---
product_id: 241985461
title: "MingYi.office Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement"
brand: "mingyi.office"
price: "538.84 DT"
currency: TND
in_stock: true
category: "Ming Yi.Office"
url: https://www.desertcart.tn/products/241985461-mingyi-office-gas-cylinder-heavy-duty-for-herman-miller-classic
store_origin: TN
region: Tunisia
---

# 4.5-inch smooth seat height travel Class 4 heavy-duty pneumatic lift 350 lbs load capacity, ANSI/BIFMA certified MingYi.office Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement

**Brand:** mingyi.office
**Price:** 538.84 DT
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your Aeron experience — precision, power, and peace of mind in one lift!

## Quick Answers

- **What is this?** MingYi.office Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement by mingyi.office
- **How much does it cost?** 538.84 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/241985461-mingyi-office-gas-cylinder-heavy-duty-for-herman-miller-classic)

## 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

- • **Built to Endure:** Class 4 gas cylinder engineered to support up to 350 pounds, exceeding industry safety standards.
- • **Seamless Compatibility:** Designed exclusively for Herman Miller Classic Aeron chairs (1996-2012) sizes A, B, and C.
- • **Upgrade Your Workspace:** Restore your iconic Aeron chair’s premium comfort and stability with a reliable, OEM-grade replacement.
- • **Precision Height Control:** Effortlessly adjust your Aeron chair with a 4.5-inch stroke for perfect ergonomic positioning.
- • **Trusted Quality Assurance:** Backed by a 5-year replacement warranty and manufactured by Samhongsa, a leader in office chair cylinders.

## Overview

The MingYi.office Class 4 pneumatic gas cylinder is a heavy-duty replacement part designed specifically for Herman Miller Classic Aeron chairs made between 1996 and 2012. Featuring a 4.5-inch seat height adjustment stroke, a robust 350-pound load capacity, and compliance with ANSI/BIFMA5.1-2011 standards, this cylinder ensures smooth, reliable chair height control. Manufactured by Samhongsa, a trusted industry leader, it comes with a 5-year warranty, making it a durable and compatible upgrade for restoring your Aeron chair’s ergonomic performance.

## Description

Product description Package Include: 1 x gas cylinder(chair not included.)Samhongsa was founded in 1971, is a professional production and sales of Cylinder for office chair. Samhongsa have advanced production equipment and testing equipment and improved management system. Samhongsa always insist on the operation idea of “human-oriented, honesty first, lean management and excellence” Providing perfect quality and service for users and possess the good reputation. Samhongsa’s cylinder have acquired and through eight world standards certifications(Such as: BIFMA；LGA；TUV；SGS, ect.). Samhongsa have built a friendly, long-term with Herman Miller, Allsteel, Steelcase, HON, etc. world-renowned brands. Only For Aeron chair made between 1996-2012. Safety Warning For indoor use only. Recommended for the office.

## Features

- Listing is for a brand new never used CLASS 4, office chair seat height adjustment pneumatic gas lift cylinder. 4.5" stroke (seat travel from lowest to highest settings).
- 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: 16" Travel: 4.5", 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 2.
- Cylinder for Aeron Chair Size A, B and C, offer 5 years replacement warranty.Only For Aeron chair made between 1996-2012.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QF8XDCQ |
| Age Range Description | Adult |
| Arm Style | Armless |
| Assembly Instructions Description | Already assembled |
| Back Style | Mesh Back |
| Best Sellers Rank | 1,643,021 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 3,137 in Desk Chairs |
| Brand Name | MingYi.office |
| Chair Backrest Width | 420 Millimetres |
| Colour | Black |
| Cushion Style | Boxed Edge |
| Customer Reviews | 4.4 4.4 out of 5 stars (280) |
| Finish Type | Unfinished |
| Form Factor | Swing chair with mesh back and height adjustment |
| Frame Material Type | Metal |
| Furniture Base Movement | Glide |
| Furniture Finish | Alloy Steel |
| Included Components | Gas Cylinder |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required? | No |
| Is Customizable? | No |
| Is Foldable | No |
| Item Depth | 16 inches |
| Item Dimensions | 6 x 6 x 30 centimetres |
| Item Dimensions D x W x H | 63.5D x 63.5W x 63.5H centimetres |
| Item Shape | Cylindrical |
| Item Weight | 1.13 kg |
| Leg Style | Sled Base |
| Manufacturer | Samhongsa |
| Manufacturer Part Number | Cylinder-H |
| Material Type | Alloy Steel |
| Maximum Weight Recommendation | 158.76 kg |
| Model Name | Classic Aeron |
| Model Number | Cylinder-H |
| Number of Height Positions | 1 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Office |
| Room Type | Office |
| Seat Back Interior Height | 450 Millimetres |
| Seat Depth | 45 centimetres |
| Seat Height | 16 Inches |
| Seat Length | 560 |
| Seat Material Type | Foam |
| Size | 2D x 2W x 11.8H in |
| Sleeping Bag Filling Material | Foam |
| Style Name | Contemporary |
| Surface Recommendation | Hard Floor |
| Theme | Modern |
| Tilting | No |
| UPC | 778862838788 743832019153 |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** MingYi.office
- **Colour:** Black
- **Material:** Alloy Steel
- **Product dimensions:** 63.5D x 63.5W x 63.5H centimetres
- **Size:** 2D x 2W x 11.8H in

## Images

![MingYi.office Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement - Image 1](https://m.media-amazon.com/images/I/41YGR3Z6a9L.jpg)
![MingYi.office Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement - Image 2](https://m.media-amazon.com/images/I/21br6yiv5iL.jpg)
![MingYi.office Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement - Image 3](https://m.media-amazon.com/images/I/41gdV-rDxKL.jpg)
![MingYi.office Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement - Image 4](https://m.media-amazon.com/images/I/41OT0obAUDL.jpg)
![MingYi.office Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement - Image 5](https://m.media-amazon.com/images/I/51evXgS-YZL.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

## 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 Tunisia*
*Store origin: TN*
*Last updated: 2026-10-10*