NTN 4T-28985/28920 tapered roller bearings
What are the dimensions of a NTN 4T-28985/28920 tapered roller bearings? 180,000 Bore Diameter (mm) Manufacturing Service . Get Your Free, 180x300x118 Size (mm) Instant Quote！
| Size (mm) | 180x300x118 |
| Bore Diameter (mm) | 180,000 |
| Outer Diameter (mm) | 300,000 |
| Width (mm) | 118,000 |
| d | 180,000 mm |
| D | 300,000 mm |
| H | 118,000 mm |
| B | 118 mm |
| d2 | 200.8 mm |
| D1 | 260.4 mm |
| rs min | 3 mm |
| Number of lubrication holes | 3 |
| b | 14.1 mm |
| k | 6 mm |
| e | 0.38 |
| Y1 | 1.78 |
| Y2 | 2.66 |
| Y0 | 1.74 |
| Radial clearance class | CN |
| Mass | 33.9 kg |
| Dynamic load, C | 1,550 kN |
| Static load, C0 | 2,050 kN |
| Fatigue limit load, Cu | 123 kN |
| Nref | 1,200 rpm |
| Nlim | 1,700 rpm |
| Min operating temperature, Tmin | -40 °C |
| Max operating temperature, Tmax | 200 °C |
| Characteristic cage frequency, FTF | 0.43 Hz |
| Characteristic rolling element frequency, BSF | 7.14 Hz |
| Characteristic outer ring frequency, BPF0 | 8.67 Hz |
| Characteristic inner ring frequency, BPFI | 11.33 Hz |
| da min | 194 mm |
| Da max | 286 mm |
| ra max | 2.5 mm |
Detailed Parameters
parameter：
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