4T-782/772 bearing reference breakdown
Below we will break down the 4T-782/772 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)||104.78||d1 (mm)||139||D (mm)||180.98|
|B (mm)||48.01||C (mm)||38.1||T (mm)||47.62|
|ra max (mm)||3.5|
|Dynamic load C (kN)||285||Rating life coefficient A2||1.4||Static load C0 (kN)||430|
|Fatigue limit load Cu (kN)||47.5||Nlim (oil) (Tr/min)||2700||Nlim (grease) (Tr/min)||2000|
|Min operating temperature Tmin (°C)||-40||Max operating temperature Tmax (°C)||120||Characteristic cage frequency FTF (Hz)||0.44|
|Characteristic rolling element frequency BSF (Hz)||7.93||Characteristic outer ring frequency BPF0 (Hz)||9.24||Characteristic inner ring frequency BPFI (Hz)||11.76|