McKissick J-452 Trawl Block - 18 Ton - 18 in - Tapered Roller Bearing

Product Description

The McKissick J-452 Trawl Block in the Double Rig configuration is a heavy-duty commercial fishing block engineered for the demanding conditions of offshore trawl fishing operations requiring an 18 Ton working load capacity. Built around an 18-inch outside diameter manganese steel sheave, this block is designed to handle the large-diameter, high-tension wire ropes used in deep-sea trawling, providing exceptional wear resistance and structural strength for sustained operation in harsh marine environments. Manganese steel is well regarded in heavy-duty sheave applications for its outstanding toughness and resistance to abrasive wear, making it particularly well suited to the continuous wire rope contact and high-load cycling inherent in commercial trawl fishing operations.

The J-452 is equipped with tapered roller bearings that provide efficient load distribution across both radial and axial forces generated during active trawling. Tapered roller bearings are well suited to the combined loading conditions of trawl block applications, where the block must handle the direct pull of the trawl wire along with lateral forces introduced by vessel motion and wire fleet angles. The double rig configuration accommodates two rope or wire runs simultaneously, supporting the paired trawl wire arrangements common in commercial bottom and mid-water trawl fishing operations and enabling efficient net handling across a range of vessel and gear configurations.

Designed specifically for commercial fishing vessel applications, the McKissick J-452 Double Rig Trawl Block is built to withstand the repetitive high-load cycles of active fishing operations, including net setting, towing, and hauling. The manganese steel sheave provides superior resistance to the groove wear caused by continuous wire rope contact under heavy loads, extending sheave service life and reducing replacement frequency compared to standard steel sheave alternatives. This block is a reliable choice for fishing vessel operators requiring dependable, long-service performance in demanding offshore fishing environments. Always verify working load limits, wire rope compatibility, and mounting configuration prior to installation and use.

Material:

Manganese Steel Sheave Tapered Roller Bearings

Compatible With:

Wire Rope and Cable for Commercial Trawl Fishing Applications

Uses:

Commercial Offshore Trawl Fishing Operations Bottom Trawl and Mid-Water Trawl Net Handling Trawl Wire Setting, Towing, and Hauling Double Rig Paired Wire Rope Configurations Heavy Marine Deck Equipment Applications

Key Features:

18 Ton Capacity 18 in Sheave Outside Diameter Double Rig Configuration for Paired Trawl Wire Arrangements Manganese Steel Sheave for Outstanding Wear Resistance and Toughness Tapered Roller Bearings for Combined Radial and Axial Load Performance Built for High-Cycle Commercial Fishing and Harsh Marine Environments McKissick J-452 Series Heavy-Duty Trawl Block Design