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125 mm Black Magic

125 mm Aluminum Block — Swivel

Part No. 3256
$782.70  Not available on-line. Please contact your Harken dealer.
Sheave Ø (mm)125 mm
Sheave Ø (in)4 15/16 in
Maximum line Ø (mm)19 mm
Maximum line Ø (in)3/4 in
Maximum working load (kg)4990 kg
Maximum working load (lb)11000 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)125 mm
Sheave Ø (in)4 15/16 in
Length (mm)254 mm
Length (in)10 in
Width (mm)127.5 mm
Width (in)5 in
Weight (g)1058 g
Weight (oz)37.31 oz
Shackle pin Ø (mm)12 mm
Shackle pin Ø (in)1/2 in
Maximum line Ø (mm)19 mm
Maximum line Ø (in)3/4 in
Maximum working load (kg)4990 kg
Maximum working load (lb)11000 lb
Breaking load (kg)9977 kg
Breaking load (lb)22000 lb
DWG: 3256.DWG (open/save)
DXF: 3256.DXF (open/save)
IGS: 3256.IGS (open/save)
EPS: 3256.eps (open/save)
High-res JPG: 3256.jpg (open/save)
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