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Bard part number 8602-075BX is an OEM direct coupled actuator supplied boxed and intended to drive an airside damper by mounting directly to the damper shaft, helping your Bard wall-mounted unit accurately position intake or ventilation components as commanded by the economizer or control sequence. When an actuator is weak, sticking, or failing to hold position, you may see poor ventilation control, uneven temperatures, or economizer issues, so replacing it with the correct Bard actuator helps restore reliable damper movement and proper airflow management. Match this 8602-075BX actuator to your unit model and control setup before ordering, since actuator style and wiring can vary by application.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.