China SK-4000U 4000 Ton Two-Platen Injection Molding Machine - Reliable Suppliers & Factory Solutions
Product Introduction
SK-4000U 4000Ton Two-Platen Injection Molding Machine: The Flagship Benchmark Redefining Ultra-Large Industrial Molding Excellence
As the flagship top-spec model of the SK-U two-platen series, the SUCCESSOR SK-4000U Two-Platen Injection Molding Machine redefines excellence in industrial-grade ultra-large component manufacturing, delivering unparalleled power, industry-leading precision, and maximum production efficiency for the most demanding production environments. This machine is the ultimate solution for the most challenging large-scale production scenarios in heavy industry, automotive manufacturing, and aerospace, where the ability to flawlessly produce the largest, most complex structural components is the only acceptable production standard. Built with an ultra-high-rigidity heavy-duty clamping unit and L-shaped precision guidance rails on a massive reinforced integral frame, it guarantees a platen movement accuracy of ±0.05mm—even for the largest, most complex extra-large components. This ensures that molding quality is never a variable, but a constant, in every single production cycle.
Protecting your most valuable tooling investment is a paramount design objective for the SK-4000U. The machine features an upgraded shock-free synchronous braking system, enhanced with an advanced multi-stage buffered mechanism. This allows for rapid, impact-free clamping even under maximum tonnage, which not only shields high-value ultra-large molds from damaging shock loads, but also ensures exceptional long-term operational stability, leading to a significantly extended service life for both the machine and the tooling. The machine's design is the epitome of versatility and adaptability for ultra-large component production; the independent high-pressure cylinder facilitates controlled slow high-pressure mold opening and makes tie-bar extraction simple and effortless. This makes the SK-4000U an ideal choice for facilities with low-headroom constraints, and allows for highly flexible production layouts in large-scale manufacturing plants.
The machine's structural integrity is further reinforced by specially treated heavy-duty guide posts that ensure over 99% force uniformity across the massive platen, effectively preventing eccentric loading during high-pressure clamping and guaranteeing long-term machine reliability. The reinforced heavy-duty platen construction provides enhanced mold-closing stability for ultra-large molds, while the extended stroke is engineered to accommodate extra-deep-cavity molds, offering a significant cost advantage over traditional three-plate alternatives. For ultimate operational command, the machine is equipped with high-response dual proportional valves and an instantaneous response system, delivering the kind of precision that reduces cycle times and maximizes production throughput for ultra-large components. The streamlined design simplifies maintenance tasks, and the automated computer-controlled setup enables fast, accurate, and repeatable mold adjustments, minimizing changeover downtime. The SK-4000U is the ultimate solution for the most demanding ultra-large scale industrial production, perfectly balancing power, precision, and cost-effectiveness to set a new industry benchmark in heavy-duty injection molding.
Beyond its unrivaled structural strength and precision, the SUCCESSOR SK-4000U integrates intelligent control and energy-saving technologies to adapt to the evolving demands of modern industrial manufacturing. Equipped with a high-performance intelligent control system, it supports real-time parameter monitoring, data analysis, and remote operation, enabling seamless integration into smart factory ecosystems and reducing manual intervention errors. Its optimized hydraulic system and energy-efficient configuration significantly lower power consumption compared to conventional ultra-large injection molding machines, while the precision temperature control (±1℃ accuracy) and advanced plasticizing system ensure uniform material melting, reducing material waste by up to 12% and further enhancing production cost-effectiveness. Designed to cater to the most critical application scenarios—from automotive panels and aerospace structural parts to heavy industry components—the SK-4000U not only meets the strictest quality standards of global manufacturers but also delivers consistent, reliable performance that translates to higher productivity, lower total operational costs, and a sustainable competitive edge in ultra-large component manufacturing.
Core Engineering Highlights
Shock-Free Synchronous Braking
A buffered transmission structure enables prompt and dependable clamping performance, entirely eliminating mechanical impact.
Independent High-Pressure Cylinder
Achieves controllable progressive high-pressure opening, and facilitates effortless tie-bar withdrawal, suitable for compact low-headroom installations.
High-Rigidity Precision Guidance
L-shaped guide rails integrated with a robust frame maintain ±0.05mm machining accuracy, ensuring agile and stable platen displacement.
Durable Guide Posts
Subjected to special heat & surface treatment. More than 99% stress uniformity eliminates eccentric load damage and optimizes service lifespan.
Exceptional Precision in Mold Opening Position
±0.2mm repeatable opening accuracy, 5× more precise than standard three-plate machines (1200-ton internal verified).
Ultra-Sensitive Mold Protection
SK-U intelligent deceleration meets A4 paper rebound standard. Instant stop on slight obstruction for reliable mold protection.
High-Speed Performance, Lower Cycle Times
Faster dry cycles and quick mold opening/clamping, directly increasing productivity and output (1200-ton internal verified).
Partial product
Machine Specifications
| MODEL | SK-4000U | ||
| Description | Item | Unit | B |
| INJECTION UNIT | Screw Diameter | MM | 260 |
| Screw L/D Ratio | L/D | 22 | |
| Shot Size (Theoretical) | CM³ | 79640 | |
| Injection Weight (PS) | G | 72473 | |
| Injection Rate | G/S | 3141 | |
| Plasticizing Capacity | G/S | 297 | |
| Injection Pressure | MPA | 127 | |
| Screw Speed | RPM | 0 - 40 | |
| CLAMPING UNIT | Clamp Tonnage | KN | 40000 |
| Space Between Tie Bars | MM | 2400×2000 | |
| Opening Stroke | MM | 3500/2300 | |
| Max. Mold Height | MM | 2200 | |
| Min. Mold Height | MM | 1000 | |
| Max.daylight | MM | 4500 | |
| Ejector Stroke | MM | 550 | |
| Ejector Tonnage | KN | 550 | |
| Ejector Number | PCS | 33 | |
| OTHERS | Max.・Pump Pressure | MPA | 17.5/21 |
| Pump Motor Power | KW | 60 + 60 + 60 + 60 + 60 + 21 | |
| Heater Power | KW | 310 | |
| Machine Dimension (LxWxH) | M | 20.1×5.4×6.0 | |
| Machine Weight | T | 256 | |
| Oil Tank Capacity | L | 4500 | |
Certifications
Company Exhibition
Clients plants site
Packaging & Shipping
