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1 一平皮帶輪傳動裝置,其傳動軸相距2000 mm,兩皮帶輪之外徑各為600 mm 及350 mm,則以開口帶(open belt)方式傳動時,皮帶長度約為多少mm?(註:π≒3.14) 97 統測
A 4500
B 5000
C 5500
D 6000

L = π2(D+d)+2C+(D-d)24C

= π2(600+350)+2×2000+(600-350)24×2000

= 1491.5+4000+7.8125=5499.3125(mm)