这个门是要用手操作的。
还有你是要自动的还是用手操作的传动系统?
评级建立在强度计算上。基本的静态强度等级、或用手操作的设备以上齿轮的3倍,大约是100每分钟转速的评价。
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears, is approximately 3 times the 100 RPM rating.
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