4T-78250/78551 - NTN Single Row Taper Roller Bearing
4T-78250/78551 - NTN Single Row Taper Roller Bearing
Regular price
£115.47
Regular price
Sale price
£115.47
Unit price
per
Couldn't load pickup availability
4T-78250/78551 bearing reference breakdown
Below we will break down the 4T-78250/78551 bearing reference and provide an explanation for each section provided it can actually be broken down. We can split it into 3 parts the prefix, suffix and body of the item code.
The prefix can be found at the beginning of the bearing code:
Prefix
4T - The 4T- prefix designates a tapered roller bearing that is made of a special grade of case-hardened bearing steel and is interchangeable with other manufacturers taper with the same part number.| d (mm) | 63.5 | d1 (mm) | 103.5 | D (mm) | 140.03 |
| B (mm) | 33.24 | C (mm) | 23.52 | T (mm) | 36.51 |
| a (mm) | 45.01 | e | 0.87 | Y2 | 0.69 |
| Y0 | 0.38 | Mass (kg) | 2.54 |
| ra max (mm) | 2.3 |
| Dynamic load C (kN) | 171 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 212 |
| Fatigue limit load Cu (kN) | 25.9 | Nlim (oil) (Tr/min) | 3400 | Nlim (grease) (Tr/min) | 2600 |
| Min operating temperature Tmin (°C) | -40 | Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.43 |
| Characteristic rolling element frequency BSF (Hz) | 5.89 | Characteristic outer ring frequency BPF0 (Hz) | 7.28 | Characteristic inner ring frequency BPFI (Hz) | 9.72 |
