CenturyShine 勝家聖
TC
TC
Product Overview
TC series chair base is produced using private molds and fiberglass-reinforced nylon, providing specifications for radius, center distance from base center to castor socket, castor socket diameter, gas lift taper and vertical distance.
This series is available in Ø 300, 320 and 350 mm specifications.
Product Specifications
Product Specifications
- Radius: 300 / 320 / 350 mm
- Castor C.C.: 277 / 300 / 330 mm
- Castor Socket: 11 mm
- Gas Lift Taper: Standard 1:10 (50-1°26′16")
- Vertical Height: 130 / 135 / 140 mm
- Material: PA+G
Technical Documentation
Technical Documentation

Frequently Asked Questions
Technical Specifications & Compatibility
Q: What is the taper specification of the center hole? How do you ensure compatibility with our gas lifts?
A: We utilize a precision 1:10 taper (half-angle 1°26′16"). This ensures a tight-tolerance fit with standard gas lifts, effectively preventing wobbling, tilting, or abnormal noise after long-term use.
Q: What is the specification for the caster mounting holes? Is it compatible with mainstream casters?
A: The base comes standard with an international 11mm socket diameter. This ensures that stem casters remain perfectly vertical and secure without tilting after installation.
Q: What are the vertical height and radius measurements of the chair base?
A: The vertical height are 130, 135, 140mm and the radius are 300, 320, 350mm. We provide detailed technical drawings with these measurements to help your R&D team pre-calculate the minimum seat height, ensuring the final chair meets international ergonomic standards.
Structural Strength & Compliance
Q: What is the material composition of this chair base? How is high load capacity guaranteed?
A: We utilize PA+G Material. Compared to standard plastics, we have increased the glass fiber ratio to enhance fatigue resistance and impact strength, ensuring safety during high-frequency commercial use. Additionally, the base features an internal star-shaped reinforcement rib design, which maximizes bending resistance and structural integrity.
Procurement, Logistics & Supply Chain Flexibility
Q: What is the Minimum Order Quantity? Do you support bulk exports and provide Certificates of Origin?
A: We fully support large-scale OEM/ODM procurement and possess extensive export experience. As a Taiwan-based manufacturer, we can provide a Certificate of Origin to facilitate your global market strategy, helping you optimize import duties and streamline customs clearance.
Q: Do you offer full chair assembly or knocked-down shipping options?
A: We offer flexible shipping configurations. You may purchase components individually, or entrust us to integrate other parts for complete chair assembly or Knocked-Down shipping. This flexibility is designed to reduce assembly complexity at your end-destination and optimize container space.