Office Chair Parts
Office Chair Parts Manufacturer for OEM & Custom Ergonomic Office Chair Components
Wholesale and custom-engineered office chair components designed for commercial furniture manufacturers, brand assemblers, and global distributors. Engineered for high-frequency daily use, our complete portfolio of seating hardware--including gas lifts, multi-function tilt mechanisms, aluminum bases, heavy-duty casters, and adjustable armrests--meets stringent international structural standards. Built with certified raw materials and produced via automated stamping, robotic welding, and precision CNC machining, our components deliver dependable mechanical performance and precise dimensional compatibility for standard and ergonomic office seating lines.
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![Five Star Base]()
Five Star BaseThe five star base is the main support structure at the bottom of most office chairs. It connects the gas lift in the center and distributes the load to five legs where the casters are installed....read more -
![Fixed Armrest]()
Fixed ArmrestA fixed armrest is often used in office chairs where a simple and stable structure is preferred. Compared with adjustable armrests, this type focuses more on durability and everyday practicality....read more -
![Single Seat Shell]()
Single Seat ShellThe single seat shell is a one-piece structural seating component designed to provide both support and a clean visual appearance. Instead of using separate frames and thick foam layers, this...read more -
![Ergonomic Seat Back Frame]()
Ergonomic Seat Back FrameFocusing on the segmented track of ergonomic furniture accessories, the ergonomic seat back frame is an enhanced reinforced backrest skeleton exclusively for high-end ergonomic chairs, with an...read more -
![Office Chair Back Frame]()
Office Chair Back FrameDrawing on 20 years of injection molding mold R&D experience, the office chair back frame is a universal backrest skeleton compatible with all categories of office chairs, with an annual export...read more -
![Plastic Office Chair Backrest]()
Plastic Office Chair BackrestWith 20 years of R&D and production focus on plastic office accessories, the plastic office chair backrest is a cost-effective entry-level backrest accessory with an annual shipment volume...read more -
![Ergonomic Mesh Back Support]()
Ergonomic Mesh Back SupportWith 20 years of deep cultivation in plastic injection molding accessories, the ergonomic mesh back support is the core support structure specially designed for mesh ergonomic chairs, with an...read more -
![High Strength Chair Back Shell]()
High Strength Chair Back ShellDeveloped and upgraded for heavy-load commercial and high-frequency usage scenarios, the high strength chair back shell is a high-strength protective backrest shell accessory with an annual export...read more -
![Injection Molded Chair Back]()
Injection Molded Chair BackDrawing on 20 years of accumulated injection molding technology, the injection molded chair back is our integrated one-piece molding bestseller backrest accessory, with an annual export volume...read more -
![Office Chair Back Support Frame]()
Office Chair Back Support FrameWith 20 years of R&D and production focus on plastic office chair accessories, the office chair back support frame is the core structural component that stabilizes the stress bearing of the entire...read more -
![Glass Fiber Reinforced Backrest]()
Glass Fiber Reinforced BackrestThe glass fiber reinforced backrest is an upgraded backrest plastic accessory specially developed for heavy-load commercial and long-term high-frequency sitting scenarios. The annual export volume...read more -
![Reinforced Nylon Chair Frame]()
Reinforced Nylon Chair FrameAs a source plastic injection molding manufacturer, the reinforced nylon chair frame is our core plastic accessory bestseller for export, with an annual export volume exceeding 300,000 pieces....read more
Office Chair Parts We Supply
Casters & Wheels
Dual-wheel swivel casters featuring injection-molded polyurethane treads and precision ball bearings for smooth, floor-protective rolling.
Adjustable Armrests
Ergonomic arm assemblies featuring 2D, 3D, and 4D multi-directional adjustment brackets and durable soft-touch polyurethane pads.
Seating Hardware & Accessories
Structural hardware components including seat mounting brackets, decorative trim covers, fastening screws, and tension springs.
Technical Specifications
|
Component Category |
Key Technical Parameters |
Standard Dimensions / Travel |
Compliance and Standards |
|
Mechanism Tilt Plates |
Cold-rolled steel (SPCC/Q235); thickness 2.5mm to 3.0mm; tilt lock positions |
Standard mounting hole patterns (e.g., 150x150mm, 154x154mm) |
BIFMA X5.1 static load and fatigue tested |
|
Star Bases |
Die-cast aluminum alloy (ADC12) or high-density nylon plus fiber; rib-reinforced underside |
Radius: 320mm, 350mm, 380mm; Center taper hole: diameter 50mm |
BIFMA drop test and static load >= 1360 kg |
|
Casters |
PU tread injection molded over nylon core; precision dual-ball bearing raceways |
Wheel diameter: diameter 50mm, diameter 60mm, diameter 65mm; Stem: 11x22mm, 10x22mm |
ANSI/BIFMA swivel cycle durability (100,000 cycles) |
|
Armrests |
PA6+GF structure; PU or soft-touch TPU pads; steel adjustment brackets |
Height adjustment: 70mm to 100mm; 3D/4D multi-directional movement |
BIFMA arm strength vertical/horizontal load tested |
Load-Bearing Integrity: Mechanism plates utilize stamped rib profiling and high-tensile structural steel to prevent permanent deformation under continuous off-center loading.
Fatigue Resistance: Gas cylinders undergo high-frequency pneumatic cycle testing exceeding 300,000 compression cycles without pressure degradation or fluid leakage.
Impact Strength: Star bases feature internal structural webbing designed to distribute localized impact forces, passing drop tests exceeding 1,360 kg static load application.
Swivel and Rolling Durability: Casters incorporate hardened steel axles and sealed dual-bearing raceways, resisting hair/debris binding and maintaining smooth directional tracking under heavy loads.
Dimensional Compatibility
Standardized Interfaces
Engineered to international tolerance standards, ensuring seamless retrofitting and assembly with standard commercial seat pans, backrests, and gas springs.
Precision Taper Fits
Gas lift upper tapers (conical 1:10 to 1:12) and mechanism hub receptacles are machined via CNC turning centers to maintain exact angular alignment, preventing wobbling or component seizure.
Stem and Socket Mating
Caster stems are manufactured with precise snap-ring groove tolerances to secure firmly into star base sockets while allowing straightforward field replacement.
Materials
Metals
Cold-rolled carbon steel (SPCC), structural alloy steel (Q235), and ADC12 die-cast aluminum ingot.
Polymers
Virgin nylon 6 (PA6), glass-filled nylon (PA6+GF30) for high-stress structural housings, and thermoplastic polyurethane (TPU/PU) for floor-protective caster treads.
Surface Treatments
Multi-stage zinc plating, black electrophoretic deposition (ED coating), electrostatic epoxy powder coating, and high-gloss chrome plating tested for salt spray corrosion resistance (ASTM B117).
Customization
Dimensional Modifications
Custom stroke lengths for gas lifts, non-standard base radii, and tailored mounting hole configurations for proprietary mechanism plates.
Finishes and Branding
Laser-etched client logos on gas lift outer tubes or aluminum bases; custom color-matched powder coating and injection-molded plastic trims.
Functional Integration
Proprietary lock-tilt configurations, synchronized tilt ratios, and customized armrest adjustment ranges (2D, 3D, 4D, 5D).
In-House Processing: Integrated production lines incorporating automated tube cutting, CNC stamping presses (160T to 500T), robotic MIG/MAG welding cells, and automated powder coating lines.
Dimensional Inspection: Coordinate Measuring Machines (CMM) and digital optical projectors verify hole pitches, wall thicknesses, and taper angles against CAD specifications.
Rigorous Testing Protocol:
- Pneumatic Pressure Testing: 100% burst and pressure decay testing on gas cylinders.
- Cyclic Fatigue Testing: Automated pneumatic test rigs simulating long-term swivel, tilt, and caster rolling under maximum rated loads.
- Salt Spray Testing: 48-hour corrosion resistance checks on plated and coated metallic hardware.
OEM/ODM Process
Technical Consultation: Review of client 2D and 3D CAD drawings, target load specifications, and regulatory compliance requirements (BIFMA/EN).
Prototype Development: Rapid prototyping and sample fabrication within 7 to 14 business days, accompanied by initial material test reports (MTR).
Pilot Run and Verification: Small-batch trial production followed by in-house structural and dimensional validation.
Mass Production and Quality Sign-Off: Full-scale manufacturing with serialized lot tracking, pre-shipment inspections (PSI), and compliance documentation prior to container loading.
Applications
Task and Task-Intensive Seating
Standard office swivel chairs, 24-hour dispatch and control room seating.
Executive and Conference Seating
Mid-back and high-back executive chairs requiring heavy-duty multi-function mechanisms and polished aluminum bases.
Institutional and Educational Furniture
Task chairs for training rooms, universities, and healthcare facilities subject to high utilization cycles.
Our Certificate
FAQ
As one of the most professional office chair parts manufacturers and suppliers in China, we also support customized service. We warmly welcome you to buy high quality office chair parts made in China here and get pricelist from our factory. For price consultation, contact us.