WU WB WV 버티컬감속기 상축감속기 하축감속기 WU WB WV상축 49하축 1/10 1/20 1/30 1/40 1/50 1/60 WU WB WV상축 60하축 1/10 1/20 1/30 1/40 1/50 1/60 WU WB WV상축 77하축 1/10 1/20 1/30 1/40 1/50 1/60 WU WB WV상축 88하축 1/10 1/20 1/30 1/40 1/50 1/60 WU WB WV상축 120하축 1/10 1/20 1/30 1/40 1/50 1/60 WU WB WV상축 125하축 1/10 1/20 1/30 1/40 1/50 1/60 WU WB WV상..