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Harken 2644 40mm Carbo Air Cheek Block transparent marine hardware

Harken

Harken 2644 40mm Carbo Air Cheek Block boating maintenance

SKU CH-RS8W-JEAC8

A 40 mm Carbo Air cheek block handles 10 mm line with a 220 kg working load for low-friction trimming

  • ColorTransparent
  • Low-friction Carbo Air design enables smooth trimming
  • 40 mm sheave handles up to 10 mm line
  • 220 kg working load supports heavy-duty rigging
  • Lightweight construction reduces weight aloft
  • Compact cheek block fits tight deck spaces

Harken 2644 40mm Carbo Air Cheek Block

The Harken 2644 is a 40mm Carbo Air cheek block designed for boating maintenance and running rigging. It serves sailors and riggers who need a lightweight, compact block for low-friction line handling on board.

40mm sheave with 10mm maximum line diameter

The block features a 40mm sheave that accepts line up to 10mm diameter. It delivers a maximum working load of 220kg or 485lb, making the load rating the key specification for matching the block to your control lines.

Cheek block format for fixed mounting

As a cheek block, it mounts flat to a surface with fasteners, requiring a suitable mounting point on deck or spar. Its compact Carbo Air construction keeps weight low while freeing up space compared to larger block assemblies.

Highlights

  • Low-friction Carbo Air design enables smooth trimming
  • 40 mm sheave handles up to 10 mm line
  • 220 kg working load supports heavy-duty rigging
  • Lightweight construction reduces weight aloft
  • Compact cheek block fits tight deck spaces

Specifications

ColorTransparent
BrandHARKEN

Questions about this item

How much load can the 40 mm sheave handle once it is on the boat?

The block is rated for a maximum working load of 220 kg or 485 lb, so it will hold that force when the line is under tension.

What line diameter does the 10 mm maximum limit allow in everyday use?

You can run line up to 10 mm or 3/8 in through the sheave; thicker rope will not fit the groove and will increase friction.

What space is needed to mount the cheek block on a flat surface?

The block has a 40 mm sheave, so allow at least that diameter plus the cheek plate thickness for a clear mounting area.

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