某滾珠軸承之基本額定負荷為 1800 kg，若在 1200 rpm 之轉速下操作，欲使其壽命有 500 小時，則所允許之轉數為多少轉? 請問怎麼算?
回答 (2)
2015-12-10 10:17 pm
滾珠軸承基本額定負荷Fs=1800 kg，壽命L=500小時，轉數=?rpm
Look up bearing tables from machine design:
Fs = Static load = 1800 kg
Fd = Dynamic load = 2930 kg
Basic formula for ball bearing:
(100Fd/Fs)^3 = 60*n*L
n = (100Fd/Fs)^3 * 1/(60*L)
= (100*2930/1800)^3 * 1/(60*500)
= 162.8^3 / 30000
= 143.8 rpm
Look up bearing tables from machine design:
Fs = Static load = 1800 kg
Fd = Dynamic load = 2930 kg
Basic formula for ball bearing:
(100Fd/Fs)^3 = 60*n*L
n = (100Fd/Fs)^3 * 1/(60*L)
= (100*2930/1800)^3 * 1/(60*500)
= 162.8^3 / 30000
= 143.8 rpm
2015-12-14 3:12 pm
你好 請問Fd = Dynamic load = 2930 kg 如何算出來嗎?
收錄日期: 2021-04-30 19:53:21
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151210042748AABwwXL