bogies as well as t he dynamics performance , operaРbearings for heavy haul freight cars abroad are de tion , inspection and repair of t he bogies wit h t heРscribed. The technical development s of axles and quadric crank mechanism. And suggestions are givenРbearings for heavy haul railway freight cars in our on the improvement of t he mechanism and it s applicaРcountry are discussed. tion in our country.Р Key words : freight car ; axle ; bearings ; tech Key words :bogie wit h quadric crank mechanism ;Рnique ; develop ment freight car bogie ; quadric crank mechanism ; dynamР ics performanceР Analysis of the Rolling Stock Dispatching andР Management System at Present in Our Country Manufacture Technology for Center Sills of theР and Some Tentative Ideas 100 t Special Wagons for Transport of
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