NTN TMB305X77 deep groove ball bearings
The online NTN TMB305X77 deep groove ball bearings parts store gives you immediate 280x500x130 Size (mm) access to a selection of more than 500 Outer Diameter (mm) 1.4 million new, used, remanufactured. 280 Bore Diameter (mm)
| Size (mm) | 280x500x130 |
| Bore Diameter (mm) | 280 |
| Outer Diameter (mm) | 500 |
| Width (mm) | 130 |
| d | 280 mm |
| D | 500 mm |
| B | 130 mm |
| C | 130 mm |
| r min. | 5 mm |
| da min. | 302 mm |
| Da max. | 478 mm |
| ra max. | 4 mm |
| Weight | 110 Kg |
| Basic dynamic load rating (C) | 2 310 kN |
| Basic static load rating (C0) | 3 800 kN |
| (Grease) Lubrication Speed | 770 r/min |
| (Oil) Lubrication Speed | 1 000 r/min |
| Calculation factor (e) | 0,26 |
| Calculation factor (Y0) | 2,51 |
| Calculation factor (Y1) | 2,57 |
| d2 | 355 mm |
| D1 | 434 mm |
| rs min | 5 mm |
| Number of lubrication holes | 8 |
| b | 20 mm |
| k | 12 mm |
| Associated sleeve reference | H3156 |
| e | 0.26 |
| Y1 | 2.57 |
| Y2 | 3.83 |
| Y0 | 2.51 |
| Radial clearance class | CN |
| Dynamic load, C | 2,310 kN |
| Static load, C0 | 3,800 kN |
| Fatigue limit load, Cu | 309 kN |
| Nref | 1,000 rpm |
| Nlim | 1,200 rpm |
| Min operating temperature, Tmin | -40 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.43 Hz |
| Characteristic rolling element frequency, BSF | 7.28 Hz |
| Characteristic outer ring frequency, BPF0 | 8.67 Hz |
| Characteristic inner ring frequency, BPFI | 11.33 Hz |
| da min | 300 mm |
| db min | 296 mm |
| Ce min | 28 mm |
| Da max | 480 mm |
| ra max | 4 mm |
Detailed Parameters
parameter：
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Bearing number 12580/12520 Size (mm) 20.638×49.225×19.845 Brand NACHI Bore Diameter (mm) 20.638 Outer Diameter (mm) 49.225 Width (mm) 19.845 d 20.638 mm D 49.225 mm T 19.845 mm B 19.845 mm C 15.875 mm a 7.1 mm r1 min. 1.5 mm r2 min. 1.5 mm Weight 0.181 Kg Basic dynamic load rating (C) 36000 kN