4T-744 bearing reference breakdown
Below we will break down the 4T-744 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:
Prefix4T - 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)||73.02||d1 (mm)||114.5||B (mm)||46.67|
|ra max (mm)||3.5|
|Dynamic load C (kN)||261||Rating life coefficient A2||1.4||Static load C0 (kN)||360|
|Fatigue limit load Cu (kN)||42||Nlim (oil) (Tr/min)||3200||Nlim (grease) (Tr/min)||2400|
|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)||6.55||Characteristic outer ring frequency BPF0 (Hz)||7.69||Characteristic inner ring frequency BPFI (Hz)||10.31|