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 steel ball bearings that ride in a grooved race. Midrange sheaves come in either Delrin or aluminum for wire.

Two 160 sheaves make up the 161 dual sheave universal lead. Use this sheave to divert a line that must turn in either direction. The bores of the sheaves are 1 1/2" (38 mm) apart, center to center.

Wire sheaves ride on high-load composite bearings. They are Hardkote-anodized aluminum with Teflon impregnation.

Ball bearings in the 1 1/2" (38mm) and 2" (51mm) sheaves minimize friction. The 1" (25mm) wire sheave uses low-friction washers for this purpose.

Use ESP sheaves to handle high static loads from halyards and reef lines. Sheaves are carbon-black Delrin for UV protection, and htey durn on stainless steel spacers. Contained sideload ball bearings allow sheaves to spin freely when loads are released. Sheaves require a sideplate for the sideload balls to roll on.

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, these 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 capacity. Installation requires clamping or securing the inner race.

High-Load Sheaves are offered as replacement parts or for use in special applications. Their bearing system combines sideload-carrying balls with a Teflon composite bushing to carry radial loads. While not as free-rolling as the standard Harken ball/roller bearing system, this compact bearing system is extremely durable and perfect for carrying high loads in a restricted diameter. Installation requires clamping or securing inner race.

Ideal for use on masts, booms, deck organizers, and through-the-transom running backstays.

* Breaking Strength based on use of solid 304 stainless shaft.

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.

These sheaves combine sideload-carrying balls with a Teflon composite bushing for radial loads, and are made of 6061-T6 aluminum.

* Breaking Strength based on use of solid 304 stainless shafts.