4T-66584/66520 bearing reference breakdown
Below we will break down the 4T-66584/66520 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)||53.98||d1 (mm)||92||D (mm)||122.24|
|B (mm)||31.75||C (mm)||23.81||T (mm)||33.34|
|ra max (mm)||3.5|
|Dynamic load C (kN)||134||Rating life coefficient A2||1.4||Static load C0 (kN)||163|
|Fatigue limit load Cu (kN)||19.9||Nlim (oil) (Tr/min)||4200||Nlim (grease) (Tr/min)||3100|
|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)||6.12||Characteristic outer ring frequency BPF0 (Hz)||7.26||Characteristic inner ring frequency BPFI (Hz)||9.74|