4T-HM801349/HM801311 bearing reference breakdown
Below we will break down the 4T-HM801349/HM801311 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.
HM - Indicates that the bearing is part of the heavy medium series
|d (mm)||40.48||D (mm)||82.55||B (mm)||28.58|
|C (mm)||23.02||T (mm)||29.37||a (mm)||24.7|
|rs min (mm)||3.5||r1s min (mm)||0.8||e||0.55|
|ra max (mm)||3.5|
|Dynamic load C (kN)||87||Rating life coefficient A2||1.4||Static load C0 (kN)||117|
|Nlim (oil) (Tr/min)||6200||Nlim (grease) (Tr/min)||4700||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)||6.87|
|Characteristic outer ring frequency BPF0 (Hz)||7.79||Characteristic inner ring frequency BPFI (Hz)||10.21|