Novodiac Shock Absorber By Incabloc

Novodiac (Anti-Shock)

Novodiac Shock Absorber By Incabloc

Novodiac is a shock absorber made by Incabloc. It is a Swiss made, removable anti-shock system found in a wide range of watches.

Novodiac Incabloc Drawing

Incabloc currently dedicates most of their site to their lyre-spring style shock absorber, with almost no information about the Novodiac style.

In Incabloc’s own words:

“Novodiac is a geometrical alternative for a functional and economical spring system. Free, detachable spring. Bayonet-type attachment; no untimely unhooking. Novodiac is competitively price to meet your customers’ needs.”

Incabloc refers to Novodiac as a shock absorber for economical calibres. If a caliber comes in various grades (such as Sellita grades or ETA grades), Novodiac is typically found in the lower grades.

Novodiac Incabloc Jewel Setting

A complete Novodiac anti-shock system consists of several parts that are available in 3 sizes:

  • 3 Prong spring
  • Cap jewel /end stones
  • Jewel
  • Shock-absorbing lower block
  • Shock-absorbing upper block

Novodiac VS Etachoc:

You may have seen mentions of an an anti-shock device produced by ETA called Etachoc. Etachoc is basically the ETA (SWATCH Group) in-house produced version of the Incabloc Novodiac shock absorber. Novodiac springs can come in ETA packaging with a part number 289852. You can still find some of these on eBay and from some parts sellers.

Replacement Price:

Novodiac costs about half the price of Incabloc’s popular Double-Cone system. At the time of this post, a price for the complete upper setting with jewels and spring was found online for $8.00 USD. For just the shock spring, the price is around $2.50 USD.

Different Sizes of Novodiac:

Novodiac comes in different size options depending on the caliber it is being used in. The measurements are from the widest points. If you know the correct size of a specific caliber that you have worked on, please add it in the comments below.

  • 231 – 1.7mm (some list as 1.65mm)
  • 232 – 1.5mm (some list as 1.45mm)
  • 240 – 1.25mm

How to remove Novodiac?

The three prong Novodiac spring is held in place at three points. Using a tool or other device, one must rotate the three prongs (sliding under the restraining tabs) until the three prongs reach the three openings in the setting. Be careful that it doesn’t fly away!

@ravi.mandya01 Commented this on our Instagram post: “We used peg wood with hole in the center to open this shock spring.”

While pegwood or tweezers may certainly be options for removing Novodiac, another is a tool specifically made for this purpose. The Bergeon 31081 is one such tool. Learn more about this tool here.

Novodiac Tool Bergeon 31081 Nov26 Nov28

Additional Resources:

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HKPT Caliber PT5000 Watch Movement • Caliber Corner
3 years ago

[…] Novodiac […]

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3 Лучших Механических Часов с Кожаным Ремешком (2022) — Wrist Watch Everywhere
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[…] В часах был использован автоматический часовой механизм PT5000. Частота колебаний баланса составляет 28800 в час, запас хода 38 часов и 25 искусственных камней на борту (источник). […]

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