![Harken 40mm Zircon Blocks - Single Loop Harken 40mm Zircon Blocks - Single Loop](https://jimmygreen.com/24282-large_default/harken-57mm-zircon-blocks.jpg)
![](/img/stickers/17/NEW-Flash-BLUE-BKD.png)
More Information
Features
Downloads
NEW - 57mm Zircon Blocks from Harken
The most efficient small boat blocks Harken has ever made with industrial ceramic ball bearings mounted inside caged races.
More than 700% stronger in compression than stainless balls.
Ceramic is much harder and smoother than steel or composite.
Sheave and side plates are strong and reliable fibre-reinforced composite construction.
Structural head for soft attachment
Part No. | Block Type | Sheave Ø | Length | Weight | Optimal line Ø | Maximum Working Load | Breaking Load | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
2195 | 57 mm Single | 2 1/4 in | 57mm | 3 1/8 in | 79mm | 1.58 oz | 44.8g | 8mm | 330 lb | 150kg | 990 lb | 450 kg |
2191 | 40 mm Single w/becket | 2 1/4 in | 57mm | 3 3/4 in | 95mm | 1.81 oz | 51.4g | 8mm | 3330 lb | 150kg | 990 lb | 450 kg |
2192 | 40 mm Double | 2 1/4 in | 57mm | 3 1/8 in | 79mm | 3.05 oz | 86.4g | 8mm | 660 lb | 300kg | 1980 lb | 900 kg |
2193 | 40 mm Double w/becket | 2 1/4 in | 57mm | 3 3/4 in | 95mm | 3.27 oz | 92.7g | 8mm | 660 lb | 300kg | 1980 lb | 900 kg |
- Block Size - 57 mm