Standard catalog - iCub

1 Standard catalog more than a bearingmore than a bearingWelcome to the myonic Groupmyonic GmbHLeutkirchSteinbeisstra emyonic GmbHLeutkirchNadlerstra emyonic Republicmore than a bearingIndex 12-345678910-1112-131415161718-192021222 324-3132 Introductionmyonic numbering systemQuality assuranceCleanlinessResearch & development / EngineeringMaterials for ringsClosuresPreload and duplex mountingCagesLimits of dimensional and functional accuracy of radial bearingsRadial / axial play and contact angleSensitivityStarting torqueCode for grading by dimensional groupsLubricationMounting adviceShaft and housing tolerancesMating parts design adviceCalculation of loadsCalculation of the theoretical life expectancy of a ball bearingsPackagingmore than a bearing56-5756-575860-6162-6364-6534-373 8-4142-4344-4546-4748-5152-5354-55 IndexRadial single row ball bearings,metric series:Open R, UL.

2 Closed RV, ULV,ULZT, ULZ, RX, RFRadial single row ball bearings inch series:Open R, ULClosed RV, ULV,ULZ, RX, RFRadial single row ball bearings withmodified outer ring dimension, inch series:Closed MV, MVT, MZ, MX, MFStandard and flanged radial singlerow ball bearings with extendedinner ring, inch series: Open RU, ULU, RKU, ULKUC losed ULUZ, ULKUZF langed radial single row ballbearings, metric series: Open RK, ULK, ULKWC losed RKV, ULKZ, RKX, RKFF langed radial single row ballbearings, inch series:Open RK, ULKC losed ULKZ, RKX, RKFA ngular contact separable ball bearings,metric series: RAAngular contact separable ball bearings, inch series: RAFlanged angular contact separable ball bearings, metric series: RKAF langed angular contact separable ball bearings, inch series: RKAT hrust ball bearings, metric series: BCirclips for shafts and housings: WSR, BSRP recision spring washers: FSPrecision shims.

3 PSmore than a bearing1more than a bearingRadial deep-groove ball bearing Single-row, radial, deep-groove ballbearing with an extended inner ring Radial deep-groove ball bearing Single-row, radial, deep-groove ballbearing with a flange IntroductionThe early 30 s was a difficult time for the Swiss watch industry,but the watch manufacturer La Champagne SA in Biel/Biennerecognized the increasingly important role electricity would play inpeople s daily lives. All electrical appliances have one thing in common they needminiature ball bearings in order to function. So in 1932 the company successfully became involved with smallcomponents and created a spin-off company named RMB[Roulement Minature Bienne].

4 In 1969 a RMB miniature ball bearing was on the first mannedmoon landing also a big step for 1971 RMB acquired MKL-Miniature-Kugellager GmbHLeutkirch. Together they gained significant market 1979 RMB produced an annual quantity of 2 million ballbearings and by 1986 approached the 3 million 1994 RMB established an assembly plant in Roznov, CzechRepublic, the Silicon Valley of Eastern December 2001, under the name of myonic , RMB hasdeveloped into one of the world s leading suppliers in the design,engineering, manufacturing and assembly of high-precision ballbearings and system , the company coined the phrase.

5 Myonic more than a bearing We started out small and have developed into a major market leaderOriginal size UL 103 Xmyonic numbering system2more than a bearingUL 3006X-48-A5P-6/10 ULKZ RKF 6190X-237HG-P4P-2/5 ULKU 8012X-48-A9P-2/10RA 4012X-257HP-A7PR referenceMaterialFeaturesDuplexedbearing sBall cagesPrecision gradeRadial playTypes listed Example :UL=type3006=basic size ofbearing bore in 1/32 of aninch or in millimetersfor metric 440 C Stainless suffix is requiredfor chrome steel AISI52100> page 6, 1 closure 1 closure,flanged side .1v= 1 closure only,side opposite flange> page 8 Type of Mounting face to back to tandem1000= preload of10[N]> page 9 Type and cage is notmentioned in thereference.

6 > page 10, 11 Dimensional andfunctional accuracyare according toABEC or ISO Grades> page 12, 13 Lower/upper limitsexpressed in micronsStandard radial playof 6/15 [ m] is notincluded in thereference.> page 14myonic numbering system for bearingsmore than a bearing3myonic numbering system-10 -L23-S4 limit> page 1410^= Limit174^= meassuringinstrument10^= limit [ Nm]75^= axial load [cN]D^= starting torque> page 15, 16 Coding bydimensional groups.> page 17 Letter J followed bya number refers toan internaldocument andcovers anyrequirement thatcannot be expressedby the codeL = oilG = greaseExample:-G48/20 = greaseG48, dispersion 20%-G18/.

7 Mg = greaseG18, > page 18 Contact angleQuietnessTorqueCoding of boresand outside diaSpecialinstructionLubricationQuality certification4more than a bearingCleanliness is essential for proper performance of bear-ings but is particularly important for miniature bearings. myonic achieves this cleanliness by: Complete temperature and humidity control and air fil-tration of all production departments. Ultrasonic cleaning of all components after each stageof manufacture. Cleaning of all component parts by our special meth-ods, just prior to assembly. The assembly of bearings in class 10,000 clean roomsunder class 100 laminar flow benches.

8 Strict observation of clean room procedures for all per-sonnel working therein. The cleaning of assembled product by processes spe-cially designed and perfected by myonic for miniaturebearings. The use of special filtered lubricants. The packing of finished bearings in clean pouches ortubes, hermetically examples give an indication of the effort myonicmake to supply their customers with bearings to the high-est degree of cleanliness. Our customers also need to main-tain this attention to detail. This may be achieved byobserving the following points: All mating parts must be manufactured to correct tol-erances as recommended in this catalog .

9 The surface finishes of these parts must be satisfactoryfor the application in question and all componentsmust be free of burrs, corrosion, etc. Any cleaning prior to final assembly should be doneoutside of the assembly area, with special attentionpaid to ensure the cleaned parts do not become con-taminated during the transport process to the assemblyarea. The bearings should be assembled in a space arrangedfor this purpose and separate from other should, if possible, conform to clean room standards ,with a dust free atmosphere and temperature and hu-midity control.

10 Machining should not be done in thesame room. The personnel employed in the assembly of miniaturebearings should be subject to special rules of cleanli-ness. It is normal practice to equip them with coverallsor gowns and headdress of special non-fibrous mate-rial. It should be strictly forbidden to smoke, eat, wearmakeup, etc. within the confines of the clean room. Bearings should remain in their protective packaginguntil just prior to assembly. If the package contains sev-eral bearings, it should be opened in such a way thatonly one bearing may be taken out at a time.