| Bearing number |
4T-30311D |
| Size (mm) |
55x120x31.5 |
| Bore Diameter (mm) |
55 |
| Outer Diameter (mm) |
120 |
| Width (mm) |
31,5 |
| d |
55 mm |
| D |
120 mm |
| T |
31,5 mm |
| B |
29 mm |
| C |
21 mm |
| ra1 max. |
2 mm |
| a |
38 mm |
| r min. |
2,5 mm |
| r1 min. |
2 mm |
| da min. |
67 mm |
| Da min |
94 mm |
| Da max. |
110 mm |
| db max. |
68 mm |
| Db min. |
113 mm |
| ra max. |
2 mm |
| Sa |
4 mm |
| Sb |
10,5 mm |
| Weight |
1,59 Kg |
| Basic dynamic load rating (C) |
132 kN |
| Basic static load rating (C0) |
154 kN |
| (Grease) Lubrication Speed |
2 900 r/min |
| (Oil) Lubrication Speed |
3 800 r/min |
| Calculation factor (e) |
0,83 |
| Calculation factor (Y0) |
0,4 |
| d1 |
88.5 mm |
| rs min |
2.5 mm |
| r1s min |
2 mm |
| e |
0.83 |
| Y2 |
0.73 |
| Y0 |
0.4 |
| Mass |
1.59 kg |
| ISO 355 reference |
T7FB055 |
| Dynamic load, C |
132 kN |
| Rating life coefficient, A2 |
1.4 |
| Static load, C0 |
154 kN |
| Fatigue limit load, Cu |
18.8 kN |
| Nlim (oil) |
3,800 rpm |
| Nlim (grease) |
2,900 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 |
5.52 Hz |
| Characteristic outer ring frequency, BPF0 |
6.76 Hz |
| Characteristic inner ring frequency, BPFI |
9.24 Hz |
| da max |
68 mm |
| db min |
67 mm |
| Da max |
110 mm |
| Db min |
113 mm |
| Ca min |
4 mm |
| Cb min |
10.5 mm |
| ra max |
2 mm |
| r1a max |
2 mm |
| Category |
Roller Bearings |
| Inventory |
0.0 |
| Minimum Buy Quantity |
N/A |
| Product Group |
B04336 |