McKissick Lead Block - 7/8 in - 18 in - 12 in L X - 20 in W

Product Description

The McKissick Series 461 Lead Block is a heavy-duty vertical configuration block engineered for wire rope lead management in oilfield, drilling, and industrial pulling applications. Designed to accommodate wire rope up to 7/8 inch in diameter and featuring an 18-inch sheave outside diameter, the Series 461 provides the rope bend radius required to protect wire rope integrity under sustained load and high-cycle operating conditions. The vertical orientation of this lead block is specifically suited to applications where the wire rope must be redirected along a vertical plane, such as in derrick, mast, or fixed overhead rigging installations where controlled rope alignment into a hoisting system is required.

With overall dimensions of 12 inches in length by 20 inches in width, the Series 461 offers a more compact footprint than larger lead block configurations while still delivering the sheave diameter and structural integrity needed for demanding wire rope lead applications. The robust housing construction is characteristic of McKissick's lead block designs, which are intended for fixed installation points where the wire rope enters or exits a block-and-tackle system at a controlled angle. Proper fleet angle management is critical in lead block applications to minimize rope wear, reduce side loading on the sheave, and ensure even spooling on the drum.

McKissick has a long-established reputation in the oilfield and industrial block industry for precision manufacturing and load-rated performance. The Series 461 vertical lead block is designed for integration into larger rigging and hoisting systems where consistent wire rope alignment and load transfer are essential to safe and efficient operation. All mounting hardware, attachment points, and associated rigging components should be selected and rated to match the demands of the intended application.

Material:

Steel construction (housing and sheave)

Uses:

Wire rope lead management in oilfield and drilling operations Vertical wire rope redirection Derrick and mast rope alignment Fixed installation in block-and-tackle hoisting systems Heavy industrial pulling and rigging systems

Key Features:

18 in sheave outside diameter Accepts up to 7/8 in maximum cable diameter Vertical block configuration 12 in L x 20 in W overall dimensions Heavy-duty construction for oilfield and industrial applications McKissick Series 461