Katu Office Chair Cylinder Replacement - Universal Size, Heavy Duty, 15.5 Inch, Color Black

I have an old chair that's well-worn but comfortable. Recently I needed to raise it but found myself unable to do so. I purchased this item to replace the old one. In retrospect, I should probably have bought a new chair. The old unit was very hard to remove. I had to engage the use of a press, a vice, an angle grinder, drill press, hammers and a 5mm tap. Eventually, I had the old item removed and this one slotted right into place with no issue. I'm sitting in the chair typing this now.One interesting thing is the old unit had apparently somehow collapsed inside giving me a very low sitting position which I had kinda got used to. Feels weird sitting higher. This unit also won't lift the chair on its own, you have to give it a little assistance but that's not a biggie if I can get a couple of more years out of this chair.In case anyone is researching, it seems like most of these units are standard dimensions so unless your chair is doing something weird, you should be able to find a good fit without much issue.

I really needed a fix for my Ewin Gaming chair. If I would even lift it 1 to 2 inches, It would drop in increments with loud noise till at the bottom. I purchased this product and when received I got the chair ready. Like another post I saw I took my iPad with and watched the YouTube video and Sprayed WD40 and Silicone grease on parts. After a few minutes I was lucky and got the old piston off with two Hits with a rubber mallet. Then getting the part close to the chair seat I used a pipe wrench and only did 1 twist up and down and it came off. Putting the new one on (using the gloves the whole time) It worked perfectly and now works well only 15 minutes for 100% of project finished.

LEAP CHAIR by STEELCASE. I had to modify the Katu cartridge to make it work. The modification took seconds. Steelcase seemingly has a slight variation perhaps designed to cause consumer to return to them for parts. When purchasing this part from Amazon I assumed there might be some design difference to prevent using a generic replacement cartridge. To begin I watched two YouTube vids showing replacmen of lift cartridges in generic chairs. I was pleasantly surprised my steelcase chair disassembled with hammer and pipe wrench as vids showed. The Katu cartridge was the exact demensions of the cartridge I was replacing. The only difference was the very top of the Katu cartridge, the orange nylon compression pin was slightly longer than the Steelcase. When I reassembled the chair I was unaware of that difference. Once weight was applied to the chair, the chair immediately sank to the lowest position. It indicated the lift lever was engaged. I quickly realized the orange nylon pin on top of the Katu was maybe 3/16 inch taller causing it to have constant pressure by the height adjustment lever. I eyed both old and new cartridge side by side and determined by slicing off the orange nylon pin about 3/16, say the thickness of 2 quarters, the part should work fine. The cut with a power tool took seconds. I used a thin blade grinding tool. The chair immediately worked fine.

I Looked all over for a chair to replace my 10 year old computer chair after the hydraulic piston started screaching when I turned and started to deflate when I sat down. I looked and found nothing as good as what I already had and they are expensive to boot. I decided to give this thing a try and after some trouble disassembling the old chair this thing popped right in. I weigh a good 250 lbs and this thing holds me up just fine. We'll see how it holds up over time but for 15 bucks it's hard to beat. Oh if you can't get the piston out of your chair a monkey wrench worked great for me.

Great solution to a common problem; the swivel piston that has seen better days. The cost is very reasonable and the time to replace this part is about 15 minutes. Yes it can be stuck because of years of "heavy end" work. The videos (especially the Katu product) show several different ways lubricate and loosen that piston. Investing $12 saved me over $120 for a new chair! Just be patient and try to overpower the piston end. Use a 1.5 inch PVC pipe (12 inches worked for me) to extend the torque with the plumber's pipe wrench. Both ends are a just friction fit that seats in with your rear end in the chair. This Covid-19 pandemic has given me more time to repair a lot of other things in my home that I was normally to lazy to bother fixing.

Let me start off by saying not only did I ask questions about this item and get no replies back, but I did my research before buying one of these cylinders because I needed a TALL cylinder to replace the old cylinder in my 2 year old Boss office chair. I measured my old cylinder and researched the part # and this is what Amazon came up with. WELL... because the CANISTER measurements are so off on this one.. see my photos...is this NO WHERE NEAR the height I needed because this one is 4 inches SHORTER than my old cylinder was. THIS canister is supposed to be 2" inches wide, however mine is actually 1 1/2" - 1 3/4" inches all the way up the canister, thus making my chair super low to the ground! And when I sit in it, it goes down IMMEDIATELY ANOTHER 1 1/2" INCHES, so heavy duty IT IS NOT! I now am sitting so far below my desk line, having to reach up to get to my keyboard & it is ridiculous! I cannot locate an original manufacturer's part ANYWHERE and I cannot keep buying $20 universal parts that simply are incorrect in sizing. I HATE this replacement! My leaking original cylinder was far better than this one is!

One day my strut just released on me oddly. So i just searched on here found a new strut and one day later was back in business! You can find instructions online fairly easy on how to replace but its basically hold chair upside down and use a METAL hammer to hit hard around the metal base and the chair top basically falls out. I used a rubber mallet that did NOT work. It must be metal on metal contact to really jar it loose. Once you have the chair portion off turn over the base with the strut still attached and again pound out the strut from bottom of base. Should just drop out after a few good whacks! Simply insert the news strut put it together and sit on it. Ta-da!