How to shield and seal the inlet of industrial servo cables?

The cable entry point of the servo cabinet is a weak point in shielding, requiring simultaneous attention to shielding continuity, environmental sealing, and stress relief. Etymotics Solutions uses EMC cable glands. The gland should be an all-metal structure with an internal elastic metal clamp or conductive rubber ring, enabling 360-degree electrical connection while compressing the cable shield. The gland body fits tightly into the openings on the cabinet wall via threads or snaps, and the contact surfaces must be conductive. For multiple cables, a perforated dress panel can be used. When selecting a gland, ensure the orifice diameter matches the cable outer diameter to guarantee a shielding contact resistance of <10mΩ after compression and an IP54 or higher protection rating. For unshielded cables, a gland with a filter can be used, integrating signal filtering and shielding. Proper installation of the gland maintains cable shielding effectiveness, prevents the "pigtail" effect, and effectively protects against dust and water.