Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 317.5 mm |
| Outside diameter | D | 422.275 mm |
| Basic dynamic load rating | C | 4550 kN |
| Basic static load rating | C0 | 7800 kN |
| Fatigue load limit | Pu | 710 kN |
| Mass | ≈m | 104 kg |
| Precision class | ABMA4 — Class 4 (ANSI/ABMA 19.2:2013) | |
| Cage | Standard — Sheet steel cage, window cage, roller-guided | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °C |
Product characteristics7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Tolerance class | ABMA4 | Class 4 (ANSI/ABMA 19.2:2013) |
| Heat treatment | Standard | |
| Cage | Standard | Sheet steel cage, window cage, roller-guided |
| Axial internal clearance | A300-400 | Axial internal clearance between 300 and 400 µm |
| Quality level | Standard | |
| Matched arrangement | TQO | TQO arrangement |
| Number of rows | 4 | Four-row design |
Main Dimensions & Performance Data8 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 317.5 mm12.5 in |
| Outside diameter | D | 422.275 mm16.625 in |
| Width of bearing inside | B4 | 269.875 mm10.625 in |
| Width of bearing outside | C4 | 269.875 mm10.625 in |
| Basic dynamic load rating, radial | Cr | 4,550,000 N1,022,931.655 lbf |
| Basic static load rating, radial | C0r | 7,800,000 N1,753,597.122 lbf |
| Fatigue load limit, radial | Cur | 710,000 N159,622.302 lbf |
| Mass | ≈m | 104 kg229.28 lbs |
Dimensions2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer | r1, 2 min | 1.5 mm0.059 in |
| Minimum chamfer | r3, 4 min | 3.3 mm0.13 in |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 120 °C248 °F |
Calculation factors4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y | e | 0.32 |
| Dynamic axial load factor | Y1 | 2.12 |
| Dynamic axial load factor | Y2 | 3.15 |
| Static axial load factor | Y0 | 2.07 |
Capabilities & suitability6 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Axial load capacity in both directions | Yes | |
| Suitable for grease lubrication | Yes | |
| Suitable for oil lubrication | Yes | |
| Unsealed design | Yes |
Manufacturer Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 386007 | |
| Brand | FAG | |
| SAP material number | 0875457210000 | |
| Base product | 2305091021 |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Tapered roller bearings, four-row, TQO-arrangement, opened design | |
| Short Description | Tapered roller bearing |
Technical Data15 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 317.5 mm | |
| Outside Diameter (D) | 422.275 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 4,550,000 N | |
| Basic Static Load Rating, Radial (C0R) | 7,800,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Fatigue Load Limit, Radial (Cur) | 710,000 N | |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.32 | |
| Dynamic Axial Load Factor (Y1) | 2.12 | |
| Minimum Chamfer (R1, 2 M) | 1.5 mm | |
| Dynamic Axial Load Factor (Y2) | 3.15 | |
| Width Of Bearing Inside (B4) | 269.875 mm | |
| Minimum Chamfer (R3, 4 M) | 3.3 mm | |
| Width Of Bearing Outside (C4) | 269.875 mm | |
| Static Axial Load Factor (Y0) | 2.07 |
