Question Anyone have experience with Ergotron wall mount monitor arm or similar? Uncomfortable with it being on one stud.

[Coyle]

I just set this up and am uncomfortable with it all on one stud; arm is heavier than I anticipated (13.5lbs) and though monitor is at low end of weight limit (12.5lbs) considering extends outwards up to 33" seems like a lot of force on single stud; wondering what other's experiences have been; thinking of putting board up spanning 3 studs then drilling thru center of board and screwing longer lag bolts into existing mount holes in stud; putting some into the other 2 studs as well, just to give that single stud some help; Have it mounted now--without monitor for the moment--and it feels solid; but this is my first experience with a long monitor arm like this. This is it: https://www.ergodirect.com/17794-ergotron-45-383-026-lx-hd-sit-stand-wall-mount-monitor-arm.html
In the pic the horizontal holes are from my using an awl to find edges of stud, have electric finder this just takes the guesswork out of finding center, I will sand and paint over it; also I originally mounted it a bit lower so that's the bottom hole; it cracked the textured surface that's over the sheetrock, made me a bit nervous that I might've split the stud as well; M8 80mm lag bolts are pretty large for 2" stud (1.5" actual) Anyone have experience with using one of these or similar mounts and would you suggest beefing up the support or is it good in the one stud?

 

[Hans Gruber]

https://www.amazon.com/USX-MOUNT-XMM006-Articulating-400x400mm-Weight/dp/B07CXQRMLQ/ref=sr_1_21?dchild=1&keywords=tv+wall+mount&qid=1612725324&sr=8-21

This one is a beast. The one you have pictured does not appear to be up for any monitor beyond 5lbs.

 

[Coyle]

https://www.amazon.com/USX-MOUNT-XMM006-Articulating-400x400mm-Weight/dp/B07CXQRMLQ/ref=sr_1_21?dchild=1&keywords=tv+wall+mount&qid=1612725324&sr=8-21

This one is a beast. The one you have pictured does not appear to be up for any monitor beyond 5lbs.

Must just be my pic; it is quite a substantial mount, here's video shows it better:

I have used one like you mention for a friend's tv, it works well for general use' but this is kinda specialty having more range of motion, longer extension etc.

 

[dr1337]

I just set this up and am uncomfortable with it all on one stud; arm is heavier than I anticipated (13.5lbs) and though monitor is at low end of weight limit (12.5lbs) considering extends outwards up to 33" seems like a lot of force on single stud; wondering what other's experiences have been; thinking of putting board up spanning 3 studs then drilling thru center of board and screwing longer lag bolts into existing mount holes in stud; putting some into the other 2 studs as well, just to give that single stud some help; Have it mounted now--without monitor for the moment--and it feels solid; but this is my first experience with a long monitor arm like this. This is it: https://www.ergodirect.com/17794-ergotron-45-383-026-lx-hd-sit-stand-wall-mount-monitor-arm.html
In the pic the horizontal holes are from my using an awl to find edges of stud, have electric finder this just takes the guesswork out of finding center, I will sand and paint over it; also I originally mounted it a bit lower so that's the bottom hole; it cracked the textured surface that's over the sheetrock, made me a bit nervous that I might've split the stud as well; M8 80mm lag bolts are pretty large for 2" stud (1.5" actual) Anyone have experience with using one of these or similar mounts and would you suggest beefing up the support or is it good in the one stud?

It should be okay as long as the two lags are properly installed (fresh holes, on center/not canting off to the side/not busting out the side of the stud). Im sure its not rated for you to push down on the arm fully extended or anything like that, but within their 30lb range should be perfectly fine even fully extended for daily use.

Also cracking the exterior finish is quite common, especially if you drove the lags in all the way with a drill/impact its very easy to actually pull the stud into the sheetrock and crack any paint, texture, or even the sheetrock itself. Usually its best to finish lags by hand with a socket wrench and turning slowly while listening to the wall/watching it to make sure you're not cranking it down too far. Also as long as you had a pilot hole of some kind it should really be impossible for a stud to split unless you get really really unlucky. If that did happen though I'd expect the lags to feel funny, shouldn't be related to the finish cracking whatsoever.

 

[Coyle]

It should be okay as long as the two lags are properly installed (fresh holes, on center/not canting off to the side/not busting out the side of the stud). Im sure its not rated for you to push down on the arm fully extended or anything like that, but within their 30lb range should be perfectly fine even fully extended for daily use.

Also cracking the exterior finish is quite common, especially if you drove the lags in all the way with a drill/impact its very easy to actually pull the stud into the sheetrock and crack any paint, texture, or even the sheetrock itself. Usually its best to finish lags by hand with a socket wrench and turning slowly while listening to the wall/watching it to make sure you're not cranking it down too far. Also as long as you had a pilot hole of some kind it should really be impossible for a stud to split unless you get really really unlucky. If that did happen though I'd expect the lags to feel funny, shouldn't be related to the finish cracking whatsoever.

I drilled 5mm pilot holes w' impact drill, though forgot to check and used masonry bit, was new set; that and the sheetrock cracking is what made me worry. But the holes are straight, I used ratchet to manually screw in the lag bolts. Feels secure, will put monitor on it and go from there, but now that I know the sheetrock cracking is normal not as worried.

 

[OlyAR15]

I drilled 5mm pilot holes w' impact drill, though forgot to check and used masonry bit, was new set; that and the sheetrock cracking is what made me worry. But the holes are straight, I used ratchet to manually screw in the lag bolts. Feels secure, will put monitor on it and go from there, but now that I know the sheetrock cracking is normal not as worried.

Why did you use a masonry bit to drill into wood? Or use an impact drill?

Also, a stud can support quite a bit weight. A single monitor is nothing.

 

[Coyle]

Why did you use a masonry bit to drill into wood? Or use an impact drill?

Also, a stud can support quite a bit weight. A single monitor is nothing.

Like I said, was new set and I forgot to check; was one of those cheap dual use impact drills bits included; regular ones and masonry bits, the masonry were silver while the regular ones were black, guess in that moment my brain connected black with masonry; I rushed that partbut it seems to be holding ok.

 

[geofelt]

I think you are good.
I use a ergotron MX mount which is similar as to mount and capability:

Wall Mount Monitor Arm Ergotron 45-228-026 MX

Ergotron 45-228-026 is a wall mounting arm for displays up to 30 lbs, offering 5" of height adjustment with 17" of extension/retraction, integrated tilt and portrait-to-landscape rotation.

www.ergodirect.com

The monitor is a philips 40" BDM4065UC it weighs 18. 7 lbs.
I might be worried if you have to extend it to the max from the wall.
But for normal usage it is just right.