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FAG / Tapered roller bearings

FAG 31315

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

Technical data available
Bore diameterd
75 mm
Outside diameterD
160 mm
WidthB
40 mm
Dynamic load ratingC
203 kN
Static load ratingC0
236 kN
Limiting speednG
4400 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 diameterd75 mm
Outside diameterD160 mm
WidthB40 mm
Basic dynamic load ratingC203 kN
Basic static load ratingC0236 kN
Fatigue load limitPu27 kN
Reference speednref3300 r/min
Limiting speednG4400 r/min
Mass≈m3.344 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 designStandard
Quality levelStandard
Number of rows1Single-row design
Main Dimensions & Performance Data11 parameters
Main Dimensions & Performance Data
ParameterSymbolValue
Bore diameterd75 mm2.953 in
Outside diameterD160 mm6.299 in
Width, inner ringB37 mm1.457 in
Width, outer ringC26 mm1.024 in
Width, totalT40 mm1.575 in
Basic dynamic load rating, radialCr203,000 N45,638.489 lbf
Basic static load rating, radialC0r236,000 N53,057.554 lbf
Fatigue load limit, radialCur27,000 N6,070.144 lbf
Limiting speednG4,400 1/min
Thermal speed ratingnϑr3,300 1/min
Mass≈m3.344 kg7.372 lbs
Mounting dimensions9 parameters
Mounting dimensions
ParameterSymbolValue
Maximum diameter of shaft shoulderda max91 mm3.583 in
Minimum diameter of shaft shoulderdb min87 mm3.425 in
Minimum diameter of housing shoulderDa min127 mm5 in
Maximum diameter of housing shoulderDa max148 mm5.827 in
Minimum diameter of housing shoulderDb min151 mm5.945 in
Minimum axial spaceCa min6 mm0.236 in
Minimum axial spaceCb min14 mm0.551 in
Maximum fillet radius of shaftra max3 mm0.118 in
Maximum fillet radius of housingrb max2.5 mm0.098 in
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Minimum chamfer dimension of inner ring back facer1, 2 min3 mm0.118 in
Minimum chamfer dimension of outer ring back facer3, 4 min2.5 mm0.098 in
Distance between the apexes of the pressure conesa50 mm1.969 in
Guidance rib diameter of inner ringd1117.6 mm4.63 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 Ye0.83
Dynamic axial load factorY0.73
Static axial load factorY00.4
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 Identity10 parameters
Manufacturer Identity
ParameterSymbolValue
Schaeffler Product Code383478
BrandFAG
Base Type31315
Old Designation["31315.F22"]
X Life Markingn.r.
SAP material number0167112700000
Base product2305091001
Bearing X designation31315
Mounting Manager ID31315
Grease application ID31315
Product Identity2 parameters
Product Identity
ParameterSymbolValue
ConstructionTapered roller bearings 313, main dimensions acc. to DIN 720, separable
Short DescriptionTapered roller bearing
Additional information1 parameter
Additional information
ParameterSymbolValue
Comparative designation to ISO 10317 and ISO 355T7GB075
Technical Data28 parameters
Technical Data
ParameterSymbolValue
Bore Diameter (D)75 mm
Outside Diameter (D)160 mm
Width (B)40 mm
Basic Dynamic Load Rating, Radial (Cr)203,000 N
Basic Static Load Rating, Radial (C0R)236,000 N
Operating Temperature Min. (Tmin)-30 °C
Limiting Speed (Ng)4,400 1/min
Operating Temperature Max. (Tmax)120 °C
Reference Speed (Nϑr)3,300 1/min
Maximum Fillet Radius Of Housing (Rb Max)2.5 mm
Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M)2.5 mm
Minimum Diameter Of Housing Shoulder (Da Min)127 mm
Minimum Diameter Of Housing Shoulder (Db Min)151 mm
Width, Outer Ring (C)26 mm
Fatigue Load Limit, Radial (Cur)27,000 N
Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E)0.83
Maximum Diameter Of Shaft Shoulder (Da Max)91 mm
Minimum Diameter Of Shaft Shoulder (Db Min)87 mm
Maximum Diameter Of Housing Shoulder (Da Max)148 mm
Dynamic Axial Load Factor (Y)0.73
Maximum Fillet Radius (Ra Max)3 mm
Minimum Axial Space (Cb Min)14 mm
Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M)3 mm
Guidance Rib Diameter Of Inner Ring (D1)117.6 mm
Minimum Axial Space (Ca Min)6 mm
Width, Inner Ring (B)37 mm
Static Axial Load Factor (Y0)0.4
Distance Between The Apexes Of The Pressure Cones (A)50 mm

Technical documents & data sheet

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Record identity
FAG 31315
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