Harken 2644 40mm Carbo Cheek Block Ball Bearing Pulley

The Harken 2644 40mm Carbo Cheek Block is a lightweight, high-performance fixed pulley designed for sail control systems requiring smooth operation, exceptional strength, and compact installation. As part of Harken's renowned Carbo Air® range, this cheek block is engineered to provide efficient low-friction line handling for cruising yachts, racing yachts, trailer sailers, dinghies, and performance sailing boats.

Featuring a 40mm UV-stabilised Carbo sheave running on precision ball bearings, the Harken 2644 delivers effortless line movement under both light and moderate loads. The fixed cheek block design allows direct mounting to masts, booms, decks, spars, and bulkheads, making it ideal where a low-profile, permanently mounted block is required.

The side plates are manufactured from fiber-reinforced composite material with marine-grade stainless steel load straps, providing exceptional strength while keeping weight to a minimum. This corrosion-resistant construction ensures reliable performance in harsh New Zealand marine environments.

Suitable for a wide range of control systems including halyards, reefing lines, outhauls, cunninghams, vangs, and furling controls, the Harken 2644 offers the durability and smooth performance expected from one of the world's leading sailing hardware manufacturers.

Key Features

• Genuine Harken 2644 Carbo Air® Block
• 40mm low-friction Carbo sheave
• Fixed cheek block design
• Precision ball bearing system
• Fibre-reinforced composite side plates
• Marine-grade stainless steel load straps
• Lightweight, compact construction
• UV-resistant materials
• Corrosion-resistant design
• Smooth, efficient line handling
• Low-profile permanent installation
• Trusted Harken performance

Why Buy the Harken 2644 from Barton Marine NZ?

At Barton Marine NZ, we supply genuine Harken sailing hardware trusted by New Zealand sailors, yacht clubs, and professional riggers. The Harken 2644 is an excellent choice for upgrading sail handling systems with lightweight, reliable, and maintenance-free performance.

Perfect for:

• Halyard systems
• Reefing lines
• Outhauls
• Boom vangs
• Cunningham controls
• Furling systems
• Traveller controls
• Dinghy rigging
• Keelboats
• Cruising yachts

Technical Specifications

• Sheave Ø: 40 mm (1 9/16″) 

• Max line Ø: 10 mm / 3/8″ 

• Working load: 220 kg (485 lb) 

• Breaking load: 735 kg (1 620 lb) 

• Weight: 34 g (1.2 oz) 

• Overall length: 70 mm (2¾″) 

Common Applications

The Harken 2644 is commonly used for:

• Halyard leads
• Reefing systems
• Boom vang controls
• Cunningham systems
• Outhaul controls
• Furling line leads
• Deck organisers
• Mast-mounted control systems
• Dinghy rigging
• Performance yacht control systems

Performance Benefits

The Harken 40mm Carbo Cheek Block provides:

• Smooth low-friction operation
• Fast sail adjustment
• Lightweight performance
• Excellent corrosion resistance
• Quiet line handling
• Long service life
• Maintenance-free reliability
• Professional sailing performance

Harken's Carbo Air® blocks are recognised for combining lightweight composite construction with high load capacity and efficient ball-bearing performance for both racing and cruising applications.