Railmaster TPD & Winder Settings | Swiss Watch Store
The Omega Railmaster is an automatic watch: it winds itself from the motion of your wrist, but on the days it sits unworn a watch winder keeps the mainspring topped up. This model carries reference 220.10.40.20.01.001. It is powered by the Calibre 8806 movement. Below you'll find the exact TPD setting and winding direction the Railmaster needs.
TPD and Winding Direction
The correct setting for the Railmaster is 650 turns per day, bidirectional: 650 turns per day with the rotor turning in both directions.
| Turns per day (TPD) | 650 |
| Rotation direction | Bidirectional |
| Movement | Calibre 8806 |
Why the Correct Setting Matters
Too few turns and the Railmaster stops between wears; the right figure keeps the mainspring in its sweet spot, where the movement runs most consistently. And there is no risk in experimenting: a modern automatic cannot be overwound on a winder, because the mainspring's slipping bridle releases excess tension. Getting the setting right is about convenience and accuracy, never about avoiding damage.
Choosing a Watch Winder for the Railmaster
For the Railmaster, look for a programmable winder offering a 650 TPD bidirectional programme. One watch? A single winder. Two or more automatics? A double or triple winder keeps the whole rotation ready. You'll find suitable models in our watch winder collection — check the programme list before you buy.
Railmaster Winder FAQs
What's the correct TPD setting for the Railmaster?
The Railmaster is specified at 650 turns per day. Most programmable winders offer this as a standard preset.
Which winding direction should I use?
Bidirectional — the winder should rotate in both clockwise and anticlockwise directions.
Can I use any watch winder for my Railmaster?
Yes — provided it's programmable. Verify the winder offers 650 turns per day with bidirectional rotation before buying; fixed-setting winders may not match.