Does this make the chair taller?

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!

does this come with the bearing already installed

Yes, the bearing installed already, Inside outer tube, thank you!

How can you tell how old the chair is (if it is between 1996 and 2012)?

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

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🚀 Elevate your workspace with precision power and lasting comfort!

BUILT TO ENDURE - Crafted from premium alloy steel, this Class 4 cylinder surpasses ANSI/BIFMA5.1-2011 standards, supporting up to 350 lbs with ease.
SEAMLESS COMPATIBILITY - Designed exclusively for Herman Miller Aeron chairs (sizes A, B, and C) manufactured between 1996-2012—upgrade without compromise.
EFFORTLESS INSTALLATION - Includes simple adjustment screws for perfect lift calibration post-installation—get back to work faster and more comfortably.
PRECISION HEIGHT CONTROL - Effortlessly adjust your Aeron chair with a reliable 4.5-inch pneumatic stroke for perfect ergonomic positioning.
TRUSTED QUALITY ASSURANCE - Backed by a 5-year replacement warranty and manufactured by Samhongsa, a leader with eight global certifications and decades of expertise.

The MingYi.office Class 4 gas cylinder is a heavy-duty, pneumatic seat height adjuster engineered specifically for Herman Miller Aeron chairs (1996-2012). Featuring a 4.5-inch travel stroke, 350-pound load capacity, and premium alloy steel construction, it exceeds industry standards for durability and performance. Supported by a 5-year warranty and manufactured by Samhongsa, a trusted global leader, this replacement cylinder ensures seamless compatibility and effortless ergonomic upgrades.

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€ 99.41

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Irelandstore

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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Brand	MingYi.office
Model Number	Cylinder-H
Color	White
Product Dimensions	63.5 x 63.5 x 63.5 cm; 1.13 kg
Material	Alloy Steel
Special Features	Heavy, Heavy Duty, Gas, Travel, Height Adjustment, Seat
Item Weight	1.13 Kilograms

MingYi.office Gas Cylinder Heavy Duty for Herman Miller Classic Aeron Chair as Replacement

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