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FAG / Tapered roller bearings

FAG K66584-66520

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

Technical data available
Bore diameterd
53.975 mm
Outside diameterD
122.238 mm
WidthB
33.338 mm
Dynamic load ratingC
137 kN
Static load ratingC0
167 kN
Limiting speednG
5800 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 diameterd53.975 mm
Outside diameterD122.238 mm
WidthB33.338 mm
Basic dynamic load ratingC137 kN
Basic static load ratingC0167 kN
Fatigue load limitPu20.6 kN
Reference speednref4450 r/min
Limiting speednG5800 r/min
Mass≈m1.87 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 diameterd53.975 mm2.125 in
Outside diameterD122.238 mm4.813 in
Width, inner ringB31.75 mm1.25 in
Width, outer ringC23.813 mm0.938 in
Width, totalT33.338 mm1.313 in
Basic dynamic load rating, radialCr137,000 N30,800.36 lbf
Basic static load rating, radialC0r167,000 N37,544.964 lbf
Fatigue load limit, radialCur20,600 N4,631.295 lbf
Limiting speednG5,800 1/min
Thermal speed ratingnϑr4,450 1/min
Mass≈m1.87 kg4.123 lbs
Mounting dimensions8 parameters
Mounting dimensions
ParameterSymbolValue
Maximum diameter of shaft shoulderda max68 mm2.677 in
Minimum diameter of shaft shoulderdb min75 mm2.953 in
Minimum diameter of housing shoulderDa min105 mm4.134 in
Minimum diameter of housing shoulderDb min116 mm4.567 in
Minimum axial spaceCa min4 mm0.157 in
Minimum axial spaceCb min10 mm0.394 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 conesa35 mm1.378 in
Guidance rib diameter of inner ringd192.3 mm3.634 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 Ye0.67
Dynamic axial load factorY0.9
Static axial load factorY00.5
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 Code2267165
BrandFAG
Base TypeK66584-66520
Base product2305091001
Bearing X designationK66584-66520
Mounting Manager IDK66584-66520
Grease application IDK66584-66520
Product Identity2 parameters
Product Identity
ParameterSymbolValue
ConstructionTapered roller bearings K-Series, in inch sizes, separable
Short DescriptionTapered roller bearing
Technical Data27 parameters
Technical Data
ParameterSymbolValue
Bore Diameter (D)53.975 mm
Outside Diameter (D)122.238 mm
Width (B)33.338 mm
Basic Dynamic Load Rating, Radial (Cr)137,000 N
Basic Static Load Rating, Radial (C0R)167,000 N
Operating Temperature Min. (Tmin)-30 °C
Limiting Speed (Ng)5,800 1/min
Operating Temperature Max. (Tmax)120 °C
Reference Speed (Nϑr)4,450 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)105 mm
Minimum Diameter Of Housing Shoulder (Db Min)116 mm
Width, Outer Ring (C)23.813 mm
Fatigue Load Limit, Radial (Cur)20,600 N
Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E)0.67
Maximum Diameter Of Shaft Shoulder (Da Max)68 mm
Minimum Diameter Of Shaft Shoulder (Db Min)75 mm
Dynamic Axial Load Factor (Y)0.9
Maximum Fillet Radius (Ra Max)3.6 mm
Minimum Axial Space (Cb Min)10 mm
Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M)3.6 mm
Guidance Rib Diameter Of Inner Ring (D1)92.3 mm
Minimum Axial Space (Ca Min)4 mm
Width, Inner Ring (B)31.75 mm
Static Axial Load Factor (Y0)0.5
Distance Between The Apexes Of The Pressure Cones (A)35 mm

Technical documents & data sheet

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Record identity
FAG K66584-66520
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