Product Description

Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of Hardkote-anodized, Teflon® 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. Select sheaves based on load-carrying capability.

Installation requires clamping or securing inner race.

Use for:
Mainsheets, Spinnaker sheets, Afterguy/foreguy and Footblocks.

Part Number: 518

Imperial Metric
Sheave Dia. 4 1/2" 114 mm
Width 1" 25 mm
Weight 16 oz 454 gr
Center Pin Dia. 3/4" 19.10 mm
Fasteners 3/8" 10 mm
Fastener Circle 1 3/8" 35 mm
Max Line Dia. 3/4" 18 mm
Maximum Working Load 7500 lbs 3401 kg
Breaking Load 15000 lbs 6803 kg

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Harken 4.5 in. Sheave
Original Price: $ 471.35
Price: $ 414.79

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