4 Pole / 1728 RPM, 60Hz

Approved by Underwriters Laboratories specification number UL 674 Class I, Groups C & D, Class II, Groups E, F and G.  U.L. File Reference E 74479. 

Commonly used in applications such as screen conveyors, dewatering screens, shale shakers, drying shakers, mud conditioners, and other fluid recovery systems.  4 Pole vibrators can also be used on storage bins and silos for intermediate sized materials.