Warne Rings Torque Setting

[Keith Edmunds]

I've just got a Wera torque screwdriver and I have to say that the 2.8 Nm recommended setting is quite a bit tighter that the method I normally used of using the short shaft of a 'L' torx key.

I've currently dome up to 2.3Nm which is a tad tighter than I previously had them by tightening with the key. Is it okay to go up to 2.8Nm is is it better to err on the side of caution? My scopes are S&B Klassiks

 

[8x57]

While I personally don't like Warne because of their design, they have a good reputation and I can't see them recommending settings that would be harmful to a quality scope like the S&B.

 

[bobthenailer]

28 inch pounds is what the Warne T handle ring tool is preset to.
Kind regards,
Bob.

 

[Miki]

Torque settings for bolts is a complex monster and incorporates a lot of math.
Apart from the shear strength of the bolthead and the allowable load applied to the spiral threads (both internal and external) the tensile strength of the material comes into play too.
The torque setting is the lowest calculated alowable tensile load.

If the 'ring' is designed to contain a 30mm diameter tube (for example) then the internal diameter will need to be slightly less than 30mm.
The design engineer will have taken the tensile failure of the bolt body, the shear failure of the bolt and internal threads into consideration to define the reccommended torque setting.

The weakest link is the rings internal threads, or put another way I doubt very much that you would damage the scopes body.
Over tightening the bolt will stretch the threads, as the bolt is steel and the rings are alluminium these threads are likely the weak point.

28 inch pounds is what the Warne T handle ring tool is preset to.
Kind regards,
Bob.

28in/lb is 3.16NM, 2.8NM is 24.8in/lb

If the maufactures tool is set at just over 3NM then just under 3NM is fine.

 

[Corvid]

A couple of videos on YouTube, I'm using the maxima 30mm rings they specify 25 inch/ lbs on the videos

 

[Uncle Buck]

A couple of videos on YouTube, I'm using the maxima 30mm rings they specify 25 inch/ lbs on the videos

Spot on just remember to tighten bottom screws
first then top ones ..

 

[finnbear270]

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