Harken 40mm Zircon Double Block

Description

40mm Carbo T2 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.

Ceramic is a more familiar name for the metallic oxide Zirconia. 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. This becomes evident when you need to ease a sail in
very light air. These blocks respond! You feel even the slightest
fluctuations in sheet load. When used expertly, that means better
sail shape and more speed.

For the same bearing sizes, ceramic withstands incredible
compression loads, but beyond the limit, they tend to crush not
flatten. So, apply them thoughtfully in your rig.

They’re more efficient than other Harken small boat blocks, but more expensive too. Here’s how we see it: 1. This is competitive. If we don’t offer this level of performance, someone else might. 2. Sailors know best. If they try one and find value, they will buy more.