McKissick Bar Steel Sheave - 3/8 in x 4 in - Roller Bearing

Product Description

 The McKissick Bar Steel Sheave with roller bearing is a wire rope sheave engineered for crane, hoist, and rigging block applications where maximum rotational efficiency, reliable load transfer, and cost-effective construction are required in a compact form factor. Featuring a 4 in outside diameter and a roller bearing configuration, this sheave is designed to accept wire rope up to 3/8 in diameter, making it well-suited for light to medium capacity lifting operations in construction, industrial, marine, and general material handling environments where space constraints require a smaller sheave diameter. Bar steel construction is machined from solid bar stock, providing consistent material properties, good dimensional accuracy, and reliable performance in standard rigging block applications.

The roller bearing configuration provides the highest level of rotational efficiency and load-carrying capacity among available bearing types, significantly reducing friction during operation and enabling smooth, consistent sheave rotation under both light and heavy loads. Roller bearings are particularly well-suited for high-speed, high-cycle, or continuous-duty applications where minimizing friction and heat generation are critical to maintaining performance and extending bearing service life. The compact 4 in outside diameter makes this sheave well-suited for use in confined rigging arrangements or block assemblies where larger diameter sheaves cannot be accommodated, while the roller bearing ensures efficient rope travel is maintained throughout the service life of the assembly.

The machined rope groove is precisely profiled to match the wire rope diameter, ensuring even load distribution across the rope cross-section and minimizing groove and rope wear throughout the service life of the assembly. This sheave is designed for use as a replacement or component part within McKissick and compatible wire rope block assemblies. Proper shaft fit, lubrication, and alignment are essential to achieving rated performance and maximizing service life in lifting and rigging operations.

Material: Bar Steel

Compatible With: Wire Rope up to 3/8 in Diameter Standard Bore Shaft and Pin Arrangements McKissick Wire Rope Block Assemblies Compatible Replacement Block Assemblies

Uses: Light to Medium Duty Crane and Hoist Block Assemblies Wire Rope Guidance and Load Transfer Construction and Industrial Rigging Marine and Offshore Block Systems General Material Handling Applications High-Speed and Continuous-Duty Rigging Applications Confined Space and Compact Rigging Arrangements Replacement Sheave for Block Assemblies

Key Features: 4 in Sheave Outside Diameter 3/8 in Maximum Wire Rope Capacity Roller Bearing for Maximum Rotational Efficiency and Load Capacity Bar Steel Construction for Consistent Material Properties and Dimensional Accuracy Compact Diameter Suitable for Space-Constrained Rigging Arrangements Machined Rope Groove Profiled for Even Load Distribution Suitable for High-Speed, High-Cycle, and Continuous-Duty Applications McKissick Quality Construction