Raketa 2628.H

Raketa 2628.H | 17jewels.info - The Movement Archive

Raketa 2628.H


The caliber 2628.H of the russian Petrodworez watch factory is a handwind movement, which features a day-date indication.

The suffix .H indicates, that there was one update on the construction.

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With its shock protected four leg ring balance and the shock protected escapement wheel, this movement is suitable for rough situations.

Raketa 2628.H: detail: balance cock mounting

detail: balance cock mounting

Russian movements ofter contain non-standard solutions agains problems with the fitting precision of some parts. A balance cock, which gives the balance wheel too few space in height is often found on russian movements, not only at Raketa. The “solution” is a flat metal plate, which is inserted between the main plate and the balance cock. Simple but efficient.

Raketa 2628.H: gears and trains

gears and trains

The movement construction is standard: The minute wheel is located in the center under an own bridge and thus allowes the usage of a directly driven center second wheel.

For the escapement, a swiss-type pallet lever is used.

Raketa 2628.H: slanted view

slanted view

On the side view, you can see the concentric wheels for minute and second.

Raketa 2628.H: Grundplatine


On the Raketa 2628.H, all gears, including the minute wheel are ruby-beared. Only the mainspring barrel is beared in metal bushings, but technically, that’s irrelevant.

At “11:30”, “03:30” and “07:30”, three additional jewels can be spotted. They are used on the dial side for bearing the date ring.

Raketa 2628.H: dial view without date indication mechanism

dial view without date indication mechanism

The shape of the setting lever spring with its large round plate at the bottom is typical for Raketa movements.

At “2:00”, there’s a yoke for the date correcting mechanism. Each time you pull the crown beyond the first position, the date advances one day.

Raketa 2628.H: dial side view with open date mechanism

dial side view with open date mechanism

The date mechanism is quite extensively made. The setting wheel at “11” is responsible for the instant switch of date and day.

Raketa 2628.H: dial side view with missing weekday disc

dial side view with missing weekday disc

The star wheel at 12 o’clock advances the weekday disc one turn.

Raketa 2628.H: Raketa 2628.H dial side

Raketa 2628.H dial side

Although the weekday disk has got 14 positions, the weekday is shown only on one language (here: english).

Technical data

Caliber base:Raketa 2601.H
Size:11 1/2''' (measured: 25,6mm)
Number of jewels:19
Escapement:Pallet lever
Balance types: monometallic anular balance
Shock protection(s): Poljot
Balance bearing / direction hairspring:Clockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
  • lever
  • escape wheel, seconds wheel, third wheel
  • center minute wheel
  • mainspring barrel
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:4 hole(s)
  • SCD (direct center seconds)
  • JG (weekday indication (aperture))
  • QG (date indication (aperture))
  • RDR (date corrector)
Mentioning in literature (years): 1983

Usage gallery

Raketa 2628.H: Raketa gents watch with calendar

Raketa gents watch with calendar

Raketa 2628.H: Raketa gents watch  (dial only)

Raketa gents watch (dial only)


This movement in the Raketa calendar gents' watch is a kind donation from Hans-Georg. Thank you very much for your great support!