case back torque wrench?

[Fredrik]

A question for all the watchmakers on board this forum.

How do you close the case back on watches? As far as I know it should be fastened with a specific torque but I have never seen a case back opener/closing tool with built in torque wrench. Do you rig up a standard calibrated torque wrench or is there a specific tool for this?

As far as I know the torque for closing up a sport Rolex should be 5Nm?

[kilyung]

Given I don't dive deeper than 100ft, I just hand tighten my watches as do most watchmakers I know. Having said that I do have a torque wrench for another hobby that would work.

[Porter]

I never used a tool like that. For oyster cases I use a normal case opener with different diameter for each model and close by hand. Never had an issue.
Is easier to have problems with case tube seal than case back.

[SearChart]

Originally Posted by kilyung

Given I don't dive deeper than 100ft, I just hand tighten my watches as do most watchmakers I know. Having said that I do have a torque wrench for another hobby that would work.

This.

[Hpozzuoli]

Can anyone recommend a good versatile case opener. I only own Rolex , but my wife has some other brands. I am fairly new to the collecting side and I would like to be able to personally verify components. I suppose $300-$400 is my budget.

[JohnBaker3]

The Bergeon 5537 set covers most of Rolex's lineup. I found mine on eBay.

[Hpozzuoli]

Thanks John I will take a look. Do you just set the watch on a towel and push down with this particular type? I am a contractor with all these tools, but don't own a thing to work in my watches with.

[shofzr]

Originally Posted by Fredrik

A question for all the watchmakers on board this forum.



How do you close the case back on watches? As far as I know it should be fastened with a specific torque but I have never seen a case back opener/closing tool with built in torque wrench. Do you rig up a standard calibrated torque wrench or is there a specific tool for this?



As far as I know the torque for closing up a sport Rolex should be 5Nm?

The proper tool is the ROLEX 1019
The black knob on the top is set to click/slip when 5Nm is reached.



ImageUploadedByTapatalk1453953527.615225.jpg
(Pic "borrowed" from the web)




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[Fredrik]

Originally Posted by shofzr

The proper tool is the ROLEX 1019
The black knob on the top is set to click/slip when 5Nm is reached.

Thank you!

So there exists at least one such tool then. I actually assumed someone like Bergeon might produce something similar, but I have not found anything yet. Not even cheap chinese knock offs.

I assume it needs to be calibrated regularly like any proper torque wrench if you need to trust it?

Does anyone know if the Bergeon 5700z will act as a torque wrench when closing case backs?

[michigan.watches]

Originally Posted by Fredrik

Thank you!

So there exists at least one such tool then. I actually assumed someone like Bergeon might produce something similar, but I have not found anything yet. Not even cheap chinese knock offs.

I assume it needs to be calibrated regularly like any proper torque wrench if you need to trust it?

Does anyone know if the Bergeon 5700z will act as a torque wrench when closing case backs?

The Bergeon 5700 has no built-in feature for setting a particular torque or measuring torque.

[iclick]

Under the assumption the watchmakers have tightened the caseback properly, I just tighten to the same position it was originally. On the Tudors with etchings its easy, but Rolexes generally have none. I haven't removed the casebacks of any of my Rolexes, but if I did I would simply mark the caseback to a reference on the case and return it to that position after removal.

[Fredrik]

Originally Posted by michigan.watches

The Bergeon 5700 has no built-in feature for setting a particular torque or measuring torque.

OK, thank you.

From an engineering perspective I find it a bit odd. I am sure other manufacturers of sport watches will have a similar tool like the 1019?

[perpetual92]

Just make sure the gasket seating surface is clean and the gasket has a light film of silicone grease and hand tighten with a sticky ball. I usually will then use the LG press to just SNUG fit the case back. No need to over tighten. I would wager $$ that most RSC would not be checking for torque. A Deep Sea back home for service at headquarters, perhaps.

[mapalfa]

I've got one of these:
http://www.livesaysinc.com/newItems/...ex_Opener.html

Screws down onto the back like the genuine Rolex one, but doesn't have the torque function. I had one of the wrench type ones but it couldn't cope with an over-tightened back on my wife's Tudor. Given the risk of damaging the indents and the added cost of getting a watch maker to open it, I decided to take a chance and buy one of these.

It's fantastic and has opened everything I've thrown at it. You can also use it to apply force to a Jaxa opener for all those non-Rolex cases. No chance of the tool slipping as you screw it down tight, then the tool stays in position as you do the back up or undo it. Get the right one abd it will come with a mount that allows you to screw it to a work bench.