Harken 20STC Radial One-Speed Chrome Self-Tailing Sailboat Winch

The Harken 20STC is a Size 20 Radial one-speed, chrome self-tailing winch built for sailors who demand both elegance and reliable performance. The mirror-polished chrome drum pairs with a black composite base and top, delivering a refined look on any yacht's deck without sacrificing the proven pulling power of Harken's Radial gearing system.

The Radial drum gripping surface is precision-engineered for the Size 20 chrome drum specifically. Because chrome is more slippery than aluminum, the diagonal ribs are spaced closer together to maximize friction and holding power while still greatly reducing line wear compared to abrasive surfaces. When easing under load, the patented rib angle drives line wraps downward, preventing overrides and providing smooth, controlled release.

The self-tailing mechanism allows a single crew member to efficiently trim or raise sails hands-free, with spring-loaded composite jaws that adjust under line pressure to accept a range of line sizes. The fully covered winch top keeps fingers and clothing clear of moving parts.

Key Features:

• Mirror-polished chrome drum with size-specific diagonal rib pattern for maximum grip and reduced line wear
• Single-speed operation with a gear ratio of 2.76:1 and a power ratio of 19.20
• High-strength composite self-tailing jaws and skirt — lightweight and corrosion-resistant
• Composite roller bearings reduce friction under load and require no lubrication
• Load-carrying gears and pins are 17-4PH stainless steel for long-term strength and corrosion resistance
• Snap-fit roller bearing design keeps bearings captive in a Delrin® cage during drum removal for maintenance
• Snap-on/off base skirt enables easy one-person installation without removing the drum
• Sealed top lifts out as a single unit for quick, mistake-free seasonal maintenance
• Accepts line from 1/4 in. (6 mm) minimum to 1/2 in. (12 mm) maximum

Specifications:

• Drum Diameter: 2-7/8 in. (73 mm)
• Base Diameter: 5-3/8 in. (137 mm)
• Height: 5-13/16 in. (148 mm)
• Line Entry Height: 2-3/8 in. (61 mm)
• Fastener Circle: 4-3/8 in. (110 mm)
• Fasteners: 5 × 1/4 in.
• Gear Ratio: 2.76 | Power Ratio: 19.20
• Weight: 7.5 lbs.

The Harken 20STC is a top choice for small boat and yacht owners seeking a compact, low-maintenance, self-tailing winch that combines classic chrome aesthetics with Harken's industry-leading Radial winch engineering.