Jump to content

Seiko Barrel complete compatibility

Lacazema

By Lacazema
in Watch Repairs Help & Advice

 Share

Recommended Posts

Lacazema Member

Lacazema

Posted
Posted

Hello,

I'm looking for a barrel complete for a Seiko 7009A I've found the part number, I've found some available online but I've found a cheaper one for the 7S26A. Their parts number don't match but are awfully similar.

7009A : 201.024

7S26A : 0201.024

Would one be compatible in the other ? I've read that the 7s26 and 7009 are quite similar.

My barrel and arbor are fine but it's cheaper and easier to buy a balance complete then only the mainspring unless there are generic mainsprings available.

 

Thank you all for your help.

jdm Distinguished Member

jdm

Posted
Posted
33 minutes ago, Lacazema said:

Their parts number don't match but are awfully similar.
7009A : 201.024
7S26A : 0201.024

That is the same P/N, only written differently.

33 minutes ago, Lacazema said:

Would one be compatible in the other ? I've read that the 7s26 and 7009 are quite similar.

Only the 7S26A and B would be the same. 7S26C is different.

33 minutes ago, Lacazema said:

My barrel and arbor are fine but it's cheaper and easier to buy a balance complete then only the mainspring unless there are generic mainsprings available.

There care but are relatively expensive and may not perform as the original.

  • Like 1
Lacazema Member

Lacazema

Posted
  • Author
Posted

You beautiful beautiful man ! Thank you for the detailed response.

I've found 2 used for 5€ which beats the NOS for 20€ since this is a watch I'm "working on" for practice and learning.

I'll use one on the watch for reassembly and I'll use the other to train on hand-fitting the mainspring back in the barrel since that how I absolutely murdered my original mainspring....:startle:

Thanks again, much appreciated

  • Thanks 1
 Share
Go to topic listing

  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • BobG
      Etachron regulation system

      By BobG · Posted

      I wanted to post an update as I have two movements running really well now, 230-250 amplitude , 0.5 and under beat error, and +/-8 seconds or so. I removed the hairspring assembly in order to start over and noticed that the terminal curve between the stud and regulator arm was distorted. The stud was lower than it should be. I massaged the curve to look pretty good and reinstalled it. I followed Alex's video advice, best I could with 10x magnification, and with the regulator arm set in the middle of the curve I adjusted the stud so the spring was centered. I then made sure I could move the regulator arm the entire terminal curve without upsetting the coils. I then put it back on the Timegrapher and began closing down the regulator pins until I saw a change in amplitude which means to me that the pins were now pinching the spring. I opened them slightly and it looks good except I have a 0 on dial down, +3 on dial up but -16 on crown down.  I'm a bit stuck on how to adjust out the positional error. I also noticed a drop in amplitude, 180-200 on crown down. In the other video link I posted at about minute 26 if I remember he adjusts out positional error by manipulating  the regulator pin gap. With crown down the hairspring falls away from the pin and the rate slows so he closes the pins a bit to keep them tighter in crown down position. That means the spring is tighter on dial up as well but then he moved the regulator arm to slow the movement.  There must be some Seiko experts here that have some methods for dialing out positional errors. 
    • rjenkinsgb
      Short bead springbars

      By rjenkinsgb · Posted

      Like these? https://www.watch-tools.de/metal-straps/springbars/assortment-360-strong-spring-bars-beco-inox-o-1-8mm.php  
    • caseback
      Cap jewel with what looks like a circular engraving around the edge

      By caseback · Posted

      I've seen them on several swiss-made movements as well. Last one was a Tissot if I remember correctly.
    • caseback
      A lathe with indexing that won't break the bank?

      By caseback · Posted

      This thread might be interesting for you:  
    • VWatchie
      Cap jewel with what looks like a circular engraving around the edge

      By VWatchie · Posted

      I've never seen them, then again, I haven't got a ton of experience, but "common"? Really? In what context have you seen them? I'm not questioning you. I am sincerely curious why I've missed it. An alternative to Fixodrop is to apply less oil (no more than 50 % of the circle area). The only downside would be that it would shorten the service interval. More oil will prolong the service interval, but if the movement is subjected to trauma, there's a risk it will be displaced. Fixodrop makes it more stable. Unfortunately, Fixodrop is seriously expensive.
×
×
  • Create New...