zhiwenty 发表于 2011-10-28 10:39

滚动轴承内圈或外圈旋转时的缺陷频率

为什么好多人都说不管是内圈固定外圈旋转,或内圈旋转外圈固定,轴承内外圈的缺陷频率是一样的,但公式不一样啊,算出来的肯定不一样啊,
内圈旋转,外圈固定
FTF = (Hz/2)
BPFO = (N/2)Hz
BPFI = (N/2)Hz
BSF = (PHz/2B){1-[(B/P)cosCA]2}
Where:
Hz. = rotor speed in cps
N = number of rolling elements
B = ball diameter
P = pitch diameter
CA = contact angle

内圈固定,外圈旋转
FTF = (Hz/2)
BPFO = (N/2)Hz
BPFI = (N/2)Hz
BSF = (PHz/2B){1-[(B/P)cosCA]2}
Where:
Hz. = rotor speed in cps
N = number of rolling elements
B = ball diameter
P = pitch diameter
CA = contact angle

sunrain 发表于 2011-12-23 09:59

马上要做球轴承,不懂,过来学习下哈!
怎么没人回答呢?
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