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Black metal gas lift cylinder with 2 inch diameter piston

WORKPRO Gas Lift Cylinder 3.9" Stroke 500 lb Class 4 Black

SKU CH-NEGR-8RX6Q

Replaces worn office-chair lifts with a 2" universal piston, 3.9" stroke and 500 lb Class-4 rating

  • MaterialMetal
  • Compatibility/FitmentAdhesives; Enamels; Epoxies
  • Lifting Capacity500 pounds
  • Pull Capacity500 pounds
  • Universal 2" diameter fits most office chairs
  • 9" stroke adjusts height from 9.84" to 13.78
  • Class 4 heavy-duty construction supports up to 500 lbs
  • Tool-free installation upgrades your chair in minutes
  • High-quality iron material extends the life of your office chair

Gas lift cylinder for office chairs

The WORKPRO gas lift cylinder replaces worn-out pistons on standard office chairs. It uses a 2-inch diameter column and a 3.9-inch stroke that adjusts seat height between 9.84 and 13.78 inches. The class-4 construction is rated for 500 pounds of lifting and pull capacity.

Suits heavier users and high-use seating

This cylinder suits anyone whose current chair sinks under their weight or has lost height adjustment. It is not for stools or chairs that require a narrower or wider piston diameter. Buyers needing a longer or shorter travel range should look at the 4.7-inch or 5.5-inch stroke models instead.

Fits universal chair bases and mechanisms

The standard 2-inch column slides into most five-star bases and chair mechanisms without special tools. Installation takes minutes and restores full height function. The iron body resists wear, freeing you from frequent replacements and keeping the existing chair frame in service.

Highlights

  • Universal 2" diameter fits most office chairs
  • 9" stroke adjusts height from 9.84" to 13.78
  • Class 4 heavy-duty construction supports up to 500 lbs
  • Tool-free installation upgrades your chair in minutes
  • High-quality iron material extends the life of your office chair

Specifications

BrandWORKPRO
MaterialMetal
Compatibility/FitmentAdhesives; Enamels; Epoxies
Lifting Capacity500 pounds
Pull Capacity500 pounds

Questions about this item

What existing chair base diameter does the 2-inch piston require?

The cylinder uses a standard 2-inch diameter column that fits almost every office chair base with a matching 2-inch centre hole.

How does the 3.9-inch stroke compare with the 4.7-inch and 5.5-inch models when the original chair cylinder is reused?

This unit adjusts from 9.84 to 13.78 inches, a shorter range than the 4.7-inch and 5.5-inch versions, so the seat will sit lower at its highest setting.

After fitting the cylinder, how can I confirm the 500-pound class-4 rating is functioning?

Sit in the chair and verify smooth height adjustment through the full 3.9-inch travel without sinking or jerking under your weight.

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