Harken Narrow High-Load Sheaves - 76 mm (3") - 691

Harken Narrow High-Load Sheaves are designed for masthead applications to improve sail handling, speed sail changes, and allow the use of smaller, lighter halyard winches. The sheave design combines sideload-carrying ball bearings with a PTFE composite bushing to efficiently handle radial loads.

Features:

• Narrow high-load sheave design for masthead applications
• Sideload-carrying ball bearings for smooth operation
• PTFE composite bushing supports radial loads
• Helps improve sail handling and sail changes
• Compatible with wire and rope applications

Specifications:

• Sheave Diameter: 3" (76 mm)
• Width: 5/8" (16 mm)
• Weight: 4.5 oz (128 g)
• Maximum Line Diameter: 3/8" (10 mm)
• Maximum Wire Diameter: 3/16" (5 mm)
• Center Pin Diameter: 1/2" (12.7 mm)
• Maximum Working Load: 4000 lbs (1814 kg)
• Breaking Load: 16,500 lbs (7484 kg)

Note: Breaking load based on use of solid 304 stainless shafts.