400T Cold Chamber Die Casting Machine Aluminum Five-star Chair Base Diecast

Purpose-built for manufacturing heavy-load aluminum alloy five-star office chair bases, swivel chair pedestals and gaming chair spider bases, this 400-ton cold chamber die casting machine delivers high-density, impact-resistant one-piece castings that meet strict BIFMA furniture safety standards. As core load-bearing parts of office chairs, 5-star bases bear long-term static load and frequent rotating torsion, requiring outstanding structural rigidity and fatigue resistance. This 400T equipment achieves integrated forming of thick-wall reinforced chair bases, effectively avoiding fracture and deformation under long-term heavy load, making it the ideal production solution for high-end executive chairs and heavy-duty gaming chair bases.

Built on a heavy-duty reinforced frame architecture, the machine is fitted with high-strength tie bars, enlarged wear-resistant steel pins and extra-thick machine platens to match its 400-ton clamping force. This robust structure delivers exceptional impact resistance and load stability during high-pressure die casting, minimizing mold deflection and mechanical vibration under continuous heavy-load operation. For chair base production, it ensures uniform material density at the central mounting hole and five supporting legs, eliminating internal porosity that would cause load-bearing failure. The rigid construction also reduces long-term mechanical deformation, extends equipment service life and fully adapts to non-stop heavy-duty production of load-bearing aluminum furniture parts.

At its core is a genuine German PLC control system paired with a full-color human-machine interface touchscreen, enabling real-time precise monitoring and adjustable control of injection speed and pressure. Built-in closed-loop control technology supports graded fine-tuning of the entire injection cycle, ensuring complete and dense filling of thick-wall reinforcing ribs and central load-bearing structures without cold shuts or shrinkage defects. This guarantees consistent load-bearing capacity across every batch of chair bases, passing strict static pressure and impact tests. The simplified electrical circuit design maintains stable and reliable operation even in high-temperature workshop environments, and the integrated fault display function quickly locates electrical abnormalities to cut unplanned downtime.

The hydraulic system runs on dual-proportional control architecture, delivering fully programmable multi-stage injection and buffered low-pressure mold clamping to protect precision chair base mold cores from impact damage. All hydraulic seals are sourced from premium European or Japanese brands, ensuring long-term leak-free and stable operation under sustained 400-ton clamping pressure. A hydraulic die height adjustment system enables fast, labor-saving mold installation and changeover, reducing setup time for different chair base sizes and styles. An automatic pressure relief energy-saving function effectively cuts unnecessary hydraulic energy consumption during continuous operation, lowering overall production costs.

The clamping and die height adjustment mechanism ensures uniform stress distribution across the large platen surface and stable mold positioning, avoiding unbalanced leg thickness and central hole deviation of 5-star bases. The injection unit with high-flow valves and a precision piston accumulator provides powerful, consistent injection force that fully fills complex rib-reinforced chair base molds. Equipped with a high-efficiency oil cooling system, the machine maintains stable hydraulic temperature during long-shift production, supporting a reliable service life of 15 to 20 years. An optional mold sweeping robotic arm is available to upgrade production automation.

We guarantee shipment within 20 days of order confirmation. Our service package includes 2-hour rapid response plus 24-hour on-site after-sales support, dedicated one-on-one technical guidance, on-site commissioning by certified engineers, and lifelong technical assistance. We also warmly welcome all customers to visit our factory for on-site inspection and technical exchange.