Office Chair Hydraulic Certification

Office chair hydraulic certification must meet core European, Chinese, and international standards, covering safety, durability, and environmental protection requirements, as detailed below:

I. European Standards

1. EN 14960 Special Standard: Imposes strict requirements on the full lifecycle safety of hydraulic lifting devices, including static load testing (to verify structural strength), over 100,000 cycles of fatigue testing (to simulate long-term use), accidental lifting prevention locking tests (to prevent uncontrolled lifting due to misoperation), and pressure-bearing leakage tests (to ensure sealing).
2. EN 1335 Series Standards: EN 1335-2 specifies strength and stability requirements for seats, backrests, and lifting components. Hydraulic rods must be compatible with the rated load capacity of the seat and pass dynamic strength tests (such as simulating frequent user lifting scenarios).
3. EU Supporting Regulations:
   • REACH Regulation: Restricts the content of harmful substances such as phthalate plasticizers, lead, and cadmium to reduce health risks.
   • CE Marking: Products must undergo conformity assessment and retain technical documentation to prove compliance with EU safety, health, and environmental protection requirements.
   • Paints Directive (2004/42/EC): If hydraulic components have decorative coatings, they must comply with VOC (volatile organic compound) emission limits to reduce air pollution.

II. Chinese National Standards
GB/T 22856-2021 'Office Furniture - Office Chairs': Requires that pneumatic rods maintain sealing integrity after 120,000 cycles of testing (higher durability than European standards) and that five-star bases withstand a static pressure of 1,136 kilograms without breaking (to verify structural stability). Domestic reputable brands (such as Yongyi and Henglin) typically need to pass this standard certification.

III. International Certifications

1. German TUV Certification: Pneumatic rods must be filled with high-purity nitrogen (≥97%) to reduce explosion risks and pass thermal stability tests (to ensure performance stability under high-temperature conditions).
2. Korean KGS Level 3 Certification: Hydraulic rods lift more smoothly (reducing jolts), but at a higher cost, mostly used in high-end products.

IV. Safety Tips

1. Usage Guidelines: Do not disassemble, heat, or strike hydraulic rods without authorization (which may damage sealing or trigger explosions). Use only original and compliant parts for replacement or repair.
2. Purchase Considerations: Look for pneumatic rods with complete stamp numbers (such as CLASS 3 or CLASS 4 ratings). The higher the rating, the stronger the load-bearing capacity and durability.

Office chair hydraulic components that have passed the above certifications can ensure compliance with safety, durability, and environmental protection standards, reducing usage risks.