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W. Baelz & Sohn GmbH & Co.
· Koepffstrasse 5 · 74076 Heilbronn · Germany ·
www.baelz.de Seite | Page
Motorized Linear Actuator
baelz 373-E45
4.3 Principle of operation
Motorized linear actuators to operate control valves for fl ow regulation applications in control
and process technology. The self-locking threaded spindle/spindle nut is driven by an electric
motor via a gearbox. This converts the rotary movement into a linear movement. Load-
dependent limit switches dictate the end positions
4.3.1 Manual adjustment
Manual adjustment may only be carried out when the motor is not in motion. For the
adjustment, unscrew the cap nut from the top of the cover, remove the hand crank from the
bracket on the bottom of the actuator housing and insert it into the tube in the top of the cover.
Turn the crank handle using gentle pressure.
Summary of Contents for BA 373-E45
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