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EX120-1 9196343 Komatsu Swing Motor Gearbox 9118328 Swing Reducer Gearbox

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July 28, 2026
Keyword: Swing Motor Gearbox
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Tags:
#Excavator Swing Gear Box #Final Drive Gearbox #Planetary Gear Reduction Box
Video Description:
In this dynamic demonstration, we showcase the Komatsu EX120-1 Swing Motor Gearbox in action. You'll see how this critical component enables smooth 360° rotation for excavators, learn about its internal planetary gear structure, and discover common operational issues and their root causes. Watch as we break down the working principles and maintenance insights for this essential swing reducer gearbox.
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