McKissick Ductile Iron Sheave - 3/4 in x 12 in - Self-Lubricating Bronze Bushing

Product Description

The McKissick Ductile Iron Sheave with self-lubricating bronze bushing bearing is a large-diameter, heavy-duty wire rope sheave engineered for demanding lifting and rigging applications where a high rope-to-sheave diameter ratio, durable sheave construction, and low-maintenance bearing operation are required under sustained or high-cycle loading. Ductile iron construction offers significant advantages over standard gray cast iron, providing greater tensile strength, improved impact resistance, and better ductility that allows the sheave to absorb shock loads without the brittleness associated with conventional cast iron. This makes ductile iron a preferred material specification for large sheaves operating in demanding environments across the oil and gas, construction, marine, and industrial sectors.

This sheave accommodates wire rope up to 3/4 in maximum cable diameter and features a 12 in outside diameter, providing a high rope-to-sheave diameter ratio that significantly reduces wire rope bending stress and extends rope service life in high-cycle or sustained-load applications. The self-lubricating bronze bushing bearing incorporates embedded lubricant within the bronze matrix that is released gradually at the bearing surface during operation, providing continuous lubrication without the need for regular external greasing. This feature makes the sheave particularly well suited to large block installations where maintenance access is limited, service intervals are infrequent, or simplified upkeep is preferred over more complex bearing arrangements requiring periodic re-lubrication.

McKissick is a well-established manufacturer of sheaves, blocks, and rigging hardware serving the oil and gas, construction, marine, and industrial sectors. This sheave is suitable for use as a replacement or component part within compatible McKissick block assemblies and rigging systems. All installations should comply with applicable load ratings, rigging standards, and inspection requirements to ensure safe and reliable operation throughout the service life of the assembly.

Material: Ductile Iron Sheave Self-Lubricating Bronze Bushing Bearing

Compatible With: McKissick block assemblies Wire rope up to 3/4 in diameter

Uses: Heavy-duty overhead crane and hoist systems Large block and tackle rigging assemblies Wire rope sheave replacement and maintenance Oil and gas lifting and pulling operations Construction and industrial heavy lifting applications Marine and offshore rigging systems

Key Features: 3/4 in maximum wire rope capacity 12 in sheave outside diameter for high rope-to-sheave diameter ratio Self-lubricating bronze bushing bearing eliminates need for regular external greasing Continuous bearing surface lubrication through embedded lubricant release Ductile iron construction for greater strength, impact resistance, and ductility versus gray cast iron Significantly reduces wire rope bending stress and extends rope service life Suitable for large-block, high-capacity, and limited-access rigging installations