Crosby Western Try Net Block - 5 Ton - 6 in NDL

Description du produit

he Crosby F-454 Western Try Net Block is a heavy-duty marine block designed for commercial fishing and trawling operations requiring high-cycle rope and wire handling under sustained working loads. Rated at 5 Ton with a 6 in sheave outside diameter, the F-454 shares the same capacity and sheave size as the F-453 but is distinguished by its needle bearing construction, which delivers lower rolling friction and smoother sheave rotation under load compared to a bronze bushing design. This makes the F-454 particularly well suited to applications where line speed, efficiency of pull, and reduced operating effort are priorities.

The needle bearing used in the F-454 consists of small-diameter cylindrical rollers arranged radially around the sheave pin, providing a large contact area relative to the bearing's compact size and resulting in high load capacity with minimal friction. In commercial fishing applications, this translates to easier hauling, reduced wear on wire rope and synthetic lines, and more responsive sheave rotation during try net deployment and retrieval cycles. The needle bearing design is a step up in mechanical efficiency from bushing-type bearings and is preferred in higher-cycle or performance-oriented marine block applications.

The F-454 Western try net block configuration is purpose-built for try net fishing systems used to sample catch density ahead of main trawl deployment. As part of the Crosby Group's marine block lineup, the F-454 is built to withstand the corrosive, wet, and high-cycle demands of regular commercial fishing service. It is the needle bearing counterpart to the F-453 bronze bushing model, giving operators the choice between low-maintenance bushing performance and the higher mechanical efficiency of needle bearing construction within the same 5 Ton, 6 in sheave platform.

Material: Forged steel body Steel sheave Needle bearing

Compatible With: Wire rope and synthetic lines appropriate for 6 in sheave diameter Standard trawling and try net rigging hardware Marine lifting and rigging assemblies rated to 5 Ton or greater

Uses: Try net deployment and retrieval in commercial trawling operations General trawling and marine rigging block applications Wire rope and synthetic line handling under sustained load Offshore and coastal commercial fishing operations Marine lifting and load handling where reduced friction and smooth sheave rotation are required

Key Features: 5 Ton rated capacity 6 in sheave outside diameter Needle bearing for low-friction, high-efficiency sheave rotation Higher mechanical efficiency compared to bushing-type bearings Crosby F-454 series Western try net block configuration Needle bearing counterpart to the F-453 bronze bushing model Suitable for wire rope and synthetic line Built for commercial fishing and trawling service