Importance of Slip Ring Drains

Posted on Tuesday, May 26, 2015 in UEA Blog


Sealing a slip ring is important when dealing with dirty, dusty, and wet environments. When a slip ring is used in conditions where it may come in contact with water due to road spray, general cleaning of the unit, or just rainfall itself, sealing is vitally important to keep the slip ring assembly and your components and equipment running properly. We have many different sealing methods available for use when the slip ring is mounted above the center of rotation, but what about when the slip ring is inverted (upside-down) or mounted under the center of rotation? We have many options for these circumstances as well to keep water and moisture out of the slip ring assembly.

Something to keep in mind when installing a slip ring that will be inverted is that water can, and in some situations, will enter the slip ring assembly despite the best efforts and sealing methods to keep it out. In these situations we use drain holes and breathers in the cover to let the water escape and air circulate so the moisture can evaporate out. This prevents the water from being sealed in and potentially shortening the life of your assembly. We also include splash guards behind the drain holes inside the cover to keep water from being able to get to the internals of the slip ring. Direct spray due to cleaning and road spray that could be kicked up onto the assembly while a piece of equipment is moving are two examples where moisture can get into the slip ring enclosure.

If you know your equipment will potentially be exposed to water or moisture buildup, let us know and we can advise you on some of our sealing methods and options for covers that will best suit your needs.

Ryan Tradel
Design Tech. – Engineering

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