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NA4901LL/3AS - NTN Machined Needle Roller Bearing With Inner Ring
NA4901LL/3AS - NTN Machined Needle Roller Bearing With Inner Ring
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NA4901LL/3AS bearing reference breakdown
Below we will break down the NA4901LL/3AS 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
NA - Machined ring needle roller bearing with inner ringThe suffix can be found at the end of the bearing number:
Suffix
/3AS - Which denotes grease shell alvania 3The body of the bearing reference is what is left after removing the suffix and the prefix:
Body
49 - Single Row Needle Type with seals01 - 12mm Bore
| d (mm) | 12 | D (mm) | 24 | C (mm) | 13 |
| F (mm) | 16 | rs min (mm) | 0.3 | Dw (mm) | 2 |
| Lw (mm) | 7.3 | k (mm) | 2.5 | B (mm) | 14 |
| Mass (kg) | 0.03 |
| da min (mm) | 14 | Da max (mm) | 18 | ras max (mm) | 0.3 |
| Db max (mm) | 22 |
| Cr (kN) | 7.75 | C0r (kN) | 9.7 | Nlim (grease) (Tr/min) | 10000 |
| Min operating temperature Tmin (°C) | -20 | Max operating temperature Tmax (°C) | 100 | Characteristic cage frequency FTF (Hz) | 0.44 |
| Characteristic rolling element frequency BSF (Hz) | 8.89 | Characteristic outer ring frequency BPF0 (Hz) | 8 | Characteristic inner ring frequency BPFI (Hz) | 10 |
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