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TWUN75NG24BK

Twin Wheel Caster Solutions
Mfg Part # TWUN75NG24BK
$3.53

*** Prices subject to change to volatile costing. ***

Features

Wheel Diameter
2.9528 in (75.00112 mm)
Wheel Tread Material
Nylon
Capacity - Dynamic
110 lbs (50 kg)

Full Product Specification

Name Value Metric Value
Country of Origin Taiwan
Stem Diameter 0.4375 in 11.1125 mm
Stem Length 1.375 in 34.925 mm
Wheel Tread Category Plastic / Nylon
Wheel Tread Material Nylon
Wheel Tread Color Black
Wheel Hub Color Black
Wheel Hub Type: Spoked, Solid Solid
Mounting Type Grip Ring Stem
Swivel Type Swivel
Capacity - Dynamic 110 lbs 50 kg
Wheel Diameter 2.9528 in 75.00112 mm
Rig Finish / Coating Black
Rig Material Nylon
Wheel (count) 2
Caster Swivel Radius 2.3425 in 59.4995 mm

Customer Reviews

"Works as intended" by Jamie
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Works great. Don't think twice about ordering. Replace your old worn-out casters with these and glide around your office and smile.
"Great price and quality!" by Travis
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Installed these on a Herman Miller Aeron chair - perfect fit and brought the chair up high enough to easily clear the carpet and chair mat. Highly recommend to anyone with an Aeron. I have the large/Size C Aeron and I weigh nearly 280 pounds and have no issues.

Hi Travis
Make sure the chair base is sitting directly on top of the caster swivel. The stem for the Aeron chair is typically shorter (7/16x7/8" grip ring stem part# TWUN75NG20BK) than the caster you purchased.
"Product works as advertised and very fast friendly customer service." by Justin Warner
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Product works 100% with Aeron chair.

Service was also fantastic. Not only were the people nice, they were also fast at resolving issues that arose. Thanks so much!
"Aeron Drags No More" by NB
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So glad a blog post from so many years ago brought me to this website for this specific model. The cost was great, shipping was fast, and the casters were easy to switch out. I no longer have the buyer’s remorse I had initially and enjoy using my chair!
"Great for the Aeron" by Simon
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Like many others, the center post on the Aeron was dragging in my new apartment with a higher pile. I bought these, and it was very easy to install.

I bought the wrong ones initially and got a call to confirm I got the correct ones, so I appreciate the customer service!
"Great for Aeron Chairs" by Dave
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My downstairs neighbors thank you. The casters are perfect for lifting the Aeron chair off the carpet. The center post drags (bad design) and when you sit the weight would go strait to the center post, banging the floor. The new casters work great, centering the load and allowing for smooth rolling. Well worth the investment.
"Perfect fit for Aeron" by Ken
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Shipped quickly and in good shape, fit perfectly, and raised the center post by almost an inch. Thx!
"Casters for Herman Miller Work Great!" by Tommy
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I needed some casters to raise the height on my Herman Miller Aeron to keep the center post from hitting the floor. Ordered from CasterDepot and they arrived quickly, worked great, and were much cheaper than ordering from Herman Miller. They match perfectly. Look just like the more expensive version.
"Great product that does the job" by Joe Buhler
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I got these larger casters for my Aeron chair to avoid having the cylinder scratch the floor. Order and delivery was flawless.
"Great upgrade to Aeron" by DR
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Put these on my Aeron to avoid dragging on my carpet. Fit was perfect and casters seem durable. Great price and fast shipping.
"Fixes the drag issue with Aeron chair" by D.Black
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I was a bit concerned that this would not work as I have the Aeron Size C (large) and I weigh ~260lbs. I've used a chair mat for years and the Aeron would just eat a whole in the area directly under the center post and clip. At $90 a mat, that gets expensive... considering these casters were less than $20 with shipping. They work prefect! No more dragging and very smooth rolling. Thanks Great Lakes Caster!
"Great for Aeron" by James
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My Aeron was scraping my chair mat, so I bought these larger wheels. They arrived quickly, and it took about a minute to swap them out. Perfect fit, and now I can glide more smoothly without scraping!
"Does what they say!" by Pippin
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Keeps my Aeron chair above my double padded carpet in my home office!! Also easy to roll around compared to the orig casters that came with the chair. I'm happy =]
"perfect replacement for the herman miller aeron" by jim
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My aeron chair drags on the carpet, I found these casters and it raised the chair so it no longer drags. Perfect pop-in fit
"Perfect for Aeron" by Ira
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Always wondered why this wasn't the default caster size for these chairs.
"No more chewing up the carpet" by Aeron chair owner
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I love my Aeron chair in my home office but the center post of the chair was dragging the carpet, and was starting to do some visual damage. These casters raise the center post about 1/2 inch, putting it well clear of the carpet. I guess home carpets are plusher than office building carpets. Replacement was easy - pull out the old casters and push in the new casters. Great Lakes has a similar caster with a shorter stem that looks to be the same length as the OEM caster stem, but these worked just fine.
"Perfect fit and Perfect function" by wguyth
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I had a friend to give me a new Aeron Chair that I am using in my home office. The chair had its standard wheels on it. When I got the chair home, I realized that the center post was dragging my carpet and even scraping on my desk mat.

I decided to give these casters a try, because I had read other reviews about them. I have to say what an awesome find. The extra 1/2" lift of the chair is perfect. Can't believe how much more stable and smooth my chair is now moving around and the price is outstanding.

If anyone has a problem with center post drags on their Aeron chair these casters are perfect. Great Lakes Caster was also very easy to work with and buy from.
"Superior Herman Miller Aeron Chair Casters" by Motorbikematt
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The infamous bottom clip on the Herman Miller Aeron chair seat posts was starting to drag on my aging chairmat carpet protector. Instead of pay $70 for a new mat, or more for Herman Miller replacements, I purchased 5 of these casters. These are EXACT fits, and the perfect upgrade to an already awesome, if just somewhat quirky office chair.
"Cheaper and better than a new chair!" by James
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I bought these because the center post of my office had begun dragging on the carpet. The chair I had previously suffered the same fate and was replaced, but this time I found a website detailing this company and specifically these casters. Swapping them out took 2 minutes and my chair is like new. Quick, easy and cheap fix!
"PERFECT!" by TQ
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These replaced the factory casters on my Aeron Chair, and they are fantastic. The center post of the base was scraping the floor, and these raised it up just enough to make my chair roll like it ought to.
"Aeron chair" by Jim F
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This was the perfect solution to raising the chair so that the center post doesn't ruin our carpeting. Couldn't believe how inexpensive it was compared to Herman Miller!!
"Excellent replacement for Herman Miller Aeron" by M. Baker
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The middle section piece of my Herman Miller Aeron chair was really close to hitting the ground when I sat in it, getting the larger casters made a huge difference, not only giving me more clearance underneath, but also allowing the chair to be adjusted to a higher full height! I'm pretty tall, so even a half inch makes a difference. These casters were easy to replace and are sturdy and solid. Very happy with this purchase!!
"Perfect for Aeron chair" by Richard M.
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Bought these casters to raise my Aeron office chair. The center post was dragging on our new carpet. The size of these casters makes the rolling easier, also. No need for one of those ugly plastic chair pads now.

Great price.
"perfect solution for the Aeron chair" by John in Chicago
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great product!! The chair is more stable and glides easily on the carpet. It no longer drags on the bottom and is elevated a couple inches. I would highly recommend these casters for an Aeron chair!
"Perfect fit" by Bob
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I got these to replace the stock casters on my Herman Miller office chair. The stock casters caused the middle pole to tear up carpet. These new casters fit perfectly, roll easily, and lifted the chair high enough not to damage the flooring.
"Great product, poor packaging." by J Hood
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I'm very happy with the product. The old casters came right off (watch out for grease!) and the new ones went right in. They wheels are much larger than the old ones.

The only negative aspect was that the casters were just thrown in a box with some newspaper on top and nothing underneath for cushioning.
"Great for Aeron Chairs" by Anonymous
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Thanks so much. These are great casters and the savings are immense over the Herman Miller deep carpet casters. They work perfectly. I am happily sitting on them now.
"TWUN-75N-G24-BK" by CP
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I bought these for my new Aeron chair. The stock casters were too small and caused the center stem of the chair to bottom out on the carpet. I could have replaced them with 3 inch casters from the manufacturer but that would have cost $100 for a set of 5. These 75mm casters from Great Lakes worked great. They lifted the chair enough off the carpet so that the chair can freely move. These are hard plastic casters so they should not be used on hardwood or stone floors because they will scratch the surface. So far, so good.

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