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Big Boat Sheaves

64 mm Wide Sheave

Part No. 640
$162.50  In Stock
Sheave Ø (mm)64 mm
Sheave Ø (in)2 1/2 in
Maximum line Ø (mm)14 mm
Maximum line Ø (in) 9/16 in
Maximum working load (kg)907 kg
Maximum working load (lb)2000 lb

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Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of hardcoat-anodized, PTFE-impregnated 6061-T6 aluminum, sheaves feature Torlon® rollers to carry high radial loads and carbon-black Delrin® balls to support sideloads and provide UV protection.

Delrin® is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates.
Torlon® is a registered trademark of Solvay Advanced Polymers.

Sheave Ø (mm)64 mm
Sheave Ø (in)2 1/2 in
Width (mm)32 mm
Width (in)1 1/4 in
Weight (g)170 g
Weight (oz)6 oz
Center pin Ø (mm)8.1 mm
Center pin Ø (in) 5/16 in
Fasteners (mm)8 mm
Fasteners (in)5/16 in
Maximum line Ø (mm)14 mm
Maximum line Ø (in) 9/16 in
Maximum working load (kg)907 kg
Maximum working load (lb)2000 lb
Breaking load (kg)1814 kg
Breaking load (lb)4000 lb
DWG: 640.dwg (open/save)
DXF: 640.dxf (open/save)
EPS: 640.eps (open/save)
High-res JPG: 640.jpg (open/save)

DO NOT use Harken Equipment for Human suspension.

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