The Harken Zircon 40mm Block is engineered for optimal performance in small boat sailing. Its ceramic ball bearing sheave ensures low friction and high durability, allowing sailors to adjust the sail profile swiftly to changing conditions. The Zircon blocks utilize industrial ceramic ball bearings made of zirconia, integrated into cage paths that separate the bearings to prevent contact and blockage. Zirconia is over seven times more resistant to compression than stainless steel bearings and absorbs less energy before rotation, enhancing responsiveness, especially in light winds. This results in the most efficient blocks ever made by Harken, improving sail profile and increasing speed.
- Ceramic ball bearing sheave for optimal performance
- Industrial ceramic ball bearings made of zirconia
- Cage design to prevent bearing contact and blockage
- Over seven times more resistant to compression than stainless steel bearings
- Enhanced responsiveness in light winds
- Improved sail profile and increased speed
| Model | Sheave Diameter | Block Configuration | Length | Weight | Max Rope Diameter | Maximum Working Load | Breaking Load |
|---|
| 2190 | 40 mm | Single, Loop | 60 mm | 22.9 g | 8 mm | 115 kg | 340 kg |
| 2191 | 40 mm | Single, Loop with Becket | 73 mm | 26.5 g | 8 mm | 115 kg | 340 kg |
| 2192 | 40 mm | Double, Loop | 60 mm | 44.7 g | 8 mm | 230 kg | 680 kg |
| 2193 | 40 mm | Double, Loop with Becket | 73 mm | 47.6 g | 8 mm | 230 kg | 680 kg |
