Harken 2638 40mm Double Swivel Carbo Airblock
HARKEN 2638
Double Carbo AirBlock® - 40mm
Sheave Diameter 1-9/16"
Low-friction Carbo AirBlocks® are lightweight, strong, reliable, and affordable.
Carbo AirBlocks® are 60% stronger and 30% lighter than Harken's Classic blocks. The Nylon-resin side plates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Sheaves spin on high-load ball bearings with fitted races for low-friction operation. Ball bearings, sheave and sideplates are UV-stabilized with carbon-black additive for maximum protection.
Use the 40mm Carbo for jib and mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats.
Like all AirBlocks®, the three-way head swivels/locks in front/side positions. Blocks are easily disassembled with a single Allen® wrench.
Use for:
Double Carbo AirBlock® - 40mm
Sheave Diameter 1-9/16"
Low-friction Carbo AirBlocks® are lightweight, strong, reliable, and affordable.
Carbo AirBlocks® are 60% stronger and 30% lighter than Harken's Classic blocks. The Nylon-resin side plates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Sheaves spin on high-load ball bearings with fitted races for low-friction operation. Ball bearings, sheave and sideplates are UV-stabilized with carbon-black additive for maximum protection.
Use the 40mm Carbo for jib and mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats.
Like all AirBlocks®, the three-way head swivels/locks in front/side positions. Blocks are easily disassembled with a single Allen® wrench.
Use for:
- Main/jib sheets
- Mainsheet fine-tune
- Control lines
- Vangs
- Cunninghams
- Outhauls
| Mfg No. | Description | Length | Max Line Diameter |
Shackle Pin Diameter |
Max Working Load |
Breaking Load |
Weight w/ Shackle |
| 2638 | Double / swivel |
3-11/16" (94mm) |
3/8" (10mm) |
3/16" (5mm) |
970 Lbs (440kg) |
2,380 Lbs (1,080kg) |
3.2 oz. (86g) |
Harken 2638 40mm Double Swivel Carbo Airblock
Sale price$82.95
Regular price$94.55
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Harken 2638 40mm Double Swivel Carbo Airblock
Sale price$82.95
Regular price$94.55