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FAG / Tapered roller bearings

FAG K08118-08231

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

Technical data available
Bore diameterd
30.162 mm
Outside diameterD
58.738 mm
WidthB
14.684 mm
Dynamic load ratingC
29.5 kN
Static load ratingC0
34.5 kN
Limiting speednG
13000 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 specifications13 parameters
Core specifications
ParameterSymbolValue
Bore diameterd30.162 mm
Outside diameterD58.738 mm
WidthB14.684 mm
Basic dynamic load ratingC29.5 kN
Basic static load ratingC034.5 kN
Fatigue load limitPu3.9 kN
Reference speednref7300 r/min
Limiting speednG13000 r/min
Mass≈m0.18 kg
Precision classABMA4 — Class 4 (ANSI/ABMA 19.2:2013)
CageStandard — Sheet steel cage, window cage, roller-guided
Minimum operating temperatureTmin-30 °C
Maximum operating temperatureTmax120 °C
Product characteristics6 parameters
Product characteristics
ParameterSymbolValue
Tolerance classABMA4Class 4 (ANSI/ABMA 19.2:2013)
Heat treatmentStandard
CageStandardSheet steel cage, window cage, roller-guided
Internal designStandard
Quality levelStandard
Number of rows1Single-row design
Main Dimensions & Performance Data11 parameters
Main Dimensions & Performance Data
ParameterSymbolValue
Bore diameterd30.162 mm1.187 in
Outside diameterD58.738 mm2.313 in
Width, inner ringB15.08 mm0.594 in
Width, outer ringC10.716 mm0.422 in
Width, totalT14.684 mm0.578 in
Basic dynamic load rating, radialCr29,500 N6,632.194 lbf
Basic static load rating, radialC0r34,500 N7,756.295 lbf
Fatigue load limit, radialCur3,900 N876.799 lbf
Limiting speednG13,000 1/min
Thermal speed ratingnϑr7,300 1/min
Mass≈m0.18 kg0.397 lbs
Mounting dimensions9 parameters
Mounting dimensions
ParameterSymbolValue
Maximum diameter of shaft shoulderda max35 mm1.378 in
Minimum diameter of shaft shoulderdb min41.5 mm1.634 in
Minimum diameter of housing shoulderDa min55 mm2.165 in
Maximum diameter of housing shoulderDa max53 mm2.087 in
Minimum diameter of housing shoulderDb min52 mm2.047 in
Minimum axial spaceCa min2 mm0.079 in
Minimum axial spaceCb min4 mm0.157 in
Maximum fillet radius of shaftra max3.5 mm0.138 in
Maximum fillet radius of housingrb max1 mm0.039 in
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Minimum chamfer dimension of inner ring back facer1, 2 min3.5 mm0.138 in
Minimum chamfer dimension of outer ring back facer3, 4 min1 mm0.039 in
Distance between the apexes of the pressure conesa13 mm0.512 in
Guidance rib diameter of inner ringd146.2 mm1.819 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 Ye0.47
Dynamic axial load factorY1.27
Static axial load factorY00.7
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 Code2266012
BrandFAG
Base TypeK08118-08231
Base product2305091001
Bearing X designationK08118-08231
Mounting Manager IDK08118-08231
Grease application IDK08118-08231
Product Identity2 parameters
Product Identity
ParameterSymbolValue
ConstructionTapered roller bearings K-Series, in inch sizes, separable
Short DescriptionTapered roller bearing
Technical Data28 parameters
Technical Data
ParameterSymbolValue
Bore Diameter (D)30.162 mm
Outside Diameter (D)58.738 mm
Width (B)14.684 mm
Basic Dynamic Load Rating, Radial (Cr)29,500 N
Basic Static Load Rating, Radial (C0R)34,500 N
Operating Temperature Min. (Tmin)-30 °C
Limiting Speed (Ng)13,000 1/min
Operating Temperature Max. (Tmax)120 °C
Reference Speed (Nϑr)7,300 1/min
Maximum Fillet Radius Of Housing (Rb Max)1 mm
Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M)1 mm
Minimum Diameter Of Housing Shoulder (Da Min)55 mm
Minimum Diameter Of Housing Shoulder (Db Min)52 mm
Width, Outer Ring (C)10.716 mm
Fatigue Load Limit, Radial (Cur)3,900 N
Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E)0.47
Maximum Diameter Of Shaft Shoulder (Da Max)35 mm
Minimum Diameter Of Shaft Shoulder (Db Min)41.5 mm
Maximum Diameter Of Housing Shoulder (Da Max)53 mm
Dynamic Axial Load Factor (Y)1.27
Maximum Fillet Radius (Ra Max)3.5 mm
Minimum Axial Space (Cb Min)4 mm
Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M)3.5 mm
Guidance Rib Diameter Of Inner Ring (D1)46.2 mm
Minimum Axial Space (Ca Min)2 mm
Width, Inner Ring (B)15.08 mm
Static Axial Load Factor (Y0)0.7
Distance Between The Apexes Of The Pressure Cones (A)13 mm

Technical documents & data sheet

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Record identity
FAG K08118-08231
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