---
product_id: 143354091
title: "MingYi.office Heavy Duty Gas Cylinder Replacement for Herman Miller Classic Aeron Chair, Class 4 TUV"
brand: "mingyi.office"
price: "¥11460"
currency: JPY
in_stock: true
reviews_count: 13
category: "Ming Yi.Office"
url: https://www.desertcart.jp/products/143354091-mingyi-office-heavy-duty-gas-cylinder-replacement-for-herman-miller
store_origin: JP
region: Japan
---

# 4-inch smooth height adjustment travel Fits all Aeron sizes A, B & C (1996-2012) Class 4 TUV certified heavy-duty gas lift MingYi.office Heavy Duty Gas Cylinder Replacement for Herman Miller Classic Aeron Chair, Class 4 TUV

**Brand:** mingyi.office
**Price:** ¥11460
**Availability:** ✅ In Stock

## Summary

> 🪑 Elevate your Aeron, elevate your workspace—comfort that commands respect!

## Quick Answers

- **What is this?** MingYi.office Heavy Duty Gas Cylinder Replacement for Herman Miller Classic Aeron Chair, Class 4 TUV by mingyi.office
- **How much does it cost?** ¥11460 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/143354091-mingyi-office-heavy-duty-gas-cylinder-replacement-for-herman-miller)

## Best For

- mingyi.office enthusiasts

## Why This Product

- Trusted mingyi.office brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Heavy Load Ready:** Supports up to 350 pounds, engineered to handle the demands of your busiest workdays without compromise.
- • **Worry-Free Warranty:** Backed by a 5-year replacement warranty—because your productivity deserves reliable support.
- • **Effortless Height Control:** 4-inch travel range ensures smooth, precise chair height adjustments for optimal ergonomic comfort.
- • **Universal Aeron Compatibility:** Seamlessly fits Classic Aeron chairs Size A, B, and C made between 1996-2012—upgrade your vintage office throne.
- • **Built to Last, Certified to Perform:** Class 4 TUV gas cylinder exceeds ANSI/BIFMA5.1-2011 standards for unmatched durability and safety.

## Overview

The MingYi.office Heavy Duty Gas Cylinder is a Class 4 TUV certified replacement part designed specifically for Herman Miller Classic Aeron chairs made from 1996 to 2012. It offers a robust 350-pound load capacity, smooth 4-inch height adjustment travel, and fits all Aeron sizes A, B, and C. Exceeding ANSI/BIFMA5.1-2011 standards, this cylinder ensures long-lasting performance and comes with a 5-year warranty, making it the ultimate upgrade for your iconic office chair.

## Description

Buy MingYi.office Heavy Duty Gas Cylinder Replacement for Herman Miller Classic Aeron Chair, Class 4 TUV: Home Office Desk Chairs - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Excellent aftermarket cylinder for Aeron - This China aftermarket gas cylinder for Aeron was EASY to install, fit perfectly and worked immediately upon installation. I DID have an extremely difficult time removing the original HM cylinder from the chair. It had been there for decades. The online videos made the removal look way easier than it was. It took a number of overnight WD-40 soaking, the biggest heaviest pipe wrench I could get and a LOT of aggression in numerous sessions to incrementally move that old cylinder a few millimeters at a time. When it finally came out, the new one slipped in like a charm, what a surprise, it was a good quality purchase. The chair being an original HM Aeron would cost close to $1K to replace...and was a Great Incentive to put up with the hassle.
Review: Get ready to wrench that old cylinder right out of there! - 25 year old Herman Miller Aeron chair that's done right be me all this time finally gave up the ghost a few days ago, the cylinder extended to its full height in its dying gasp and wouldn't go down and when I sat down on it I wobbled around disconcertingly. Being uneducated about the cylinder replacement I tried to force it down until it ended up all the way down and wouldn't go back up, laugh. I watched the replacement videos and thrilled to the prospect of using my large pipe wrench for the second time. New one arrived and boy the reviews and testimonials about removing old crusted cylinders was really spot on in my case. It took WD-40 and multiple angle attempts, I think I finally did it by pulling the wrench towards me like I was rowing! Once that was done, and knocking out the old cylinder from the legs with a hammer it was an easy peasy replacement. Note, remember to take off the protective tip on the new cylinder so you expose the green part. I had to adjust the set screw as others have w/ a 5/32 hex wrench, I didn't have to take off the seat I just popped the shroud off and wrenched it from the back. Now I'm back in business with my old war-horse. Will it be another 25 years? We'll see. Recommended. (j4.)

## Features

- Heavy Duty Gas lift cylinder For Hermanmiller Classic Aeron Office Chair, Class 4 TUV.
- Exceeds ANSI/BIFMA5.1-2011 standards, based on the specs of this cylinder, it's load capacity is 350 pounds.
- Length Compressed: 11.5" Fully Extended: 15.5" Travel: 4.0", Cylinder Diameter: 28mm (1.1") Column Diameter: 50mm (approx 2")
- After install, If the chair can't lift normally. Two screws located near where the cable attaches need to be adjusted, see photo 4.
- Cylinder Can fit Aeron Chair Size A, B and C, offer 5 years replacement warranty.Only For Classic Aeron chair made between1996-2012.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QF8XDCQ |
| Additional Features | Ergonomic |
| Age Range Description | Adult |
| Arm Style | Armless |
| Assembly Instructions Description | Already assembled |
| Back Style | Solid Back |
| Best Sellers Rank | #395,411 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #905 in Home Office Desk Chairs |
| Brand | MingYi.office |
| Brand Name | MingYi.office |
| Chair Backrest Width | 420 Millimeters |
| Color | Black |
| Cushion Style | Boxed Edge |
| Customer Reviews | 4.4 out of 5 stars 295 Reviews |
| Fill Material | Foam |
| Finish Types | Unfinished |
| Form Factor | Metal |
| Frame Material Type | Metal |
| Furniture Base Movement | Glide |
| Furniture Finish | Stainless Steel |
| Indoor Outdoor Usage | Indoor |
| Is Customizable? | No |
| Is Electric | No |
| Is Foldable | No |
| Item Depth | 25 inches |
| Item Dimensions | 25 x 25 x 25 inches |
| Item Dimensions D x W x H | 25"D x 25"W x 25"H |
| Item Weight | 1.15 Kilograms |
| Leg Style | Tapered Leg |
| Manufacturer | Samhongsa |
| Manufacturer Part Number | Cylinder-H |
| Material | Metal |
| Material Type | Metal |
| Maximum Weight Recommendation | 350 Pounds |
| Model Name | Cylinder for Classic Aeron |
| Model Number | Cylinder-H |
| Number of Height Positions | 1 |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Product Dimensions | 25"D x 25"W x 25"H |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Office |
| Required Assembly | No |
| Room Type | Office |
| Seat Back Interior Height | 450 Millimeters |
| Seat Depth | 17.72 inches |
| Seat Height | 420 Millimeters |
| Seat Length | 560 Millimeters |
| Seat Material | Nylon |
| Shape | Round |
| Size | 2D x 2W x 11.8H |
| Style Name | Classic |
| Surface Recommendation | Hard Floor |
| Theme | Space |
| Tilting | No |
| UPC | 778862838788 743832019153 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** MingYi.office
- **Color:** Black
- **Material:** Metal
- **Product Dimensions:** 25"D x 25"W x 25"H
- **Size:** 2D x 2W x 11.8H

## Images

![MingYi.office Heavy Duty Gas Cylinder Replacement for Herman Miller Classic Aeron Chair, Class 4 TUV - Image 1](https://m.media-amazon.com/images/I/41YGR3Z6a9L.jpg)
![MingYi.office Heavy Duty Gas Cylinder Replacement for Herman Miller Classic Aeron Chair, Class 4 TUV - Image 2](https://m.media-amazon.com/images/I/41gdV-rDxKL.jpg)
![MingYi.office Heavy Duty Gas Cylinder Replacement for Herman Miller Classic Aeron Chair, Class 4 TUV - Image 3](https://m.media-amazon.com/images/I/61GRvn+FsoL.jpg)
![MingYi.office Heavy Duty Gas Cylinder Replacement for Herman Miller Classic Aeron Chair, Class 4 TUV - Image 4](https://m.media-amazon.com/images/I/914CZYmY-FL.jpg)
![MingYi.office Heavy Duty Gas Cylinder Replacement for Herman Miller Classic Aeron Chair, Class 4 TUV - Image 5](https://m.media-amazon.com/images/I/51urp1MxJeL.jpg)

## Questions & Answers

**Q: Does this make the chair taller?**
A: Yes, it makes the chair Taller. The original Herman Miller cylinder sit about 2 inches past the wheel base. The heavy duty cylinder sold here sits taller as it doesn’t go past the base.
Hope this helps!

**Q: What are the bottom taper dimensions?**
A: about 45mm, thank you!

**Q: does this come with the bearing already installed**
A: Yes, the bearing installed already, Inside outer tube, thank you!

**Q: How can you tell how old the chair is (if it is between 1996 and 2012)?**
A: Check the serial number and or Part numbers on the chair. Call the manufacturer my chair was a Herman Miller chair and they were able to tell me when it was sold to me and that I had a 10-year warranty... S0 the numbers on the chair sometimes indicate MFG year. Good Luck

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent aftermarket cylinder for Aeron
*by A***1 on September 21, 2023*

This China aftermarket gas cylinder for Aeron was EASY to install, fit perfectly and worked immediately upon installation. I DID have an extremely difficult time removing the original HM cylinder from the chair. It had been there for decades. The online videos made the removal look way easier than it was. It took a number of overnight WD-40 soaking, the biggest heaviest pipe wrench I could get and a LOT of aggression in numerous sessions to incrementally move that old cylinder a few millimeters at a time. When it finally came out, the new one slipped in like a charm, what a surprise, it was a good quality purchase. The chair being an original HM Aeron would cost close to $1K to replace...and was a Great Incentive to put up with the hassle.

### ⭐⭐⭐⭐⭐ Get ready to wrench that old cylinder right out of there!
*by J***V on June 20, 2024*

25 year old Herman Miller Aeron chair that's done right be me all this time finally gave up the ghost a few days ago, the cylinder extended to its full height in its dying gasp and wouldn't go down and when I sat down on it I wobbled around disconcertingly. Being uneducated about the cylinder replacement I tried to force it down until it ended up all the way down and wouldn't go back up, laugh. I watched the replacement videos and thrilled to the prospect of using my large pipe wrench for the second time. New one arrived and boy the reviews and testimonials about removing old crusted cylinders was really spot on in my case. It took WD-40 and multiple angle attempts, I think I finally did it by pulling the wrench towards me like I was rowing! Once that was done, and knocking out the old cylinder from the legs with a hammer it was an easy peasy replacement. Note, remember to take off the protective tip on the new cylinder so you expose the green part. I had to adjust the set screw as others have w/ a 5/32 hex wrench, I didn't have to take off the seat I just popped the shroud off and wrenched it from the back. Now I'm back in business with my old war-horse. Will it be another 25 years? We'll see. Recommended. (j4.)

### ⭐⭐⭐⭐⭐ Hermin Miller Classic gas cylinder replacement
*by K***M on February 17, 2026*

Works great and did not need to purchase directly from Herman Miller Manufacture.

## Frequently Bought Together

- Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement
- Lumbar Support Pad Replacement for Herman Miller Classic Aeron Chair - Size B: Medium,Black
- Seat Pad Foam Insert Replacement for Herman Miller Classic Aeron Office Chair A B C Size (Black, A/B)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-09*