chairpartsonline Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism w/ 6" x 10.2" Mounting Holes - S2979-HD Black

This tilt bracket is just what you need to repair your cracked original bracket from whatever brand of chair that you own. The mounting holes on almost all chairs are pretty much standardized, so this bracket will fit without issue. It does have slotted holes, so there is room for adjustment if your chair is an oddball. No instructions are included, just the bracket in a thick plastic bag, but if you are attempting this you probably have a good idea of what you need to do already. The bracket construction is definitely better than stock, with a metal gauge at least two times that of the OEM bracket. Installation-wise, once you get the old bracket off the lift cylinder, you're set. Just screw this new bracket to your chair bottom and set it on the cylinder post. The problem is getting the old bracket off the lift cylinder post, lol. These tilt brackets use a taper fit between the bracket socket and the lift cylinder post; when you set it on the lift cylinder post it wedges itself in place and becomes almost inseparable. In order to release the bracket from the lift cylinder post, you can do a couple of things: 1. Use a pipe wrench and a hammer - grip the cylinder post with a pipe wrench, then use a hammer to whack the bracket in an attempt to spin it and break the wedge fit. or 2. Use a rotary tool and a cut off wheel to slice a slot in the tilt bracket's socket and relieve the tension on the wedge fit. I chose option two, see the pictures. Don't worry if you nick the lift cylinder post a bit like I did, it isn't a sealing surface and will be inside the new bracket's socket when you re-assemble the chair. You also might want to take the opportunity to clean and re-grease the swivel bearing in the bottom of your lift cylinder, my chair was kind of rough and slow on its swivel due to grooves that had worn into the two washers that the bearing rides in between, as well as hardened grease. I pulled the cylinder apart - there is an inner, sealed cylinder and an outer cylinder that it slides into. The washers and bearing sit on the tip of the inner cylinder's post, down in the bottom of the outer cylinder. I wiped off all of the old, hardened grease and re-greased it with wheel bearing grease. I also flipped over both of the washers so that the bearing now rides on the smooth, unworn sides. The chair now spins smooth as butter, just like the day I bought it. Use plenty of grease when you do this, that way the bearing and washers don't fall off the inner cylinder post when you reinsert it into the outer cylinder. You can also turn the chair's star base with the outer cylinder still in it upside down to make this step easier.

Way better than the seat control that FAILED from new in less than 2 yrs. Ordered to replace the seat control and my T3 Rush and it did the job. Installed in 5 min and fixed the wobble of the seat. Everything on this one is more robust than than the factory one from corsair. Good for the price!

I got this nice leather office chair a year or so ago. I guess it was manufactured for the big and tall market, but I got it because it was marked down. It is so big and heavy within a few months the tilt mechanism began to fail and eventually, the huge chair just flopped back and forth and I though one day it would just snap off like a stick and send me to the floor. I found this, it is very thick and very heavy. I installed it and have been using it for about 2 months now. I can tell it will hold up, if feels solid, and there is no lost motion anywhere in the tilt mechanism. The metal is so thick I do not think it will bend and I weigh about 200 lb. The old mechanism was bent in every direction . I wanted to add that I had no difficulty taking the chair off the mechanism, it is only held by 4 heavy duty screws. But I had a lot of trouble getting the mechanism off the stick. I was thinking I had to knock it off with impact from a hammer but that did not work. I read somewhere on the internet that you are supposed to put a pipe wrench or a large vice grip on the vertical stick. You are supposed to use your wrench to rotate the metal stick while you hold the mechanism still. One this old joint slips a little, all the friction is released and the mechanism just slips off, no problem. You may want to spray the socket with some WD-40 an hour before you do this. But it is very easy to separate it from your old tilt mechanism this way. I thought about this initially, but I was so afraid I would damage the surface of the stick because I though it was the hydraulic surface of the piston. It's not, the piston is inside this big silver pipe you are working with. A small scratch does not matter as it is not the surface that slips inside pressurized cylinder.

This worked beautifully for me and my chair. Chassis on my office chair broke (again). This piece only seems to last for about 2 years no matter how expensive or "heavy duty" an office chair I purchase (my current chair is supposedly rated at 400lbs and I weigh just under 300lbs). Rest of the chair is still awesome. Until now I have always just purchased a whole new chair. Whole new chair is $240+ dollars when the only thing wrong is this part broke. Was not super confident everything would fit when I decided to try replacing this, but it did perfectly and im so happy with the end result. I unscrewed the old chassis from the bottom of my chair with an alan wrench driver, and used the same bolts to attach the new chassis to the bottom of the seat. but a part that broke off of the old chassis was stuck on the base piston. I had to use a dremel tool to cut a slit in that piece then a flat head screw driver to pry it apart so it could be removed, because the new piece would not fit around the piston while that broken off piece of the old chassis remained. but once I got that piece separated from the piston the rest of the assembly was super easy. I will buy this again instead of a whole new chair in a couple of years when i suspect it will inevitably break again. Whole replacement process took well less than an hour, that includes gathering and putting away tools and throwing old parts in the trash can outside. Things to note though. I had to reuse the bolts and washers that held the chairs original chassis in place. I needed an allan wrench driver set and cordless drill to take these bolts out and replace them. I also needed a dremel tool to cut through a broken piece of the old chassis from the piston, it was stuck on there so good that I could not remove it with channel locks or vice grips. had to cut through it and bend it with a flat head screwdriver.

Seat Mechanism (because Amazon seems to mix reviews) Brand: Chairpartsonline Description: Heavy Duty Replacement Office Chair Swivel Tilt Control Seat Mechanism Model: S2979-HD ASIN: B072YFNQSR Color: Black Office Chair Brand: Yamasoro Description: Executive Office Chairs Comfortable Ergonomic Desk Chair with Flip-up Armrests Model: 6003 ASIN: B09TB5ML5S Color: Pink (because I think it's relevant... it's not) The office chair I use, when purchased, claimed it supports up to 300 lbs. Recently, however, I've noticed that the chair leaned weirdly, creaked when sat on, and when I was re-inserting one of the screws that had fallen out of the seat mechanism appeared cracked. So, I opted to replace it. I selected this seat mechanism for both review and price reasons. Pros: - Screw length/width fits my existing Office chair. - Super easy installation (provided you can remove your old seat mechanism from your Cylinder...) - Definitely thicker design than the mechanism it replaced Cons: - Tilt lock does not allow the user to lock the chair in a tilted position (only locks when fully upright). I am really going to miss this feature and may replace the seat mechanism specifically for this reason alone. - Natural upright position may sit forward more than desired. It isn't significant, just noticeable enough from the previous configuration that it has me questioning this seat mechanism. However, I can't decide if this is because of this seat mechanism design, or if I did not tighten the screws appropriately (think lug nuts). Lastly, because I had difficulty removing the cylinder from the previous configuration, which wasn't defective (I got too excited with the hammer and broke the seal), please note that the following cylinder fits this seat mechanism: Cylinder Brand: The Office Oasis Model: OAS-2010

I purchased this for a computer chair I had recently bought. The original chair equipment stated it was able to handle up to 300 lbs, but upon building the chair, it felt very sloppy. The chair had a definite lean forward and the chair felt very unstable when I sat in it. I started looking for a replacement gas cylinder and seat mechanism for the chair. I came across this one and purchased it. This thing is a TANK. Its easily three times the thickness of the stock mechanism. It bolted up to the chair, though I did lose some functionality such as the built in footrest. The arm to raise and lower the gas cylinder is slightly different than the stock one, but still functions. To be honest since this is a universal item I'm not docking any points for that. This thing literally is a beast. I love it. When I sat down with the old mechanism you could feel the chair wobble and rock. After installing this it is ROCK SOLID. Its beautiful. The leaning takes some force which I'm totally fine with as the previous mechanism almost would let the chair rock over. This mechanism turns it into a solid chair that I can game or work in for a long time and not worry about anything. I think that if and when the chair does need to be replaced, I'll simply unbolt the chair and bolt a new chair on. This mechanism feels like it will outlive the chair. If you're looking for a real serious heavy duty replacement mechanism. THIS IS IT.

Update 4/2021: Over 3 years later and this product is still solid. There are squeaks and pops that occur when tilting back and forward though overall it is a solid hinge mechanism. -------------------- I just received and installed this into my cheapish staples chair I bought a few years ago. The original broke so that the chair wobbled and leaned to one side. The first thing I noticed was that this is much heavier physically weight wise, to the original. Comparing the original to this part everything is thicker, even the rod is thicker that goes into the mechanism to actuate the cylinder to go up and down. It seems that they pre-grease some of the parts because I saw grease applied to the hole the cylinder goes into. There is no noise to this at all out of the box. If it does occur later then you can get lubricant or thicker grease from some place like a menards, lowes, home depot etc... to work into the mechanism. I did not do any of that before installing. The tilt mechanism goes back almost to a full recline position which I was surprised because previous reviews said it did not go back very far. In comparison to the previous tilt this new mechanism goes back further so I have more of a rocking chair type office chair than I had before. When locking the position there is no movement. The previous device there was always some movement, not this one. The holes did line up exactly on my chair. They are NOT slanted type of hole where you have room to adjust, they are pretty much exact specs to the 6" by 10.2" dimensions. The bottom holes are slightly and I mean slightly elongated but if you did not measure before ordering this mechanism there really isn't much adjustment possible. It fits or it does not. I just installed this so don't know how well it will last but from what I have seen of it and how it performs out of the box it is much stronger than the original.

I bought this to replace a broken mechanism on a DPS 3D Insight Gaming Chair. The chair was rated at 275lbs. Even though I weigh only 175lbs, the chair would flex when I sat in it and the metal eventually cracked bent. Just looking at this replacement heavy duty mechanism, I can see the steel is more than 3 times as thick and the reinforcement goes all the way around. After installing the heavy-duty mechanism, the chair has no flex/movement at all from the base. It's a completely different feeling when sitting in the chair. I tried another replacement mechanism on my chair first, bit it didn't fit because the extra holes in the rear didn't line up and they were required for mounting the chair back to the chair seat. I took a chance on this heavy-duty mechanism because there were no measurements that specified where those holes were located in relation to the other holes. However, it did specify how far apart those 2 holes are and since they are oblong, they looked like they would line up. The gamble paid off and they line up perfectly. One con is that I had to deal with was caused by the thickness of the metal on the heavy-duty mechanism. I was concerned that all of the screws might not be long enough, but that wasn't a problem. The problem I had is that the chair back has a bracket that mounts to the chair seat via four holes in the bottom of the chair seat. Two of those four holes go through the chair mechanism and two do not. Since the metal of the heavy-duty mechanism is so thick, the bracket doesn't sit even close to flat like it did with the original thin bracket. I made some spacers using three 1/4" x 1 1/4" fender washers on each of the two holes that did not go through the mechanism. This made the mounting height for all 4 holes about the same.