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| Parameter | FAGK9278-922068.263 × 161.925 × 49.212 mm | TIMKENK9278 / K922068.262 × 161.925 × 49.213 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | FAG | TIMKEN |
| Designation | K9278-9220 | K9278 / K9220 |
| Product family | — | TS - Tapered Single |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Series | — | 9200 |
| Bore diameterd | 68.263 mm | 68.262 mm |
| Outside diameterD | 161.925 mm | 161.925 mm |
| WidthB | 49.212 mm | 49.213 mm |
| Basic dynamic load ratingC | 255 kN | 353 kN |
| Basic static load ratingC0 | 300 kN | 330 kN |
| Fatigue load limitPu | 35 kN | — |
| Reference speednref | 4000 r/min | — |
| Limiting speednG | 4350 r/min | — |
| Mass≈m | 4.6 kg | 4.52 kg |
| Precision class | ABMA4 — Class 4 (ANSI/ABMA 19.2:2013) | — |
| Cage | Standard — Sheet steel cage, window cage, roller-guided | — |
| Minimum operating temperatureTmin | -30 °C | — |
| Maximum operating temperatureTmax | 120 °C | — |
| Calculation Factors | ||
| K Factor | — | 0.82 |
| Y1 Factor | — | 0.85 |
| Y2 Factor | — | -1.00 |
| Y0 Factor | — | 0.47 |
| E Factor | — | 0.71 |
| Cg Factor | — | 0.0925 |
| Calculation factors | ||
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye | 0.71 | — |
| Dynamic axial load factorY | 0.85 | — |
| Static axial load factorY0 | 0.47 | — |
| Capabilities & suitability | ||
| Radial load capacity | Yes | — |
| Axial load capacity in one direction | Yes | — |
| Suitable for grease lubrication | Yes | — |
| Suitable for oil lubrication | Yes | — |
| Unsealed design | Yes | — |
| Dimensions | ||
| Minimum chamfer dimension of inner ring back facer1, 2 min | 3.6 mm | — |
| Minimum chamfer dimension of inner ring back facer1, 2 min | 0.142 in | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | 3.3 mm | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | 0.13 in | — |
| Distance between the apexes of the pressure conesa | 50 mm | — |
| Distance between the apexes of the pressure conesa | 1.969 in | — |
| Guidance rib diameter of inner ringd1 | 115.9 mm | — |
| Guidance rib diameter of inner ringd1 | 4.563 in | — |
| Main Dimensions & Performance Data | ||
| Width, inner ringB | 46.038 mm | — |
| Width, inner ringB | 1.813 in | — |
| Width, outer ringC | 31.75 mm | — |
| Width, outer ringC | 1.25 in | — |
| Width, totalT | 49.212 mm | — |
| Width, totalT | 1.937 in | — |
| Basic dynamic load rating, radialCr | 255,000 N | — |
| Basic dynamic load rating, radialCr | 57,329.137 lbf | — |
| Basic static load rating, radialC0r | 300,000 N | — |
| Basic static load rating, radialC0r | 67,446.043 lbf | — |
| Fatigue load limit, radialCur | 35,000 N | — |
| Fatigue load limit, radialCur | 7,868.705 lbf | — |
| Thermal speed ratingnϑr | 4,000 1/min | — |
| Manufacturer Identity | ||
| Schaeffler Product Code | 2267364 | — |
| Material Number | — | 190036619190036618 |
| Base Type | K9278-9220 | — |
| World Assembly Part Number | — | K9278 / K9220 |
| Product Line Id | 64 | — |
| Inner Ring Part Number | — | K9278 |
| Outer Ring Part Number | — | K9220 |
| Official Source System | — | TS_PREPAIR |
| Official Last Run | — | 2026-08-23T00:00:00 |
| Base product | 2305091001 | — |
| Bearing X designation | K9278-9220 | — |
| Mounting Manager ID | K9278-9220 | — |
| Grease application ID | K9278-9220 | — |
| Mounting dimensions | ||
| Maximum diameter of shaft shoulderda max | 89 mm | — |
| Maximum diameter of shaft shoulderda max | 3.504 in | — |
| Minimum diameter of shaft shoulderdb min | 106 mm | — |
| Minimum diameter of shaft shoulderdb min | 4.173 in | — |
| Minimum diameter of housing shoulderDa min | 138 mm | — |
| Minimum diameter of housing shoulderDa min | 5.433 in | — |
| Maximum diameter of housing shoulderDa max | 151 mm | — |
| Maximum diameter of housing shoulderDa max | 5.945 in | — |
| Minimum diameter of housing shoulderDb min | 153 mm | — |
| Minimum diameter of housing shoulderDb min | 6.024 in | — |
| Minimum axial spaceCa min | 5 mm | — |
| Minimum axial spaceCa min | 0.197 in | — |
| Minimum axial spaceCb min | 13 mm | — |
| Minimum axial spaceCb min | 0.512 in | — |
| Maximum fillet radius of shaftra max | 3.6 mm | — |
| Maximum fillet radius of shaftra max | 0.142 in | — |
| Maximum fillet radius of housingrb max | 3.3 mm | — |
| Maximum fillet radius of housingrb max | 0.13 in | — |
| Product characteristics | ||
| Tolerance classABMA4 | Class 4 (ANSI/ABMA 19.2:2013) | — |
| Heat treatment | Standard | — |
| Internal design | Standard | — |
| Quality level | Standard | — |
| Number of rows1 | Single-row design | — |
| Product Identity | ||
| Construction | Tapered roller bearings K-Series, in inch sizes, separable | — |
| Short Description | Tapered roller bearing | — |
| Type Description | — | TS - Tapered Single |
| Number Of Rows | — | 1 |
| Tapered Bore | — | N |
| Technical Data | ||
| Bore Diameter (D) | 68.263 mm | — |
| Overall Width | — | 50.638 mm |
| Outside Diameter (D) | 161.925 mm | — |
| Radial Rating | — | 91,400 N |
| Width (B) | 49.212 mm | — |
| Axial Rating | — | 111,000 N |
| Basic Dynamic Load Rating, Radial (Cr) | 255,000 N | — |
| Dynamic Rating C1 | — | 353,000 N |
| Basic Static Load Rating, Radial (C0R) | 300,000 N | — |
| Dynamic Rating C90 | — | 91,400 N |
| Operating Temperature Min. (Tmin) | -30 °C | — |
| Dynamic Axial Rating Ca90 | — | 111,000 N |
| Limiting Speed (Ng) | 4,350 1/min | — |
| Dynamic Axial Rating Ca1 | — | 428,000 N |
| Operating Temperature Max. (Tmax) | 120 °C | — |
| Static Radial Rating C0 | — | 330,000 N |
| Reference Speed (Nϑr) | 4,000 1/min | — |
| Extended Dynamic Rating Ce | — | 0 N |
| Maximum Fillet Radius Of Housing (Rb Max) | 3.3 mm | — |
| Static Axial Rating C0A | — | 682,000 N |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | 3.3 mm | — |
| Minimum Diameter Of Housing Shoulder (Da Min) | 138 mm | — |
| Minimum Diameter Of Housing Shoulder (Db Min) | 153 mm | — |
| Width, Outer Ring (C) | 31.75 mm | — |
| Fatigue Load Limit, Radial (Cur) | 35,000 N | — |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.71 | — |
| Maximum Diameter Of Shaft Shoulder (Da Max) | 89 mm | — |
| Minimum Diameter Of Shaft Shoulder (Db Min) | 106 mm | — |
| Maximum Diameter Of Housing Shoulder (Da Max) | 151 mm | — |
| Dynamic Axial Load Factor (Y) | 0.85 | — |
| Maximum Fillet Radius (Ra Max) | 3.6 mm | — |
| Minimum Axial Space (Cb Min) | 13 mm | — |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | 3.6 mm | — |
| Guidance Rib Diameter Of Inner Ring (D1) | 115.9 mm | — |
| Minimum Axial Space (Ca Min) | 5 mm | — |
| Width, Inner Ring (B) | 46.038 mm | — |
| Static Axial Load Factor (Y0) | 0.47 | — |
| Distance Between The Apexes Of The Pressure Cones (A) | 50 mm | — |
| Temperature range | ||
| Operating temperature min.Tmin | -30 °C | — |
| Operating temperature min.Tmin | -22 °F | — |
| Operating temperature max.Tmax | 120 °C | — |
| Operating temperature max.Tmax | 248 °F | — |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.