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57mm Aluminum Loop Block

Part No. 3214

Sheave Ø (mm) 57 mm

Sheave Ø (in) 2 1/4 in

Maximum line Ø (mm) 12 mm

Maximum line Ø (in) 7/16 in

Maximum working load (kg) 1134 kg

Maximum working load (lb) 2500 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. The sheave center carries primary load, allowing a smaller, lighter weight block. The soft-attachment Loop block has a removable deadend post for attachment to a padeye. Lashings can also be used. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
Sheave Ø (mm)57 mm
Sheave Ø (in)2 1/4 in
Length (mm)76 mm
Length (in)3 in
Weight (g)92 g
Weight (oz)3.23 oz
Maximum line Ø (mm)12 mm
Maximum line Ø (in)7/16 in
Maximum working load (kg)1134 kg
Maximum working load (lb)2500 lb
Breaking load (kg)2268 kg
Breaking load (lb)5000 lb
3214AL-3700AL-3701AL-3238H-34389AHBB85HFS796HCP1438
ID BOM Qty Price
AL-3238 1 more info $8.75
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Dead-End Post - 57mm Black Magic Loop Block

Patented Loop blocks have a removable deadend post for attachment to a padeye.

HFS796 1 more info $0.30
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Fastener - M4 x .7 x 12mm Socket Head Cap Screw, Black

Fasten with M4 hex wrench.

HBB85 1 more info $28.00
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Roller Cage Assembly - 57mm Black Magic Block

Center cage keeps Torlon® roller bearings separated and parallel to reduce friction.

H-34389A 1 more info $26.21
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Sheave Assembly - 57mm Black Magic Block

Sheaves are Hard Lube-anodized for maximum UV protection and a smooth surface. Captive Delrin® ball bearings carry side loads.

AL-3700 1 more info

Sideplate with Helicoils - 57mm Black Magic Loop Block

Sideplates are Hard Lube-anodized for maximum UV protection and a smooth surface.

AL-3701 1 more info

Sideplate with Isolator - 57mm Black Magic Loop Block

Sideplates are Hard Lube-anodized for maximum UV protection and a smooth surface.

HCP1438 1 more info $4.25
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Line - 2 mm x 4 ft Maxibraid Plus, Grey with Black Tracer

Use as lashing line.