0item in your cart

100mm Aluminum Block — Swivel

100mm Aluminum Block — Swivel

Part No. 3246

Sheave Ø (mm) 100 mm

Sheave Ø (in) 3 15/16 in

Maximum line Ø (mm) 16 mm

Maximum line Ø (in) 5/8 in

Maximum working load (kg) 3402 kg

Maximum working load (lb) 7500 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)100 mm
Sheave Ø (in)3 15/16 in
Length (mm)203 mm
Length (in)8 in
Weight (g)623 g
Weight (oz)21.98 oz
Shackle pin Ø (mm)10 mm
Shackle pin Ø (in)3/8 in
Maximum line Ø (mm)16 mm
Maximum line Ø (in)5/8 in
Maximum working load (kg)3402 kg
Maximum working load (lb)7500 lb
Breaking load (kg)6804 kg
Breaking load (lb)15000 lb
Composer Export275498361BOM IDDescriptionQty12123 SHKL. 10MM D HR12AL-3753 ALPHA CHEEK13AL-3754 BETA CHEEK14H-34391A SHEAVE ASSM.15HBB87 ROLLER CAGE ASSM.16HFS1271 FST. 6 X 1 X 16MM SHCS37HFS1272 FST. 6 X 1 X 10MM SHSS18MP-3035 HD. POST COLLAR29SP-072 HEAD POST1tooltip
ID BOM Qty Price
2123 1 more info $119.60
Add to cart

10mm "D" Shackle — High Resistance

Forged stainless steel shackles are polished to a high luster and are stamped with the screw pin diameter. High-Resistance (HR) shackles are forged in 17-4PH stainless steel to handle high loads. They have an "HR" imprint for easy identification.

SP-072 1 more info $56.00
Add to cart

Headpost - 75/100mm Black Magic Block

Black Magic blocks have 17-4 PH stainless headposts.

MP-3035 2 more info $1.55
Add to cart

Headpost Collar Half - 75/100mm Black Magic Block

Headpost collar isolates dissimilar metals to prevent corrosion. Collar accepts set screw that fixes shackle in one direction or allows it to swivel.

HBB87ASSY 1 more info

Roller Cage Assembly - 100 mm Black Magic Block

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

HFS1271 3 more info $0.50
Add to cart

Fastener - M6 x 1 x 16 mm Socket Head Cap Screw, Black

Fasten with M6 hex wrench.

AL-3753 1 more info

Sideplate with Helicoils - 100 mm Black Magic Block

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

AL-3754 1 more info $136.00
Add to cart

Sideplate with Isolators - 100 mm Black Magic Block

Sideplates are Hard Lube-anodized for maximum UV protection and a smooth surface. Dissimilar metals are isolated to prevent corrosion.

HFS1272 1 more info

Fastener - M6 1 x 10mm Socket Head Shoulder Screw Cup, Black

Set screw allows shackle to be fixed or to swivel.

H-34391A 1 more info $76.00
Add to cart

Sheave Assembly - 100 mm Black Magic Block

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