McKissick 407 Super Champion Tail Board Snatch Block - 1-1/4 in - 30 Ton - 20 in - Roller Bearing

Product Description

The McKissick 407 Super Champion Tail Board Snatch Block is a heavy-duty single-sheave block with tail board configuration, designed for wire rope cable applications requiring a securely mounted, fixed-anchor block for high-capacity load redirection and pulling operations in oilfield, offshore, logging, and heavy construction environments. Rated for a 30-ton working load limit, this block is built around a 20-inch outside diameter sheave supported by a roller bearing, delivering smooth, low-friction rope travel and dependable performance under sustained heavy loads. The 407 series accommodates wire rope cable up to 1-1/4 inches in diameter.

The tail board attachment provides a flat, bolted mounting interface that allows the block to be securely fastened to a vehicle frame, sled, skid, or structural anchor, keeping the block fixed in position during high-tension pulling and rigging operations. This configuration is commonly used in logging, land clearing, oilfield, and heavy construction applications where a stationary anchor block is required to redirect a winch or crane line efficiently under high load. The roller bearing sheave minimizes friction and heat buildup during operation, supporting reliable performance in high-cycle and sustained-load environments, and offers improved sheave efficiency compared to bushing bearing configurations under repeated heavy loading.

The 20-inch sheave diameter provides a generous rope bend radius that significantly reduces wire rope fatigue and extends rope service life across repeated heavy loading cycles, an important advantage in high-capacity tail board applications where large-diameter wire rope is subjected to sustained tension and repeated bending. The Super Champion designation reflects McKissick's higher-strength design tier, engineered for demanding applications where greater working load limits and more robust construction are required. This block is well suited for use with heavy wire rope winches, cranes, and rigging systems in logging, oilfield, offshore, marine, and heavy industrial load-handling operations.

Material:

Steel (body, cheek plates, and tail board) Roller bearing sheave

Compatible With:

Wire rope cable up to 1-1/4 in diameter

Uses:

Fixed-anchor load redirection in heavy wire rope rigging systems Tail board mounting to vehicle frames, sleds, skids, or structural anchors Mechanical advantage in high-capacity pulling and lifting applications Winch and crane line deflection Logging, oilfield, offshore, marine, and heavy construction rigging

Key Features:

30 Ton working load limit 20 in sheave outside diameter Tail board configuration for secure fixed-surface mounting Roller bearing for low-friction, high-cycle operation Accommodates wire rope cable up to 1-1/4 in diameter Generous sheave diameter for reduced wire rope fatigue and extended rope service life McKissick 407 Super Champion series