Unitas 6325
Description
One of the most commonly used 13 ligne windup movements, often called with the term “Wehrmachtswerk”, is the Unitas 6325, which was available in differently executed versions:
version without slanted bridges
What they all have in common, however, is the lateral indentation next to the balance cock screw, making this movement very easy to distinguish from the significantly rarer, but therefore more sought-after, AS 1130.
base plate
The technical execution of this movement is flawless; all important bearings, even that of the minute wheel, are fitted with synthetic rubies.
gear train
We have the classical windup gear train here: The large mainspring barrel drives the center minute wheel, followed by third wheel, seconds wheel at 6 o’clock and the escape wheel.
This proven and large-scale design means that this movement, even though it was only released well after World War II, is referred to as a “Wehrmacht movement,” a name originally intended for movements that were intended to be particularly robust and reliable during wartime in Germany.
side view of the gear train
The three-leg anular balance is beared in a pair of Incabloc shock absorbers. It beats semi-fast with 21600 A/h and can only be adjusted directly using the hairspring key.
Unitas 6325: Dial side
On the dial side, you can see the reliable made yoke winding system.
In the lab
Timegrapher result
Since the movement can be adjusted at the hairspring key only, it is difficult to achieve good timegrapher results. On the specimen shown here from the BWC Courage watch, it was quite successful though, and you can see the capabilities of the it, especially, if it would get a professional revision.| horizontal positions | |||
|---|---|---|---|
| dial up | -2 s/d | 253° | 0.2ms |
| dial down | +3 s/d | 263° | 0.1ms |
| vertical positions | |||
| crown right (12 up) | -5 s/d | 222° | 0.3ms |
| crown up (3 up) | -12 s/d | 223° | 0.4ms |
| crown left (6 up) | -4 s/d | 226° | 0.1ms |
| crown down (9 up) | -3 s/d | 216° | 0.0ms |
Technical data
| Manufacturer: | Unitas |
| Caliber: | 6325 |
| Caliber base: | Unitas 6320 |
| Size: | 13''' (measured: 29,0mm) |
| Height: | 3,95mm |
| A/h: | 21600 |
| lift angle: | 49° |
| Number of jewels: | 17 |
| Escapement: | Pallet lever |
| Balance types: |
Nickel anular balance |
| Shock protection(s): |
Incabloc none |
| Balance bearing / direction hairspring: | Clockwise |
| Moveable stud: | yes |
| Adjust mechanism: | Hairspring key |
| Construction: |
|
| Construction type: | solid construction |
| Winding mechanism: | yoke winding system |
| Setting lever spring: | 2 hole(s) |
| Attachment of setting lever: | plugged |
| Features: |
|
| References: |
Flume: K3 - |
| Documentation (years): | 1976 |
| Inventory number: | 24005 |
Usage gallery
Ankra 74 gents watch
BWC Courage gents watch