Polea de bloque único con rodamiento de bolas con giro y arraigo bloqueables, herrajes de polea marina de acero inoxidable 316 para escota de mayor de velero, carro de ancla de kayak y aparejo de vela de sombra

Descripción

Built for professional marine rigging and heavy-duty outdoor applications, this 50mm Ball Bearing Single Block Pulley is the ultimate hardware for systems requiring rapid line response and high dynamic load capacity. Advanced Low-Friction Mechanics: Unlike standard plain bearing pulleys, this block utilizes a precision Delrin polymer ball bearing system. This allows the 50mm sheave to turn sliding friction into rolling efficiency, ensuring your ropes glide smoothly without jamming, allowing you to sheet in or ease lines with minimal physical effort even under extreme tension. Marine-Grade Construction: The internal load-bearing axis, the top D-shackle, and the bottom becket pin are entirely constructed from marine-grade 316L stainless steel, offering exceptional saltwater corrosion resistance. The hollow-carved sideplates are engineered from UV-stabilized PA66 nylon with fiberglass reinforcement, maximizing structural strength while significantly reducing overall weight. Lockable Swivel & Becket Design: Designed for ultimate versatility, the top swivel head can rotate freely 360 degrees to eliminate rope tangles, or it can be locked into a fixed 0 or 90-degree position using the integrated set screw. The built-in bottom becket provides a secure tie-off point, making it perfect for assembling 2:1, 3:1, or 4:1 block and tackle mechanical advantage systems. Key Specifications & Use Cases: Accommodates ropes up to 10mm (3/8 inch). Safe Working

Características

• 【Advanced ball bearing system】 Engineered with high strength delrin ball bearings to provide ultra low friction under dynamic loads. It ensures smooth rope release and trimming without jamming, turning sliding friction into rolling efficiency.
• 【Marine grade materials】 Constructed with a 316L stainless steel load bearing axis and shackle for ultimate saltwater corrosion resistance. The sideplates use UV stabilized pa66 nylon with fiberglass, balancing extreme strength with a lightweight design.
• 【Lockable swivel head and becket】 The top shackle freely rotates 360 degrees to prevent line twisting, or can be locked at 0 or 90 degrees via an integrated set screw. The bottom becket pin serves as a secure anchor for block and tackle setups.
• 【High working load limit】 Built for extreme reliability. This 50mm sheave accepts rope sizes up to 10mm, featuring a safe working load of 450kg or 1000 lbs and an impressive breaking strength of 1000kg or 2200 lbs.
• 【Versatile application scenarios】 Perfectly designed for marine mainsheets, halyard tuning, and spinnaker systems. Beyond boating use, it is ideal for heavy duty outdoor canopy tensioning, arborist rescue hauling, and industrial hoisting.

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