Author Topic: Tork size  (Read 734 times)

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Offline DocD

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Tork size
« on: December 08, 2017, 10:05:35 AM »
I did a search but didn't find it, would anyone know the size of the tork size of the action screws for the CZ 455, Thanks

Offline DocD

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Re: Tork size
« Reply #1 on: December 08, 2017, 04:36:55 PM »
I got it!!!!!!!!!!!

Offline zormpas

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Re: Tork size
« Reply #2 on: December 09, 2017, 05:20:16 AM »
Well?

Offline Catdaddy2

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Re: Tork size
« Reply #3 on: December 16, 2017, 10:12:18 AM »
T-30.  Remember not to over torque that will cause the wood to crush. Most like 20 to 22 in.  to pounds. All rifles differ on exact torque. Start low maybe 16 in. And then shoot and adjust as needed. Their is no one setting fits all.

Offline carrollms

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Re: Tork size
« Reply #4 on: January 13, 2018, 12:26:01 AM »
I just received my CZ 455 American purchased in Dec 2017. I am mystified by this paragraph on barrel changes, page 10 of the accompanying Instruction Manual.  Unloosen stock screws....the screws must be retightened to a torque of 3 Nm"     Now the calculator tell me that 3 Newton Meteres (Nm) is only 2.2 pounds. I wonder if this is a misprint.

Offline Catdaddy2

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Re: Tork size
« Reply #5 on: January 20, 2018, 05:58:13 PM »
I thought it was 5Nm.

Offline carrollms

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Re: Tork size
« Reply #6 on: January 21, 2018, 12:03:08 AM »
3 Nm. I am looking at the manual updated as of 10/16 that came with my rifle in December 2017.   Now for inch pounds that is 26.5

Now here is another issue. The online 455 manual that I came across says 6 nm for stock screws and 5 nm for barrel screws!  Here is the quote from online from 2014

2 Unscrew both stock screws, take off the trigger guard together with the trigger guard plate and then take off the stock. When you
assemble the rifle after you have changed the barrel the stock screws must be tightened at a torque of 6 Nm

5. Loosen both barrel screws and take off the barrel. When you assemble the barrel back again you have to tighten the screws at a
torque of 5 Nm. Always tighten the barrel screws only after you have tightened the magazine housing screws.
(5 Nm is the same in the 2016 version)

Also, the 2016 version gives a torque for the magazine housing screw of 0.8 Nm, the online version does not give any torque specification for the magazine screw.

I plan to alert the CZ-USA folks of the discrepency. If the 2016 book is correct then they should replace the pdf on the web.

http://cz-usa.com/hammer/wp-content/uploads/2014/04/Instruction-Manual-CZ-455.pdf

Offline Esquilax

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Re: Tork size
« Reply #7 on: January 27, 2018, 04:43:29 PM »
The official FAQ says 455 wood stock is 25 inch pounds or ~2.82 Nm.

Link, scroll to very bottom: http://cz-usa.com/support/faq/

 

anything