to this conceptthan merely supplying specificproducts.

3 It focuses on the applica-tion of FAG AC/SP super precisionproducts and thus on the cus-tomer. This focus is built on economic efficiency reliability able to meet these claims re-quires continual contact with thecustomers, in order to learn abouttheir demands and processes. Thispermits the selection of the mostadequate product that will involvethe lowest system costs. The solidbasic research of FAG, its participa-tion in university research projectsand its worldwide operation laythe foundations for the develop-ment of new, reliable products andtheir use in new and first glance, the accuracy ofbearings seems to be sufficientlydefined in DIN/ISO or ABEC stan-dards.

4 Yet FAG super precisionbearings go beyond this. In addi-tion to demanding tolerances to P4or better, there are other perfor-mance features that are not cov-ered by these norms. FAG superprecision bearings set standardswherever there are extreme de-mands in terms of reliability, highrunning accuracy and/or highspeeds whether incorporated inmachine tools, auxiliary devices inthe textile industry, woodworkingmachines or elsewhere. The com-prehensive product range permitsoptimum bearing arrangements forall types of locations and applica-tions. The performance of FAG su-per Precision bearings in a specificapplication is achieved in particu-lar through close co-operation withthe customer.

5 The higher and morecomplex the demands, the betterthe super Precision bearing exper-tise will come to bear that has builtup in FAG application engineeringover the years. This catalogue pro-vides a survey of the products andthe most important rules for bear-ing selection and bearing arrange-ment design. For more detailed in-formation, please do not hesitateto turn to our competent contactpartners. This is our contribution to asuccessful 4 FAG super Precision bearingsFAG-Hong Kong Eric bearing Co.,Ltd, Web Site: 5 FAG Super Precision bearing Range FAG X-life ultraFAG Super Precision bearing RangeAs machine tools are the main fieldof application for FAG super preci-sion bearings, the super precisionbearing range is built up in such away that all machine tool locationsrequiring such bearings spindles,ball screws, rotary tables can beserved.

6 Thanks to the high perfor-mance standard of the existingproduct range, specific tailor-madesolutions are rarely required. Thisis advantageous both in terms ofbearing availability and stock-keeping. In addition, special cus-tomer- or application-specificproducts are also developed when-ever X-life ultraThe FAG X-life ultra bearing repre-sents the top product among spin-dle bearings. In a virtually idealway, it combines ceramic materialand special rolling bearing steelwith FAG bearing and applicationexpertise to form a top-perfor-mance unit. X-life ultra bearingsopen up possibilities for maximumspeeds and extended service lifethat offer both the machine orspindle manufacturer and the enduser an enormous potential forsystem cost X-life ultra bearingsFAG-Hong Kong Eric bearing Co.

7 ,Ltd, Web Site: Technology INSIDEP roduct Features of FAG Super Precision BearingsProduct Features of FAGS uper Precision BearingsAccuracy to P4 SAll important product features ofFAG super Precision bearings meetPrecision Class P2 (ABEC9). Thisapplies to the dimensional andrunning accuracy as well as theparallelism of FAG bearings thatare manufactured to FAG Precision spindle bear-ing arrangements can therefore bedesigned with standard FAG bear-ings. The experience gained withspindle bearings both in produc-tion and practical application hasencouraged the transfer of this phi-losophy to other types of instance, it also applies to FAGindexing table bearings that meetthe demands of a higher precisionclass as standard for the most super Precision bearings aremanufactured from high-grade ma-terials.

8 Wear resistance and longmaterial fatigue life up to fail-safetyare achieved through a specificheat treatment procedure for steelmaterials. Among these, Cronidur30 takes a special status. Its uniqueproperties as to alternating bend-ing strength and corrosion resis-tance result in significantly extend-ed service life, higher admissiblecontact pressure for fail-safety,higher admissible speeds and sig-nificantly enhanced lubricant ser-FAG 6 FAG hybrid bearingsFAG RTC indexing table bearingsFAG-Hong Kong Eric bearing Co.,Ltd, Web Site: 7vice life. The standard for spindlebearings are hybrid bearings acombination of steel rings and ce-ramic balls.

9 Cylindrical roller bearings alsocomprise ceramic rollers. Siliconnitride is the ceramic material thatcombines the typical ceramic prop-erties in the most favourable compared to steel are the excellent tribological behav-iour of steel and ceramics in hy-brid bearings, resulting in re-duced material and lubricantstress. the reduced density with corre-spondingly lower centrifugalforces. the lower thermal expansion co-efficient with its positive effecton bearing preload. the higher elastic-modulus thathas a positive influence on bear-ing rigidityThese factors result in significantlyextended bearing life. For this rea-son, hybrid bearings are mean-while commonly used even withlower speeds.

10 LubricationThe lubricant plays a decisive rolein the overall consideration of thesystem bearing as the decision infavour of either oil or grease hasan immense influence on systemcosts. Super Precision bearings andFAG AC/SP lubricants permit reli-able grease lubrication even atmaximum speeds. Before a lubri-cant is approved for such applica-tions, it has to undergo a strict ap-proval procedure. Here, applica-tion-specific demands play a cru-cial role, for instance high speeds,low temperatures and non-criticalrun-in behaviour in the case ofspindles. The final result is a spe-cial product definition for whichcompliance is ensured by continu-ous sealed bearings, lubricated for lifeFAG-Hong Kong Eric bearing Co.