28″ Heavy Duty Office Chair Base Replacement Parts | for Most Office/Desk Chair – 2400 Lbs Capacity Matte Black Metal Chair Legs with Universal Casters Sockets
Price: $35.99 - $32.39
(as of Jul 29, 2026 07:06:47 UTC – Details)
Product description
INDUSTRY-STANDARD CONSTRUCTION
Rythalix office chair base features precision-crafted chrome steel, engineered for ANSI/BIFMA-compliant durability.
28-INCH REINFORCED FRAME
28-inch diameter metal base provides 40% greater surface contact than standard designs, significantly reducing lateral motion.
STRUCTURAL INTEGRITY SYSTEM
Triangular bracing geometry supports 500lb dynamic capacity (ASTM F1858-15 validation), maintaining stability during active use.
ENGINEERED SAFETY PERFORMANCE
Radius-optimized edge design ensures consistent floor engagement, minimizing operational hazards.
▶ Universal Compatibility & Clear Size Specs: Fits most common office chair types, including swivel chairs, gaming chairs, and executive chairs. Designed to work with chair casters that measure 7/16 inch x 7/8 inch (11 mm x 22 mm) and gas cylinders with a 2-inch (5 cm) diameter. Please confirm your chair’s caster and gas cylinder dimensions before purchase to ensure a proper fit.Unsure? Reach out, and we’ll help you verify compatibility hassle-free.
▶ Extra Heavy-Duty Reinforced Steel Build & Reliable Load Capacity: Crafted from 45-grade steel with cross-bracing reinforcement, this base offers exceptional durability for both home office and commercial use. It supports a maximum weight capacity of 2400 lbs, providing sturdy performance for intensive daily use—ideal for replacing worn or standard-duty chair bases.You won’t have to worry about premature failure—we prioritize durability.
▶ Tool-Free Quick Installation & Floor Protection: Annoyed by complicated installations or scratched flooring? No tools needed: just pop casters into the base sockets and insert the gas cylinder—done in 90 seconds. We’ve added non-scratch rubber feet to protect hardwood, tile, and smooth floors (no chair mats required). The set includes cotton gloves to keep your hands clean during setup—we make the process effortless.
▶ Stable Design: 28″ Diameter + Low Center of Gravity: With a 28-inch diameter, this base is 40% wider than most standard office chair bases. Its low center of gravity design reduces wobbling during use, offering stable support for users up to 6 feet 5 inches tall. Perfect for long hours of sitting, it enhances overall chair safety and comfort.
▶ Lifetime Warranty + US Local Support : We offer a lifetime warranty for the office chair base: if the office chair base becomes unstable, damaged, or malfunctions due to manufacturing defects, please provide your order number – we will send a replacement from our US warehouse within 24 hours, no questions asked. Whether you need assistance with installation, compatibility checks, or warranty claims, we are always here to help.
