| Bearing number | 4T-2878/2820 |
| Size (mm) | 34.925x73.025x22.225 |
| Bore Diameter (mm) | 34,925 |
| Outer Diameter (mm) | 73,025 |
| Width (mm) | 22,225 |
| d | 34,925 mm |
| D | 73,025 mm |
| T | 22,225 mm |
| B | 23,812 mm |
| C | 17,462 mm |
| ra1 max. | 3,3 mm |
| a | 5,5 mm |
| Da | 63 mm |
| db | 41 mm |
| ra max. | 0,8 mm |
| da | 42 mm |
| Db | 68 mm |
| Weight | 0,434 Kg |
| Basic dynamic load rating (C) | 62,5 kN |
| Basic static load rating (C0) | 75,5 kN |
| (Grease) Lubrication Speed | 5 200 r/min |
| (Oil) Lubrication Speed | 7 000 r/min |
| Calculation factor (e) | 0,37 |
| Calculation factor (Y0) | 0,9 |
| d1 | 54 mm |
| e | 0.37 |
| Y2 | 1.63 |
| Y0 | 0.9 |
| Mass | 0.43 kg |
| Dynamic load, C | 62.5 kN |
| Rating life coefficient, A2 | 1.4 |
| Static load, C0 | 75.5 kN |
| Fatigue limit load, Cu | 9.2 kN |
| Nlim (oil) | 7,000 rpm |
| Nlim (grease) | 5,200 rpm |
| Min operating temperature, Tmin | -40 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.42 Hz |
| Characteristic rolling element frequency, BSF | 6.33 Hz |
| Characteristic outer ring frequency, BPF0 | 7.23 Hz |
| Characteristic inner ring frequency, BPFI | 9.77 Hz |
| ra max | 0.8 mm |
| r1a max | 3.3 mm |
