Changzhou Colewell Machinery Co., Ltd.

● Extended Length (Fully Extended Gas Lift):

300mm to 450mm (Depending on the chair or table’s required height adjustment)

450mm to 600mm (Used for large or tall adjustable tables)

● Stroke Length:

80mm to 150mm (Most common for office chairs, providing sufficient height adjustment for most users)

150mm to 200mm (For adjustable desks or taller chairs)

200mm to 250mm (Used for chairs or furniture requiring extra height adjustment, such as high stools or ergonomic chairs)

● Cylinder Diameter:

28mm (Standard for most office chairs and lightweight applications)

35mm (Commonly used in ergonomic and office chairs for medium weight capacity)

50mm (Used for heavier-duty applications, including executive chairs, gaming chairs, and adjustable tables)

✅ Height Adjustment: 300-600mm extended (80-200mm stroke)

✅ Premium Material: Steel/stainless steel + fluororubber seals

✅ Weight Capacity: 100-200kg+

✅ Wide Fit: Gaming & computer chairs (standard/high-back/executive)

✅ Easy Install: Multiple standard/custom joints

✅ Flexible MOQ: 200pcs

● Total Length (Fully Extended):

This can range from 350mm to 550mm, depending on the specific model and the stroke length of the cylinder.

● Stroke Length:

100mm to 150mm: This range is common for most standard office and gaming chairs, providing a good height adjustment range.

150mm to 200mm: This length is used for chairs requiring larger height adjustments, often in executive or heavy-duty chairs.

● Cylinder Diameter:

28mm: This size is often used for lighter duty chairs like basic office chairs or smaller gaming chairs.

35mm: This is the most common diameter for medium-duty chairs, including standard office chairs, gaming chairs, and task chairs.

● Total Length (Fully Extended):

Typically ranges from 350mm to 550mm, depending on the model and stroke length. The extended length determines how high the chair can be adjusted.

● Stroke Length:

80mm to 120mm: Typical for most standard office chairs and gaming chairs with normal height adjustment requirements.

120mm to 150mm: Often used in tall chairs or executive models where a larger range of height adjustment is needed.

150mm to 200mm: Used for extra tall chairs or chairs with adjustable height requirements for special ergonomic needs.

● Compressed Length:

The compressed length (when not extended) is typically between 200mm and 300mm, depending on the cylinder's design and stroke length.

● Total Length (Fully Extended):

The fully extended length for small gas lift cylinders generally ranges from 350mm to 450mm, depending on the model and stroke length.

●Stroke Length:

80mm to 100mm: This range of stroke length is common for small gas lift cylinders, providing a basic height adjustment suitable for light office chairs or chairs that don’t require extensive vertical movement.

100mm to 120mm: Slightly longer stroke lengths, used for medium-sized chairs that require a bit more height flexibility but are still categorized as small in terms of usage.

● Cylinder Diameter:

28mm: This is the most common diameter for small gas lift cylinders, typically used in light-duty office chairs, task chairs, small gaming chairs, and executive chairs that don’t need to support heavy weights.

22mm to 25mm: Sometimes used in very small or compact chairs, such as children's chairs or lightweight task chairs, offering a more compact design.