The ErgoLift Pneumatic Spindle is a heavy-duty piston cartridge designed to replace standard office chair pneumatic cylinders. With a 350 lb rating and a 4" stroke/travel, it is typically used on task chairs. The main body is 1.1" (28mm) in diameter and 9" long (not including the piston or trigger), and the tapered end that goes into the seat plate/mechanism has a standard 17-4 taper. The steel used in the spindle is heat-treated, resulting in a black color and increased strength compared to standard silver steel. Additionally, 8" and 10" long cartridges are also available in the eBay store.
4" Stroke Pneumatic Gas Cylinder Piston Heavy Duty. This standard gas lift pneumatic cylinder piston is designed to adjust the height of drafting stools and workbench chairs. Typically used on executive swivel tilt rocking chairs.
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