Description
Harken 40 mm Zircon Double Block
Zircon blocks help trimmers match sail shapes to new conditions immediately. At the core of the Zircon performance are industrial ceramic ball bearings mounted inside caged races. The cages keep these bearings separated so they don’t bunch, touch, and stop each other. The result is the most efficient small boat block Harken has ever made. Zircon blocks are available in 40- and 57-mm sheaves in single and double blocks, with or without beckets.
Technical Description
| Sheave Ø (mm) | 40 mm |
| Sheave Ø (in) | 1 9/16 in |
| Length (mm) | 60 mm |
| Length (in) | 2 3/8 in |
| Weight (g) | 44.7 g |
| Weight (oz) | 1.58 oz |
| Maximum line Ø (mm) | 8 mm |
| Maximum line Ø (in) | 5/16 in |
| Maximum working load (kg) | 230 kg |
| Maximum working load (lb) | 500 lb |
| Breaking load (kg) | 680 kg |
| Breaking load (lb) | 1500 lb |
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