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125mm Aluminum Stand-up Block

Part No. 3261

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. Sideplates and sheaves Hard Lube-anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon® roller bearings separated and parallel to reduce friction. 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)230 mm
Length (in)9 1/16 in
Width (mm)127.5 mm
Width (in)5 1/32 in
Weight (g)1268 g
Weight (oz)44.72 oz
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)9979 kg
Breaking load (lb)22000 lb
A (mm)93 mm
A (in)3 21/32 in
B (mm)106 mm
B (in)4 3/16 in
C (mm)57 mm
C (in)2 1/4 in
IncludesIncludes padeye. Uses hole spacing and base dimensions of 648 padeye. Maximum working load decreases at varying angles.
FootnoteUses hole spacing and base dimensions of 648 padeye. Maximum working load decreases at varying angles.
Composer Export589174362BOM IDDescriptionQty1AL-3771 ALPHA CHEEK12AL-3772 BETA CHEEK13H-34392B SHEAVE ASSM.14HBB88 ROLLER CAGE ASSM.15HFS1272 FST. 6 X 1 X 10MMSHSS16HFS1275 FST. 8 X 1.25 X 16MM SHCS37MP-1865 STANDUP DEVICE18MP-3037 HD. POST COLLAR29MS-3018-11tooltip
ID BOM Qty Price
H-34392B 1 more info

Sheave Assembly - 125 mm Black Magic Block

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

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.

MP-3037 2 more info $1.55
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Headpost Collar Half - 100/125 mm 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.

MP-1865 1 more info $22.00
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Stand-up Base - 100/125 mm Block

Made of durable, flexible rubber, the stand-up boot holds block upright without snagging lines.

HBB88ASSY 1 more info

Roller Cage Assembly - 125 mm Black Magic Block

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

HFS1275 3 more info $1.85
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Fastener - M8 x 1.25 x 16 mm Socket Head Cap Screw, Black

Fasten with M8 hex wrench.

AL-3771 1 more info $180.00
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Sideplate with Helicoils - 125 mm Black Magic Block

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

AL-3772 1 more info $180.00
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Sideplate with Isolators - 125 mm Black Magic Block

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

MS-3018 1 more info $325.00
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Padeye Assembly with Head Post - 100/125 mm Block

17-4 PH stainless steel padeye base. Use 10 mm (3/8") fasteners.

Note

Nel kit è incluso il golfare 648. Il carico massimo di lavoro diminuisce ad angolature diverse.