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.or2. 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.

I was able to save a pricey wooden desk chair with this. It would have cost $475 to replace it with the same model. The hard part by far is getting the old support off the stem. I had to use a few well placed hacksaw cuts on the old support before I could hammer it off. But once I got the old one off this one installed very easily. I can't believe the difference between this sturdy support and the creaky old broken one

It was a simple replacement and fixed the lean I've been sitting on for a few years. Easy fix!

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.

Bought this out of of need for my DPS Gaming 3D Insight Office\Gaming chair because the factory base broke at the cheap welds causing the seat to be very wobbly which was a potential safety hazard. This base was a direct replacement and perfect fit and so far appears to be an upgrade, only took about 10mins to swap out the parts. The chair is much more stable and comfortable now. Very happy with with this product so far!!