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| Parameter | FAG3291155 × 80 × 17 mm | KOYO32911JR55 × 80 × 17 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | FAG | KOYO |
| Designation | 32911 | 32911JR |
| Product family | — | Single-row / Metric series |
| Detailed type | Tapered roller bearings | Tapered roller bearings |
| Bore diameterd | 55 mm | 55 mm |
| Outside diameterD | 80 mm | 80 mm |
| WidthB | 17 mm | 17 mm |
| Basic dynamic load ratingC | 45.5 kN | 55.8 kN |
| Basic static load ratingC0 | 75 kN | 73.3 kN |
| Fatigue load limitPu | 9 kN | 10.6 kN |
| Reference speednref | 4700 r/min | — |
| Limiting speednG | 8900 r/min | 4400 r/min |
| Mass≈m | 0.28771 kg | 0.285 kg |
| Precision class | P6X — Class 6X (ISO 492:2023) | — |
| Cage | Standard — Sheet steel cage, window cage, roller-guided | — |
| Minimum operating temperatureTmin | -30 °C | — |
| Maximum operating temperatureTmax | 120 °C | — |
| Additional information | ||
| Comparative designation to ISO 10317 and ISO 355 | T2BC055 | — |
| Calculation factors | ||
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye | 0.31 | — |
| Dynamic axial load factorY | 1.94 | — |
| Static axial load factorY0 | 1.07 | — |
| 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 | — |
| Classification | ||
| Official Category Path | — | Tapered roller bearings - Single-row - Metric series |
| Official Classification 1 | — | Tapered roller bearings / Single-row / Metric series |
| Dimensions | ||
| Minimum chamfer dimension of inner ring back facer1, 2 min | 1 mm | — |
| Minimum chamfer dimension of inner ring back facer1, 2 min | 0.039 in | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | 1 mm | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | 0.039 in | — |
| Distance between the apexes of the pressure conesa | 14 mm | — |
| Distance between the apexes of the pressure conesa | 0.551 in | — |
| Guidance rib diameter of inner ringd1 | 68.8 mm | — |
| Guidance rib diameter of inner ringd1 | 2.709 in | — |
| Main Dimensions & Performance Data | ||
| Width, inner ringB | 17 mm | — |
| Width, inner ringB | 0.669 in | — |
| Width, outer ringC | 14 mm | — |
| Width, outer ringC | 0.551 in | — |
| Width, totalT | 17 mm | — |
| Width, totalT | 0.669 in | — |
| Basic dynamic load rating, radialCr | 45,500 N | — |
| Basic dynamic load rating, radialCr | 10,229.317 lbf | — |
| Basic static load rating, radialC0r | 75,000 N | — |
| Basic static load rating, radialC0r | 16,861.511 lbf | — |
| Fatigue load limit, radialCur | 9,000 N | — |
| Fatigue load limit, radialCur | 2,023.381 lbf | — |
| Thermal speed ratingnϑr | 4,700 1/min | — |
| Manufacturer Identity | ||
| Schaeffler Product Code | 1281597 | — |
| Official Class Key | — | 050-010-010 |
| Base Type | 32911 | — |
| Gpsd Group | F04 | — |
| Product Line Id | 36 | — |
| SAP material number | 0857169950000 | — |
| Base product | 2305091001 | — |
| Bearing X designation | 32911 | — |
| Mounting Manager ID | 32911 | — |
| Grease application ID | 32911 | — |
| Mounting dimensions | ||
| Maximum diameter of shaft shoulderda max | 61 mm | — |
| Maximum diameter of shaft shoulderda max | 2.402 in | — |
| Minimum diameter of shaft shoulderdb min | 61 mm | — |
| Minimum diameter of shaft shoulderdb min | 2.402 in | — |
| Minimum diameter of housing shoulderDa min | 73 mm | — |
| Minimum diameter of housing shoulderDa min | 2.874 in | — |
| Maximum diameter of housing shoulderDa max | 74 mm | — |
| Maximum diameter of housing shoulderDa max | 2.913 in | — |
| Minimum diameter of housing shoulderDb min | 76 mm | — |
| Minimum diameter of housing shoulderDb min | 2.992 in | — |
| Minimum axial spaceCa min | 4 mm | — |
| Minimum axial spaceCa min | 0.157 in | — |
| Minimum axial spaceCb min | 3 mm | — |
| Minimum axial spaceCb min | 0.118 in | — |
| Maximum fillet radius of shaftra max | 1 mm | — |
| Maximum fillet radius of shaftra max | 0.039 in | — |
| Maximum fillet radius of housingrb max | 1 mm | — |
| Maximum fillet radius of housingrb max | 0.039 in | — |
| Product characteristics | ||
| Tolerance classP6X | Class 6X (ISO 492:2023) | — |
| Heat treatment | Standard | — |
| Internal design | Standard | — |
| Quality level | Standard | — |
| Number of rows1 | Single-row design | — |
| Product Identity | ||
| Construction | Tapered roller bearings 329, main dimensions acc. to DIN 720, separable | — |
| Short Description | Tapered roller bearing | — |
| Technical Data | ||
| d | — | 80 mm |
| T | — | 17 mm |
| Bore Diameter (D) | 55 mm | — |
| B | — | 17 mm |
| Outside Diameter (D) | 80 mm | — |
| C | — | 14 mm |
| Width (B) | 17 mm | — |
| R(Min.) | — | 1 mm |
| Basic Dynamic Load Rating, Radial (Cr) | 45,500 N | — |
| R1(Min.) | — | 1 mm |
| Basic Static Load Rating, Radial (C0R) | 75,000 N | — |
| Basic Load Ratings : Cr | — | 55.8 kN |
| Operating Temperature Min. (Tmin) | -30 °C | — |
| Basic Load Ratings : C0R | — | 73.3 kN |
| Limiting Speed (Ng) | 8,900 1/min | — |
| Fatigue Load Limit : Cu | — | 10.6 kN |
| Operating Temperature Max. (Tmax) | 120 °C | — |
| Limiting Speeds(Grease Lub.) | — | 4400 min-1 |
| Reference Speed (Nϑr) | 4,700 1/min | — |
| Limiting Speeds(Oil Lub.) | — | 5900 min-1 |
| Maximum Fillet Radius Of Housing (Rb Max) | 1 mm | — |
| Load Center Spread : A | — | 14.5 mm |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | 1 mm | — |
| Constant E | — | 0.31 |
| Minimum Diameter Of Housing Shoulder (Da Min) | 73 mm | — |
| Axial Load Factors : Y1 | — | 1.94 |
| Minimum Diameter Of Housing Shoulder (Db Min) | 76 mm | — |
| Axial Load Factors : Y0 | — | 1.07 |
| Width, Outer Ring (C) | 14 mm | — |
| Da(Min.) | — | 72 mm |
| Fatigue Load Limit, Radial (Cur) | 9,000 N | — |
| Db(Max.) | — | 61 mm |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.31 | — |
| Da(Max.) | — | 74 mm |
| Maximum Diameter Of Shaft Shoulder (Da Max) | 61 mm | — |
| Db(Min.) | — | 76 mm |
| Minimum Diameter Of Shaft Shoulder (Db Min) | 61 mm | — |
| Sa(Min.) | — | 3 mm |
| Maximum Diameter Of Housing Shoulder (Da Max) | 74 mm | — |
| Sb(Min.) | — | 3 mm |
| Dynamic Axial Load Factor (Y) | 1.94 | — |
| Ra(Max.) | — | 1 mm |
| Maximum Fillet Radius (Ra Max) | 1 mm | — |
| Rb(Max.) | — | 1 mm |
| Minimum Axial Space (Cb Min) | 3 mm | — |
| Mass(Refer.) | — | 0.285 kg |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | 1 mm | — |
| Guidance Rib Diameter Of Inner Ring (D1) | 68.8 mm | — |
| Minimum Axial Space (Ca Min) | 4 mm | — |
| Width, Inner Ring (B) | 17 mm | — |
| Static Axial Load Factor (Y0) | 1.07 | — |
| Distance Between The Apexes Of The Pressure Cones (A) | 14 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.