McKissick Ductile Iron Sheave - 1/4 in x 6-3/4 in - Self-Lubricating Bronze Bushing

Product Description

The McKissick Ductile Iron Sheave with self-lubricating bronze bushing bearing is a wire rope sheave engineered for lifting and rigging applications where a high sheave-to-rope diameter ratio, durable ductile iron construction, and low-maintenance bearing operation are required for reliable performance under sustained or intermittent 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 dependable material specification for sheaves operating across a wide range of industrial, marine, construction, and oil and gas rigging applications.

This sheave accommodates wire rope up to 1/4 in maximum cable diameter and features a 6-3/4 in outside diameter, providing an exceptionally high rope-to-sheave diameter ratio for this rope size that significantly reduces wire rope bending stress and extends rope service life in sustained or high-cycle 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 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 recognized manufacturer of sheaves, blocks, and rigging hardware for the oil and gas, construction, marine, and industrial sectors. This sheave is intended 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 1/4 in diameter

Uses: Overhead crane and hoist systems Block and tackle rigging assemblies Wire rope sheave replacement and maintenance Construction and industrial lifting applications Marine and offshore rigging systems Oil and gas lifting and pulling operations

Key Features: 1/4 in maximum wire rope capacity 6-3/4 in sheave outside diameter for exceptionally high sheave-to-rope 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 sustained-load, limited-access, and low-frequency maintenance rigging applications