Bearing system defaults
Bearing sealing systems are also evolving. The design is constantly being updated to reduce friction and lower operating temperatures, thereby extending grease life and maintenance intervals.
There are also definitions of axle loads.
Light rail cars: 14t high-speed cars: 17 t (new) heavy-duty subway cars and EMUs: 18 ts locomotives and trucks: 25 t or less, heavy-duty trucks: 32 t to 40 t
At present, the axle weight of domestic high-speed rail is generally required to be within 20T, so the requirements are not very harsh,
Then about the wheel diameter, we generally have default values.
High-speed, EMU and coach vehicles: 750 to 950 mm
Locomotives: 1 000 to 1 300 mm
Bearing wagons: 900 to 1 000 mm
