Orient G11

Orient G11 | 17jewels.info - The Movement Archive

Orient G11


The Orient G11 shown here is an elaborate handwinding movement, which probably bases on a Seiko movement.

The speciality of this movement is, that escapement wheel, fourth wheel and third wheel are all beared in ruby bearings with cap jewels. These Diafix bearings are made by Seiko.

An additional speciality is, that the balance wheel is beared under a balance brigde and not, as common, under a balance cock.

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The construction of this movement is conventional: The minute wheel is beared on both ends under an own bridge, the rest, escapement wheel, center second wheel (directly driven) and third wheel are all below one large bridge, as well, as the mainspring barrel.

Orient G11: base plate

base plate

The large ring balance with its two slanted legs (probably Glucydir?) runs in two Seiko-Diashock shock protecting bearings under the balance bridge. It oscillates with slow 18000 A/h.

The hairspring is connected to a moveable hairspring stud and can be regulated in its effective length on the hairspring key only.

Orient G11: dial side without date indication

dial side without date indication

On the dial side, you see the yoke winding system, the Diafix-bearings and the spares for the date indication mechanism.

Orient G11: date indication mechanism

date indication mechanism

The date indication mechanism is not repair-friendly with lots of small springs (with superb flying capabilites) - the only real weak point of this otherweise very well made movement.

Orient G11: Orient G11 dial side

Orient G11 dial side

As you can see here, this movement was abused a lot - even the dial was glued onto it!

As the overall condition of this movement is very poor, it’s not tested on the timegrapher, since the results wouldn’t be representative at all.

Technical data

Size:11 1/2''' (measured: 25,2mm)
Number of jewels:21
Escapement:Pallet lever
Balance types: Glucydur anular balance
Shock protection(s): Diashock (Seiko)
Balance bearing / direction hairspring:Bridge
Moveable stud:yes
Adjust mechanism:Hairspring key
  • lever
  • escape wheel, seconds wheel, third wheel, mainspring barrel
  • center minute wheel
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:3 hole(s)
  • SCD (direct center seconds)
  • QG (date indication (aperture))
  • RDR (date corrector)

Usage gallery

Orient G11: Orient Multi Year Calendar gents watch

Orient Multi Year Calendar gents watch

Other movements from Orient