FEF 6630

 
FEF 6630

FEF 6630

Description

Fleurer was known for their high quality movement, and their tiny caliber FEF 6630 from the 1970s makes no exception, although at first glance it looks no different than all the other millions selling tonneau shaped form movements for ladies’ watches, like a AS.

base plate

base plate

The first positive surprise is, that not only all important bearings contain rubies, but also the minute wheel bearing. The 17 jewels could be achieved that way without the need for cap jewels.

gear train

gear train

The gear train is the classical one with directly driven center minute wheel, third wheel, seconds wheel and a pretty large escape wheel.

The very fine teeth are noteable.

side view of the gear train

side view of the gear train

Of course, a swiss pallet lever escapement is used, and the balance wheel is made from Glucydur, has no screws and is beared in two Incabloc shock protections. It beats rather fast with 21600 A/h. A little downside is, that it can be regulated only directly at the hairspring key and not with an elaborated fine adjustment system.

mainspring barrel

mainspring barrel

The imprint “Spring.No.Out” is interesting, as it should indicate the watchmaker not to open and service it, but to buy a replacemenet part instead. This was pretty common for high quality movements at that time.

FEF 6630: Dial side

FEF 6630: Dial side

On the dial side with its stripe finish, you can see the winding system and the Incabloc shock protection. Almost all tiny tonneau shaped movements for ladies’ watches at that time offered the same view on the dial side.

Technical data

Manufacturer:FEF
Caliber:6630
Size:5 1/2 x 6 3/4''' (measured: 13,2 x 15,2mm)
Height:3,55mm
A/h:21600
Number of jewels:17
Escapement:Pallet lever
Balance types: Glucydur anular balance (three legs)
Shock protection(s): Incabloc
Balance bearing / direction hairspring:Counterclockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:2 hole(s)
References: Flume: K3 N1 -
Inventory number:20060

Usage gallery

Ebel ladies' watch  (case missing)

Ebel ladies' watch (case missing)

This movement is a kind donation from Philipp Porter. Thank you very much for your great support of the movement archive!