40MM HARKEN ZIRCON BLOCKS
Zircon blocks are the most efficient small boat blocks Harken has ever made. At the core of Zircon performance are industrial ceramic ball bearings mounted inside caged races. Zircon bearings are more than 700% stronger in compression than stainless bearings of the same size so, they won’t deform if used within the recommended load limits. More importantly, they don’t absorb as much energy before starting to roll resulting in a very responsive, low friction, and free running block.
Our medium Zircon sheaves are the most versatile of the range. They offer great feel and can be used on a number of applications. Low friction and lightweight without sacrificing strength or durability.
Specifications
| Variant | Max Work L (kg) | Break Load (kg) | Weight (g) |
Part no. |
| 40mm Single | 115 kg | 340 kg | 22.9 g | 2190 |
| 40mm Single Becket | 115 kg | 340 kg | 26.5 g | 2191 |
| 40mm Double | 230 kg | 680 kg | 44.7 g | 2192 |
| 40mm Double Becket | 230 kg | 680 kg | 47.6 g | 2193 |
| 40mm Triple | 345 kg | 1020 kg | 66.5 g | 2194 |
40mm Zircon sheaves take a maximum line of 8mm
40mm Zircon triple and triple becket block available to purchase via pre order.