Etachoc and Incabloc shock system

[gran]

So what the difference between Etachoc and Incabloc shock system?

Incabloc

Etachoc

some old add

For comparison,a typical unfinished SWISS ETA movement

A more highly-finished movement used in Thomas Gref watches with Incabloc!!

The ETA 2824-2

It is important to realize that there are about 4 different grades of the ETA 2824-2 movement available. The differences include the finish (rhodium or nickel, rhodium is more expensive and more durable), the decoration (many different varieties), and the quality of the components. T, and include many component upgrades such as high-grade balance wheels (Glucydur), balance springs, mainsprings, escapements, and balance jewels.

[gran]

http://3.bp.blogspot...loc+and+KIF.bmp

Then there is also the KIF system....

Comparison between KIF and Incabloc

The primary difference is the shape of the spring which holds the cap rubies (s) down. Both let you remove the cap jewel without totally removing the spring - it kind'a hinges up and out of the way without having to take it completely off.

Most of the higher end brands use Kif: AP, PP, Rolex, VC, JLC, Chopard, etc.

From the design Incabloc has just two contacts in the jewel bearing whereas Kif has three balance at each 120 degrees along the whole circumference for the jewel. Under strong shock impact, the Kif may survive better in maintaining the Ruby jewel bearing in a balanced position. As Kif using three-point contacts that it will have a self-aligned effect on the position of the bearing. Two point Incabloc may have a possibility to shift the bearing a bit to one side in case the spring is not in a co planarity or flat. So I think three points are best… two points is insufficient, and 4 points is not working, some what Like the Hi Fi System that only we put three Nails under each amplifier, we seldom put four.

[gran]

And ther is Paraflex too.....

[ogladio]

Thanks for posting Gran! Shock protection seems to be on everyones mind nowadays, although look is perhaps more discussed than function