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FAG / Tapered roller bearings

FAG 32306-B

Tapered roller bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
30 mm
Outside diameterD
72 mm
WidthB
28.75 mm
Dynamic load ratingC
73 kN
Static load ratingC0
87 kN
Limiting speednG
10400 r/min

Use this page as a technical reference. Verify the current manufacturer specification and the complete application requirements before selection.

Technical data

Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications14 parameters
Core specifications
ParameterSymbolValue
Series32306
Bore diameterd30 mm
Outside diameterD72 mm
WidthB28.75 mm
Basic dynamic load ratingC73 kN
Basic static load ratingC087 kN
Fatigue load limitPu10.7 kN
Reference speednref7100 r/min
Limiting speednG10400 r/min
Mass≈m0.6 kg
Precision classPN — Normal (ISO 492:2023)
CageStandard — Sheet steel cage, window cage, roller-guided
Minimum operating temperatureTmin-30 °C
Maximum operating temperatureTmax120 °C
Product characteristics6 parameters
Product characteristics
ParameterSymbolValue
Tolerance classPNNormal (ISO 492:2023)
Heat treatmentStandard
CageStandardSheet steel cage, window cage, roller-guided
Internal designBIncreased contact angle
Quality levelStandard
Number of rows1Single-row design
Main Dimensions & Performance Data11 parameters
Main Dimensions & Performance Data
ParameterSymbolValue
Bore diameterd30 mm1.181 in
Outside diameterD72 mm2.835 in
Width, inner ringB27 mm1.063 in
Width, outer ringC23 mm0.906 in
Width, totalT28.75 mm1.132 in
Basic dynamic load rating, radialCr73,000 N16,411.871 lbf
Basic static load rating, radialC0r87,000 N19,559.353 lbf
Fatigue load limit, radialCur10,700 N2,405.576 lbf
Limiting speednG10,400 1/min
Thermal speed ratingnϑr7,100 1/min
Mass≈m0.6 kg1.323 lbs
Mounting dimensions9 parameters
Mounting dimensions
ParameterSymbolValue
Maximum diameter of shaft shoulderda max38 mm1.496 in
Minimum diameter of shaft shoulderdb min37 mm1.457 in
Minimum diameter of housing shoulderDa min59 mm2.323 in
Maximum diameter of housing shoulderDa max65 mm2.559 in
Minimum diameter of housing shoulderDb min67 mm2.638 in
Minimum axial spaceCa min4 mm0.157 in
Minimum axial spaceCb min5.5 mm0.217 in
Maximum fillet radius of shaftra max1.5 mm0.059 in
Maximum fillet radius of housingrb max1.5 mm0.059 in
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Minimum chamfer dimension of inner ring back facer1, 2 min1.5 mm0.059 in
Minimum chamfer dimension of outer ring back facer3, 4 min1.5 mm0.059 in
Distance between the apexes of the pressure conesa23 mm0.906 in
Guidance rib diameter of inner ringd153.2 mm2.094 in
Temperature range2 parameters
Temperature range
ParameterSymbolValue
Operating temperature min.Tmin-30 °C-22 °F
Operating temperature max.Tmax120 °C248 °F
Calculation factors3 parameters
Calculation factors
ParameterSymbolValue
Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye0.55
Dynamic axial load factorY1.1
Static axial load factorY00.6
Capabilities & suitability5 parameters
Capabilities & suitability
ParameterSymbolValue
Radial load capacityYes
Axial load capacity in one directionYes
Suitable for grease lubricationYes
Suitable for oil lubricationYes
Unsealed designYes
Manufacturer Identity7 parameters
Manufacturer Identity
ParameterSymbolValue
Schaeffler Product Code2268516
BrandFAG
Base Type32306
Base product2305091001
Bearing X designation32306-B
Mounting Manager ID32306-B
Grease application ID32306-B
Product Identity2 parameters
Product Identity
ParameterSymbolValue
ConstructionTapered roller bearings 323, main dimensions acc. to DIN 720, separable
Short DescriptionTapered roller bearing
Additional information1 parameter
Additional information
ParameterSymbolValue
Comparative designation to ISO 10317 and ISO 355T5FD030
Technical Data28 parameters
Technical Data
ParameterSymbolValue
Bore Diameter (D)30 mm
Outside Diameter (D)72 mm
Width (B)28.75 mm
Basic Dynamic Load Rating, Radial (Cr)73,000 N
Basic Static Load Rating, Radial (C0R)87,000 N
Operating Temperature Min. (Tmin)-30 °C
Limiting Speed (Ng)10,400 1/min
Operating Temperature Max. (Tmax)120 °C
Reference Speed (Nϑr)7,100 1/min
Maximum Fillet Radius Of Housing (Rb Max)1.5 mm
Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M)1.5 mm
Minimum Diameter Of Housing Shoulder (Da Min)59 mm
Minimum Diameter Of Housing Shoulder (Db Min)67 mm
Width, Outer Ring (C)23 mm
Fatigue Load Limit, Radial (Cur)10,700 N
Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E)0.55
Maximum Diameter Of Shaft Shoulder (Da Max)38 mm
Minimum Diameter Of Shaft Shoulder (Db Min)37 mm
Maximum Diameter Of Housing Shoulder (Da Max)65 mm
Dynamic Axial Load Factor (Y)1.1
Maximum Fillet Radius (Ra Max)1.5 mm
Minimum Axial Space (Cb Min)5.5 mm
Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M)1.5 mm
Guidance Rib Diameter Of Inner Ring (D1)53.2 mm
Minimum Axial Space (Ca Min)4 mm
Width, Inner Ring (B)27 mm
Static Axial Load Factor (Y0)0.6
Distance Between The Apexes Of The Pressure Cones (A)23 mm

Technical documents & data sheet

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Record identity
FAG 32306-B
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