支重轮用来支撑拖拉机的重量，同时在履带的导轨（轨链节）或履带板面上滚动，它还用来限制履带，防止横向滑脱。当拖拉机转向时支重轮迫使履带在地面上滑移。 支重轮常在泥水尘土中，且承受强烈冲击，因此要求它密封可靠、轮圈耐磨。
...业生交流网 - 关键词： 整体设计；驱动轮；支重轮；减速系统 [gap=1665]Keywords: the overall design, wheel, supporting wheels, slowing the Department ...
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若因螺栓折损而使相关部件破损及托链轮或支重轮磨偏，将大大增加维修费用。
If impairment of the relevant parts bolt breakage and entrusted sprocket or supporting wheels grinding side, will greatly increase the maintenance costs.
旋挖钻机履带式行走装置支重轮之间的距离及其数量的多少，尚缺少系统的计算公式。
There are few systematical formulas to calculate the roller number and the distances between rollers in crawler travel system of rotary pile drill.
它们特别适合于在采矿车，支重轮的大冷门，有经验的负载等，他们承载的轴向能力较低。
They are particularly suitable for heavy shock loads as experienced in mining cars, support rollers, etc. Their load-carrying capacity in the axial direction is low.
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