Gear box with irreversible worm and worm-wheel. Two shafts with free ends, the wormwheel of special bronze and worm are equipped with ball bearings for noiseless operation. All protruding shaft ends are sealed against oil leakage, so the unit can be mounted in any position: the horizontal position is recommended. The limit switch shaft with its own drive worm is integrated in the gear box and runs in oil. Standard voltage 3-phase AC 230/400 V. (special voltage at options).
The limit switch:
On the reduction is a box mounted with limit switch ES10, this can be connected with a separate controller which can be chosen out of the LST/WST range. The limit switch consist out of a potential free switch, a control current limit switch for the end positions and a safety switch for each side of rotation.
The Emergency chain operation:
In option an emergency chain drive type RKG can be supplied. The RKG is mounted in front of the engine for a horizontal or vertical placement. Only one chain for manual operation. The integrated security switch avoids that the engine starts during the emergency operation. During the use of the emergency unit the end positions continue preserve.
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