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Technical guidance for industrial and commercial doors garage door Cable Drums When facility managers and supply chain buyers struggle to keep sectional doors lifting evenly and safely, the reason is often a small part that people do not talk about much. Cable drums guide the lifting cable, match the weight of the door and transfer torque from the torsion shaft. This page shows how to specify drums for standard lift or high lift doors, how to read drum codes, and how to link them with shafts, couplers and brackets in one stable set. The promise is simple. Reliable lifting, predictable service life, less downtime. The answer begins with better knowledge. … 続きを読む