支承块严重磨损或滚轮跳动增大。
结构Structure：由底座、支承块、导轨、滑块、手柄、可调定位块、刻度尺等组成。
From the base, bearing blocks, rails, sliders, handles, adjustable positioning block, scales and other components.
分析落轴冲击对轨道结构产生的动态响应，比较弹性支承块及短轨枕埋入式整体道床轨道结构的动力性能，并用现场实测数据进行验证。
The track dynamic characteristic, which is verified by the on-the-spot experiment, is compared between the Low Vibration Track(LVT) and the short sleeper buried ballastless track.
管束式热交换器。管子分布。管底座钻孔直径。导向扇形块和支承板。
Tubular heat exchangers; tube pitches, diameter of bores in tube sheets, baffles and support plates.
为了使止推块自动进出必须控制上支承辊的下降位置。
It is required for the position-controlled lowering of the BUR so that the thrust blocks can be automatically move in and -out.
同时，设在上下支承辊装置侧面或机架上的压紧缸、腰块上的移动缸可实现轧辊轴承座与机架间的无间隙轧制。
In addition, using the hold down cylinder, the waist block and the shift cylinder can realize gap-less rolling.
同时，设在上下支承辊装置侧面或机架上的压紧缸、腰块上的移动缸可实现轧辊轴承座与机架间的无间隙轧制。
In addition, using the hold down cylinder, the waist block and the shift cylinder can realize gap-less rolling.
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