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57 mm Black Magic

57 mm Aluminum Block — German Admirals Mainsheet System

Part No. HC7798
  Not available on-line please contact Harken UK
Sheave Ø (mm)57 mm
Maximum line Ø (mm)12 mm
Maximum working load (kg)2200 kg

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)57 mm
Weight (g)265 g
Shackle pin Ø (mm)8 mm
Maximum line Ø (mm)12 mm
Maximum working load (kg)2200 kg
Drawing - DWG:  HC7798.DWG (open/save)
Drawing - DXF:  HC7798.DXF (open/save)
3D drawing - IGS:  HC7798.IGS (open/save)

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

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