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FAG / Tapered roller bearings

FAG K683-672

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

Technical data available
Bore diameterd
95.25 mm
Outside diameterD
168.275 mm
WidthB
41.275 mm
Dynamic load ratingC
226 kN
Static load ratingC0
350 kN
Limiting speednG
4100 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 diameterd95.25 mm
Outside diameterD168.275 mm
WidthB41.275 mm
Basic dynamic load ratingC226 kN
Basic static load ratingC0350 kN
Fatigue load limitPu44.5 kN
Reference speednref3050 r/min
Limiting speednG4100 r/min
Mass≈m3.785 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 characteristics5 parameters
Product characteristics
ParameterSymbolValue
Tolerance classABMA4Class 4 (ANSI/ABMA 19.2:2013)
Heat treatmentStandard
CageStandardSheet steel cage, window cage, roller-guided
Quality levelStandard
Number of rows1Single-row design
Main Dimensions & Performance Data11 parameters
Main Dimensions & Performance Data
ParameterSymbolValue
Bore diameterd95.25 mm3.75 in
Outside diameterD168.275 mm6.625 in
Width, inner ringB41.275 mm1.625 in
Width, outer ringC30.162 mm1.187 in
Width, totalT41.275 mm1.625 in
Basic dynamic load rating, radialCr226,000 N50,809.353 lbf
Basic static load rating, radialC0r350,000 N78,687.05 lbf
Fatigue load limit, radialCur44,500 N10,004.496 lbf
Limiting speednG4,100 1/min
Thermal speed ratingnϑr3,050 1/min
Mass≈m3.785 kg8.344 lbs
Mounting dimensions9 parameters
Mounting dimensions
ParameterSymbolValue
Maximum diameter of shaft shoulderda max106 mm4.173 in
Minimum diameter of shaft shoulderdb min113 mm4.449 in
Minimum diameter of housing shoulderDa min149 mm5.866 in
Maximum diameter of housing shoulderDa max156 mm6.142 in
Minimum diameter of housing shoulderDb min160 mm6.299 in
Minimum axial spaceCa min5 mm0.197 in
Minimum axial spaceCb min9 mm0.354 in
Maximum fillet radius of shaftra max3.6 mm0.142 in
Maximum fillet radius of housingrb max3.3 mm0.13 in
Dimensions4 parameters
Dimensions
ParameterSymbolValue
Minimum chamfer dimension of inner ring back facer1, 2 min3.6 mm0.142 in
Minimum chamfer dimension of outer ring back facer3, 4 min3.3 mm0.13 in
Distance between the apexes of the pressure conesa38 mm1.496 in
Guidance rib diameter of inner ringd1133.2 mm5.244 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 factorY1.28
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 Identity9 parameters
Manufacturer Identity
ParameterSymbolValue
Schaeffler Product Code384865
BrandFAG
Base TypeK683-672
X Life Markingn.r.
SAP material number0384503640000
Base product2305091001
Bearing X designationK683-672
Mounting Manager IDK683-672
Grease application IDK683-672
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)95.25 mm
Outside Diameter (D)168.275 mm
Width (B)41.275 mm
Basic Dynamic Load Rating, Radial (Cr)226,000 N
Basic Static Load Rating, Radial (C0R)350,000 N
Operating Temperature Min. (Tmin)-30 °C
Limiting Speed (Ng)4,100 1/min
Operating Temperature Max. (Tmax)120 °C
Reference Speed (Nϑr)3,050 1/min
Maximum Fillet Radius Of Housing (Rb Max)3.3 mm
Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M)3.3 mm
Minimum Diameter Of Housing Shoulder (Da Min)149 mm
Minimum Diameter Of Housing Shoulder (Db Min)160 mm
Width, Outer Ring (C)30.162 mm
Fatigue Load Limit, Radial (Cur)44,500 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)106 mm
Minimum Diameter Of Shaft Shoulder (Db Min)113 mm
Maximum Diameter Of Housing Shoulder (Da Max)156 mm
Dynamic Axial Load Factor (Y)1.28
Maximum Fillet Radius (Ra Max)3.6 mm
Minimum Axial Space (Cb Min)9 mm
Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M)3.6 mm
Guidance Rib Diameter Of Inner Ring (D1)133.2 mm
Minimum Axial Space (Ca Min)5 mm
Width, Inner Ring (B)41.275 mm
Static Axial Load Factor (Y0)0.7
Distance Between The Apexes Of The Pressure Cones (A)38 mm

Technical documents & data sheet

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Record identity
FAG K683-672
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