Harken Self-Contained Sheaves
 Self-contained sheaves are designed for sailors to use in custom applications. The Micro, Bullet and Big Bullet sheaves are Delrin® with Delrin® ball bearings. They are scored for rope. 16mm AirBlock® sheaves are Delrin® and feature stainless ball bearings that ride in a grooved race. Midrange sheaves come in either Delrin®, or aluminum for wire. Wire sheaves ride on high-load composite bearings. They are Hardkote-anodized aluminum with Teflon® impregnation.
Ball bearings in the 1 1/2 in. (38mm) and 2 in. (51mm) sheaves minimize friction. The 1 in. (25mm) wire sheave uses low-friction washers for this purpose. Two 160 sheaves make up the 161 dual sheave universal lead. Use this sheave to divert a line that must turn in either direction. Use ESP sheaves to handle high static loads from halyards and reef lines. Sheaves are carbon-black Delrin® for UV protection, and they turn on stainless steel spacers. Contained side load ball bearings allow sheaves to spin freely when loads are released.
Sheaves require a sideplate for the sideload balls to roll on.
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| Use for: |
- Custom applications |
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Harken Big Boat Sheaves
 Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of Hardkote-anodized, Teflon®-impregnated6061-T6 aluminum, sheaves feature Torlon® rollers to carry high radial loads and carbon-black Delrin® balls to support side loads and provide UV protection. Select sheaves based on load-carrying capability. Installation requires clamping or securing inner race.
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| Use for: |
- Mainsheets
- Spinnaker sheets |
- Afterguy/foreguy |
- Footblocks |
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| Use for : |
- Masts
- Booms |
- Deck organizers |
-Through-the-transom running backstays |
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Harken Narrow Halyard & Steering Sheaves
 Narrow high load sheaves in mastheads improve sail handling, speed sail changes, and allow the use of smaller, lighter halyard winches. Used in steering systems, these sheaves return "feel" to wheel-steered boats. Sheaves combine sideload-carrying balls with a Teflon composite bushing for radial loads. These durable sheaves are made of 6061-T6 aluminum and are well suited to masthead and steering installations. Installation requires clamping or securing inner race.
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We at Mauri Pro Sailing are fully committed to be your Harken sailing equipment specialist not only providing the sailing community with a comprehensive , easy to use web site but with all the appropriate technical information that you might need to select Harken sailboat hardware and sailing gear.
Pictures and text courtesy of Harken Sailboat Equipment |
