Office Chair Specifications

Office chair specifications typically cover core parameters such as seat height, seat depth, seat width, backrest height, and armrest height, with specific designs needing to balance ergonomics and adaptability to usage scenarios. The following provides an in-depth explanation from various dimensions:

Seat height is a key parameter affecting sitting comfort. The seat height range for conventional office chairs is 400 mm to 550 mm, designed primarily to match standard office desks (height 700 mm to 760 mm), ensuring that when seated, the desktop and elbow height are coordinated, preventing arm suspension or excessive elevation. Fixed-style office chairs usually have a seat surface size of 40 to 45 cm, but adjustable models are more recommended, with a regulation range of up to 38 to 48 cm, accommodating leg length differences among people of varying heights, especially beneficial for users with significant height differences (e.g., 1.5 meters to 1.9 meters).

Seat depth directly affects leg support. The standard seat depth range is 400 mm to 500 mm, designed to support 2/3 to 3/4 of the user's thigh length while avoiding pressure on the blood vessels and nerves behind the knee. If the seat depth is too short, the front of the thighs will be suspended; if too long, it may compress the knee, causing poor blood circulation or numbness.

Seat width needs to meet different body type requirements. The conventional seat width is 450 mm to 600 mm, covering the hip width of most adults. For users with wider body types or those needing a side-sitting posture (e.g., draftsmen), a wide seat design of over 550 mm is recommended; for spaces with limited room (e.g., small office cubicles), a compact seat width of around 450 mm can be chosen.

Backrest height needs to match the human spine curve. The backrest height for ordinary office chairs is 500 mm to 700 mm, focusing on supporting the thoracic to lumbar regions. High-end models often come with adjustable lumbar support modules, allowing precise matching of the user's lumbar physiological curve through up-and-down or front-and-back adjustments (with a regulation range of about 50 mm), alleviating fatigue from prolonged sitting. Some models with headrests can reach a total height of 120 cm, supporting the neck, but attention should be paid to the angle coordination between the headrest and the seat surface.

Armrest height needs to match the desk height. The standard armrest height is 200 mm to 300 mm, ensuring that when the arms are placed naturally, the elbows are bent at 90 to 100 degrees, reducing shoulder and neck strain. Special models (e.g., split armrests connected with steel plates) require attention to the steel plate thickness, with a recommended thickness of 6 to 8 mm for enhanced load-bearing capacity and durability.