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This kind of gearbox is equipped with limit screws which can be adjusted within ±5° at position in Open and Closed.
The worm /gear is designed with self locking function and easy to operate.
Indicator board of open degree is directly installed on output worm gear,so indication is accurate and Audio-visual.
The are two keyways apart with 90°degree set on the inner hole of worm gear for need.
The dedicated grease has been loade before leaving factory ,the shell is sealed up for waterfroof ClassIp65.
SD series gearbox
