DESCRIPTION

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 tocarry 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 L.L.C.

Our Part # HAR500 | Mfr. Part # 500

FEATURES

  • Large 3.0 inch (76 mm) sheave diameter.
  • Designed for big boat applications.
  • Low-friction bearing system.
  • Durable, high-strength material construction.
  • Ensures smooth line movement.

TECHNICAL INFORMATION

DescriptionImperialMetric
Sheave3 in76 mm
Width7/8 in22 mm
Weight6 oz170 g
Center Pin3/8 in10 mm
Fasteners3/8 in10 mm
Maximum Line9/16 in14 mm
Maximum working load4950 lb2245 kg
Breaking Load9900 lb4490 kg

KNOWLEDGE BASE

Harken Marine CatalogWhere to find each Harken range in the 2026 Marine Catalog (and what the 2027 and 2023 new-product supplements add).View Selection Guide →