Harken 2644 40 mm Carbo Cheek Block
- Brand:
- Harken
- Part no:
- 2644
Image: Fisheries Supply
Where to buy
View on Amazonpaid link
Specifications
- Sheave diameter
- 40 mm
- Bearing
- Ball
- Max working load
- 220 kg
- Breaking load
- 735 kg
Manuals
- Installation guide (PDF)180sails.com
The Harken 2644 is a 40 mm Carbo cheek block made of fiber-reinforced composite. It weighs 1.2 oz and has ball bearings, with a UV-stabilized sheave and sideplates. It takes line up to 3/8 inch and has a 485 lb safe working load. The listed type is cheek, and the whole block weighs just 1.2 oz.
Our take
A 485 lb safe working load at 1.2 oz is the 2644's trade: very little weight for a block that still takes line up to 3/8 inch. Ball bearings and UV-stabilized sideplates mean it is built for sun exposure and free running.
From our buying guide
Ball-bearing blocks give the lowest friction on lines running under moderate loads. Plain bearings have more friction, but handle very high and static loads.
Check before you buy:
- A ratchet block is rated for the full sheet load.
- Any becket's load limit suits the job, since a becket can be rated below the block itself.
- A soft-attach block will be looked after, since Harken warns soft attachments are prone to wear and recommends them only for regularly maintained race boats.
