Transcription
ANGULAR CONTACT BEARINGS
ANGULAR CONTACT BEARINGSAngular Contact Bearing DesignAngular contact bearings have one ring shoulderremoved, this may be from the inner or outerring. This allows a larger ball complement thanfound in comparable deep groove bearings, givinga greater load capacity. Speed capacity of angularcontact bearings is also greater than deep groove.Barden angular contact bearings have anominal contact angle ranging from 10 to 25 .They can be used in pre-loaded duplex sets, backto back (DB) or face to face (DF) for supportingthrust loads in both directions or in tandem (DT)for additional capacity.Contact angles are obtained by assemblingthe bearings to the appropriate radial play values.The smaller contact angles give better radialcapacity and rigidity while the higher contactangles give higher axial capacity and rigidity.Angular contact bearings support thrust loadsor combinations of radial and thrust loading. Theycan not accept radial loads alone — a thrust loadof sufficient magnitude must be applied. A singleangular contact bearing can be loaded in onethrust direction only, this may be an operatingload or pre-load.Barden · 36Separable and non-separable types are availablewithin the category of angular contact bearings.Separable bearings are useful where bearingsmust be installed in blind holes or where press fitsare required on the shaft and in the housing. Theseparable feature also permits dynamic balancing ofthe rotating components with the inner ring mountedin place without the outer ring and housing.In Barden miniature and instrument angularcontact bearings (types B and H), machinedphenolic cages with high speed capability arestandard. These cages are outer ring land guided,which allows lubricant access to the most desiredpoint at the ring and ball contact area. Centrifugalforce carries lubricant outwards during operationto reach the other areas of need.For larger spindle and turbine series B types,phenolic cages are also standard, but H typesare normally supplied with bronze cages ofvarious designs.In separable bearings the B type cages havestepped ball pockets to retain the balls when theinner ring is removed.Consult Barden engineering for questionsregarding additional cage considerations, or referto cage discussion in the engineering section. This page folds out
ANGULAR CONTACT BEARINGSNomenclatureExample:M 102JJJ X17R2 C40 0-14Materials & Special ProcessesLubricationSize & SeriesCalibrationRadial RunoutCageRadial Play Functional TestDuplexing & PreloadingSpecial FeaturesMaterials & Special ProcessesBCPC30XSMTVBarrier coatingTCP coatingCeramic Balls‘X Life Ultra’ ringsAISI 440C rings and ballsM50 rings and ballsT5 rings and T15 ballsDenotes Abec 5T for torquetube and extra thin seriesNo symbol indicates SAE 52100 rings and balls––––––––Sizes & SeriesR B – Inch series instrument angularcontact bearing with separablerelieved inner ringR H – Inch series instrument angularcontact bearing with non separablerelieved outer ring30B or H – Metric series spindle/turbineconfigurations as for R series above100B – Metric series spindle turbine bearingwith separable relieved inner ring100/200/300/1900 H – Metric series spindle/turbine angular contact non separablerelieved outer ring100/200/300/1900 J – Metric series spindle/turbine angular contact non separablerelieved inner ringCagesB – Reinforced phenolic, one piece, designedto retain the balls in the outer ringH – Reinforced phenolic, one piece , halo design(H)JB – Bronze machined halo light weightdesign for optimum capacity(H)JH – Bronze machined halo, heavier section,centered on ball pitch diameter(J)JJ – Bronze pressed halo with formed pocketsSpecial FeaturesLetters ‘X’ or ‘Y’ followed by numbers indicatespecial features. Some of these are now‘standard’ and appear in the bearing tables.Some commonly used are:X204 – Customer part number marked on bearingX205 – Full of Balls (no cage)Consult Barden Engineering for details.Radial RunoutE – Special radial runout consult BardenR – Inner ring marked for high point ofradial runoutR1 – Outer ring marked for high point ofradial runoutR2 – Both rings marked with high point ofradial runoutRadial PlayCalibrationRadial play in angular contact bearings is usuallystandardised by the design either:to achieve a desired contact angleorto achieve optimum performance under the typicalcombined load whilst still remaining assembledfor handling and mounting operationsBearings are available with bore and O/D calibratedinto steps of 0.0001", 0.00005" or 0.001mm.C – Bore and O/D in 0.0001" (0.0025mm) stepsC44 – Bore & O/D in 0.00005" (0.00125mm) stepsO – Is used when no calibration is required, i.e.CXO – bore only calibrated in 0.0001" stepsGroups may be combined, i.e.C4X – Bore is calibrated in 0.00005" steps andO/D in 0.0001" stepsCM – Special metric calibration in 1 micronsteps (0.001mm), inner ring bore onlyFor further information consult ‘Calibration’ inEngineering Section.Functional TestAngular contact bearings are not normally subjectto special low torque testing.Duplexing & PreloadsLubricationFor duplex sets, letter symbol indicates type ofmounting. If followed by number, numerals indicatemean preload in pounds. Absence of numberindicates standard preload.D – Universal mounting. Angular contact duplexsets universally ground have inner and outer ringsof the same width, and can be installed DB, DF or DT.Standard Preloads are indicated by: L – Light,M – Medium and H – Heavy.The pre-lubrication type is always indicated withinthe bearing number on the packaging.O or OJ numbers denote oilG or GJ numbers denote greasePopular lubricants are listed within ‘Lubrication’ inthe Engineering Section.Barden · 37
ANGULAR CONTACT BEARINGSProduct Series DescriptionsB TypeJ TypeH TypeSeries R, R100, M and 30 Miniature andInstrument Bearings; Series 1900, 100, 200and 300 Metric Ultra Light, Extra Light,Light and Medium Turbine BearingsSeparable Type (B): Outer ring has full shoulders, innerring has one shoulder cut away. The inner ring is removable for mounting on the shaft separately from the outerring assembly.Non-separable Type (H): Inner ring has full shoulders,outer has one shoulder cut away with a small retaininglip at the edge of raceway.Non-separable Type (J): Outer ring has full shoulders,inner ring has one shoulder cut away with a small retaininglip at the edge of raceway.Materials: The standard material for angular contactbearings is SAE 52100 bearing steel for both rings and balls.With the option of using silicon nitride ceramic balls evenhigher speeds can be attained. Other materials availableare AISI 440C corrosion resistant steel, Cronidur 30 highnitrogen steel and M50 tool steel.Lubricant: Angular contact bearings can be supplied witha range of lubricants. Lubricant type should be specifiedwhen ordering based on application requirements.For applications that cannot tolerate extreme fits, selectivefitting with calibrated parts should be considered. SeeEngineering section for details.Barden · 39
ANGULAR CONTACT (INCH)Bore Diameters: 2.380mm to 12.700mmB and J R4H6.350R4HX86.350R8H12.700Barden · 40MaximumMaximumShaft/Housing Radius Shaft/Housing RadiusWhich Bearing Corner Which Bearing CornerWill ClearWill 512.70012.70015.87515.87515.87528.575H 4.9784.9784.9786.350r1 inchr2 Max.Non-Thrust SidemminchContactAnglend20.0080.150.00616 0.02340.0080.150.00612 0.02730.0030.080.00315 0.01240.0030.080.00320 0.02730.0030.080.00320 0.02730.0120.150.00615 0.02730.0120.150.00615 0.03130.0060.150.00615 0.02730.0120.130.00515 0.06150.0120.130.00510 0.06150.0120.250.01015 0.07030.0120.250.01010 0.07910.0120.150.00615 0.15820.0160.200.00817 0.2930
ANGULAR CONTACT (INCH)Bore Diameters: 2.380mm to 12.700mmB and J TypeH TypeBEARING NOMENCLATUREBoreDiameterdBASICBEARINGNUMBERStatic CapacityBasicDynamicLoadRatingC (N)ATTAINABLE SPEEDS (RPM)B Type:SeparableJ Type:Non-separableH �R8H57,00047,000RadialCo (N)ThrustTo (N)R1-5B5389R1-5H62R144HR8HBarden · 41
ANGULAR CONTACT (METRIC)Bore Diameters: 3mm to 17mmB and J 3BX48203H303H17.00017.00017.00017.000Barden · 42MaximumMaximumShaft/Housing Radius Shaft/Housing RadiusWhich Bearing Corner Which Bearing CornerWill ClearWill 040.00047.000H 0013.00010.00010.00012.00014.000r1 0.300.300.300.300.641.000.300.300.641.00inchr2 Max.Non-Thrust SidemminchContactAnglend20.0060.150.00620 0.02730.0120.130.00512 0.12500.0120.130.00515 0.93800.0120.130.00514 0.93800.0060.150.00625 0.43000.0120.130.00515 0.15820.0120.130.00511 0.11870.0120.130.00514 0.21970.0120.250.01014 0.21970.0120.130.00515 0.17090.0120.250.01015 0.31640.0120.250.01015 0.31640.380.01515 0.43070.0120.150.00615 0.26860.0120.250.01015 0.35160.0120.250.01015 0.35160.0250.380.01515 0.38670.0400.500.02015 0.63500.0120.150.00615 0.34180.0120.250.01015 0.38670.0120.250.01015 0.38670.0120.250.01015 0.35150.0250.380.01515 0.62500.0400.500.02015 1.06350.0120.250.01015 0.45700.0120.250.01015 0.45700.0250.380.01515 0.70560.0400.500.02015 1.18160.025
ANGULAR CONTACT (METRIC)Bore Diameters: 3mm to 17mmB and J TypeH TypeBEARING o (kN)2M3BY3ThrustTo (kN)BasicDynamicLoadRatingC (kN)B Type:SeparableJ Type:Non-separableH tatic CapacityATTAINABLE SPEEDS (RPM)44,100Tables continued on next pageBarden · 43
ANGULAR CONTACT (METRIC)Bore Diameters: 20mm to 50mmB and J Barden · 44MaximumMaximumShaft/Housing Radius Shaft/Housing RadiusWhich Bearing Corner Which Bearing CornerWill ClearWill 0080.00090.000H 0r1 1.001.001.001.501.001.001.501.001.001.00inchr2 Max.Non-Thrust SidemminchContactAnglend20.0250.380.01515 0.68750.0250.380.01515 0.68750.0400.500.02015 0.97660.0400.500.02015 1.48540.0120.250.01015 0.76560.0250.380.01515 0.81250.0250.380.01515 0.81250.0400.500.02015 1.07420.0400.500.02015 2.19730.0400.500.02015 1.10740.0400.500.02015 1.10740.0400.500.02015 1.81540.0401.000.04015 2.82230.0250.380.01515 1.18750.0400.500.02015 1.46480.0400.500.02015 1.46480.0400.500.02015 2.29690.0600.760.03015 3.48050.0400.500.02015 1.66020.0400.500.02015 1.66020.0400.500.02015 2.63670.0600.760.03015 1.07420.0400.500.02015 2.25000.0400.500.02015 2.85640.0600.760.03015 5.19920.0400.500.02015 2.53130.0400.500.02015 2.53130.0400.500.02015 3.5000
ANGULAR CONTACT (METRIC)Bore Diameters: 20mm to 50mmB and J TypeH TypeBEARING o (kN)104HThrustTo (kN)BasicDynamicLoadRatingC (kN)B Type:SeparableJ Type:Non-separableH 210H38.7138.7541.19––210HJH30,000Static CapacityATTAINABLE SPEEDS (RPM)20,000Tables continued on next pageBarden · 45
ANGULAR CONTACT (METRIC)Bore Diameters: 50mm to 100mmB and J 85.000118H90.000220H100.000Barden · 46MaximumMaximumShaft/Housing Radius Shaft/Housing RadiusWhich Bearing Corner Which Bearing CornerWill ClearWill 5.000130.000130.000140.000180.000H .00034.000r1 001.001.501.001.001.001.502.00inchr2 Max.Non-Thrust SidemminchContactAnglend20.0801.000.04015 6.18750.0600.760.03015 4.42970.0600.760.03015 5.46880.0801.000.04015 10.50000.0400.500.02015 3.63670.0400.500.02015 3.44530.0600.760.03015 7.08980.500.02015 5.00000.0400.500.02015 6.64450.0400.500.02015 6.32810.0600.760.03015 7.42190.0801.000.04015 15.00000.040
ANGULAR CONTACT (METRIC)Bore Diameters: 50mm to 100mmB and J TypeH TypeBEARING o (kN)310HThrustTo (kN)BasicDynamicLoadRatingC (kN)B Type:SeparableJ Type:Non-separableH 10,000Static CapacityATTAINABLE SPEEDS (RPM)Barden · 47
Barden angular contact bearings have a nominal contact angle ranging from 10 to 25 . They can be used in pre-loaded duplex sets, back to back (DB) or face to face (DF) for supporting thrust loads in both directions or in tandem (DT) for additional capacity. Contact angles are obtained by assembling the bearings to the appropriate radial play .
