Simotics Model SD661 is suited for use in the petrochemical, energy and other industries and designed for specialized use in air-cooled heat exchanger applications. The full cast iron construction, corrosion-resistant hardware, bearing isolators on both ends, IP56 ingress protection and T-drains at the lowest point on both ends provide a high degree of mechanical integrity. It is suitable for horizontal, shaft up or shaft down mounting and is equipped with oversized roller bearings for belted applications. Other features include an oversized and 90° rotatable cast iron conduit box, dual drill foot mounting holes and automatic grease relief fittings.