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150 mm Aluminum Block — Swivel 150 mm Aluminum Block — Swivel
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150 mm Black Magic

150 mm Aluminum Block — Swivel

Part No. 3021
$1,384.35$400.90  Limited Quantities In Stock
Sheave Ø (mm)150 mm
Sheave Ø (in)5 15/16 in
Maximum line Ø (mm)25 mm
Maximum line Ø (in)1 in
Maximum working load (kg)6802 kg
Maximum working load (lb)15000 lb

Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting.

Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.

Sheave Ø (mm)150 mm
Sheave Ø (in)5 15/16 in
Length (mm)305 mm
Length (in)12 in
Weight (g)1730 g
Weight (oz)61 oz
Shackle pin Ø (mm)16 mm
Shackle pin Ø (in)5/8 in
Maximum line Ø (mm)25 mm
Maximum line Ø (in)1 in
Maximum working load (kg)6802 kg
Maximum working load (lb)15000 lb
Breaking load (kg)13605 kg
Breaking load (lb)30000 lb
DWG: 3021.dwg (open/save)
DXF: 3021.dxf (open/save)
IGS: 3021.igs (open/save)
EPS: 3021.eps (open/save)
High-res JPG: 3021 (open/save)

DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.

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