? fW∶負(fù)荷系數(shù)通常作往復(fù)運(yùn)動的機(jī)械在運(yùn)轉(zhuǎn)中大都伴隨著振動或沖擊,特別是要正確計算在高速運(yùn)轉(zhuǎn)時所產(chǎn)生的振動以及頻繁啟動與停止所導(dǎo)致的所有沖擊則尤為困難,。因此,在速度,、振動的影響很大時,請用表3中所示的根據(jù)經(jīng)驗得到的負(fù)荷系數(shù)除以基本額定動負(fù)荷(C)。
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