| 摘要 |
A hydraulic stabilizer for a railway freight car truck, the truck comprising a bolster and end frames supporting at least one railway axle/wheel set, the hydraulic stabilizer being contained within the area of the spring set between the bolster and an end frame, said hydraulic stabilizer comprising a housing, said housing having a hydraulic fluid reservoir, a hydraulic cylinder at least partially contained within said housing, a working piston generally aligned within said cylinder having a piston rod for axial movement within said cylinder to dampen relative movement between said bolster and said end frame, an oil seal affixed intermediate said cylinder and said piston rod, and said oil seal having at least two lip profiles extending radially inward of said cylinder.
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