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Harken
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: 657


Specifications
Imperial Metric
Sheave Dia. 4 1/2" 114 mm
Width 1 5/8" 41 mm
Weight 25 oz 709 gr
Center Pin Dia. 3/4" 19.10 mm
Fasteners 3/8" 10 mm
Fastener Circle 1 3/8" 35 mm
Max Line Dia. 7/8" 18 mm
Maximum Working Load 14850 lbs 6736 kg
Breaking Load 29700 lbs 13472 kg

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Harken 4.5 in. Wide Sheave
HAR657
Original Price: $ 563.70
Price: $ 496.06
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