Gearbox forgings are core components of marine and port machinery.
Applications
They provide power transmission and speed regulation for ship propulsion systems and port handling equipment, adapting to complex operating conditions.
Manufacturing Process
Produced using high-quality alloy forging, precision machining, and strict quality inspection measures.
Services
Cover customized production, after-sales technical support, and maintenance.
Advantages
Featuring high strength, wear resistance, and impact resistance, they adapt to harsh marine and port environments. The design ensures "mounting hole concentricity error ≤0.02mm," preventing eccentric loads during gear meshing and reducing tooth wear, thus extending equipment service life.
ACE Group is a comprehensive enterprise group focused on the heavy industrial manufacturing sector, serving as a China Gearbox Forgings Supplier and Gearbox Forgings Company. Its business spans forging, heat treatment, precision machining, welded structures, and heavy-duty power & free chain spraying production. This integrated layout covers the core production processes of the industrial machinery industry, combining technological strength with large-scale production capabilities.
Core Subsidiaries Details:
Jiangsu ACE Energy Technology Co., Ltd.: The group's core production base, officially commencing operations in November 2025. It occupies 55 acres with a total floor area exceeding 50,018 square meters. The factory is equipped with 3-ton, 5-ton, and 15-ton electro-hydraulic hammers; 1-meter and 1.5-meter vertical ring rolling machines; energy-efficient natural gas heating furnaces; heat treatment resistance furnaces; quenching tanks; induction hardening equipment; machining centers; and other production equipment.
Yancheng ACE Machinery Co., Ltd.: Established in 2019, it occupies 20 acres with a floor area of 13,333 square meters. It possesses an integrated welding-straightening structural steel production line and a precision machining workshop.
Yancheng ACE Surface Treatment Technology Co., Ltd.: Operates a heavy-duty power & free chain large-scale powder coating production line. Focusing on professional surface treatment technology, One-time coating thickness achieves 400μm, providing reliable anti-corrosion and weather-resistant protective performance and appearance optimization solutions, enhancing the group's full life-cycle product services.
ACE Group is supported by a management team of young key members who are experienced in materials, heat treatment, machining, and surface treatment industries. They are well-versed in international and domestic standards, pioneering, and committed to innovation. The subsidiary ACE Machinery has passed TÜV Rheinland ISO 9001 Quality Management System certification, as well as ISO 14001, 45001, and 50001 system certifications. It is recognised as a Specialised, Refined, Unique, and Innovative Enterprise, a National High-Tech Enterprise, and holds a 3A-level enterprise credit rating.
Relying on integrated MES and ERP management systems, the integration of informatisation and industrialisation, data cloud storage, and aiming to build a modern, energy-efficient enterprise, the group maintains a comprehensive inspection system. It possesses inspection tools, non-destructive testing equipment, and qualified personnel, implementing strict controls from material internal quality to appearance and dimensions. All outgoing products undergo 100% inspection, adhering to the business philosophy of pursuing 100% qualified outgoing products and zero customer complaints. A CNAS-standard laboratory will be established to provide scientific testing support for quality control during production and technological R&D, thereby enhancing product quality and technological innovation.
In the future, ACE Group will continue to leverage the technical advantages and industrial synergies of its subsidiaries. Through standardised production, specialised technology, integrated services, and a stringent quality control system, it is committed to providing efficient and reliable industrial manufacturing solutions for global clients, steadily advancing towards becoming a leading comprehensive manufacturing service provider in the industry.
After 6 months of precision engineering and collaboration, we are proud to announce the completion of our 700m rail supply for the Berendrechtsluis Lock renovation project at the Port of Antwerp-Bruges, Europe's largest integrated port. The final container, carrying 15 pieces of our 34CrNiMo6 QT T-type heavy-duty T-typ...
View MoreOn January 17, 2026, the inaugural annual gala of Jiangsu ACE Energy Technology Co., Ltd. was triumphantly held in an atmosphere brimming with enthusiasm. Over 160 attendees, including distinguished guests from various sectors, partners, government representatives, as well as the company's employees and their families,...
View MoreWith a resounding clang of the hammer, a new journey begins! Recently, the grand opening ceremony of Jiangsu ACE Energy Co., Ltd.'s forging base and the launch ceremony for the "first hammer" production were held in the Dafeng Economic Development Zone Industrial Park, Jiangsu Province. As ACE Energy Chairman Zhai Liuy...
View MoreIn the demanding environments of maritime propulsion and port logistics, the reliability of power transmission is not just a requirement—it is a safety imperative. Gearbox forgings serve as the critical mechanical heart of these systems, responsible for converting high-speed engine output into the massive torque needed to move vessels and heavy containers.
At ACE Group, we leverage our integrated manufacturing layout—from electro-hydraulic hammer forging to precision induction hardening—to produce components that exceed international maritime standards.
In marine and port machinery, components face "shock loading" (sudden stops and starts). Forging creates a refined grain structure that follows the part's geometry, providing 30% higher fatigue strength than casting.
| Feature | ACE Group Gearbox Forgings | Conventional Cast Components |
| Microstructure | Dense, aligned grain flow | Porous, random crystalline structure |
| Impact Resistance | Excellent (High fracture toughness) | Moderate (Risk of brittle failure) |
| Dimensional Stability | Concentricity Error ≤ 0.02mm | Error typically > 0.10mm |
| Surface Hardness | Customizable via Induction Hardening | Difficult to achieve uniform hardness |
The most common cause of premature gearbox failure is eccentric loading. Even a microscopic misalignment in mounting holes causes uneven pressure on gear teeth, leading to "pitting" and eventual tooth breakage.
The ACE Advantage:
Our precision machining centers ensure that mounting hole concentricity error is maintained within ≤ 0.02mm.
The Result: Perfect gear meshing alignment.
The Benefit: Reduced friction heat, significantly lower decibel levels during operation, and a 30-50% extension in equipment service life.
Our production capability is backed by Jiangsu ACE Energy Technology and our specialized surface treatment facilities, ensuring a seamless transition from raw ingot to finished product.
Material Forging: Using 15-ton electro-hydraulic hammers to ensure deep penetration and density in large-scale gear blanks.
Precision Heat Treatment: Utilizing resistance furnaces and induction hardening to achieve the "Hard Surface, Tough Core" duality required for impact resistance.
Advanced Surface Coating: Yancheng ACE Surface Treatment provides heavy-duty powder coating with a one-time thickness of 400μm, offering C5-standard anti-corrosion protection against salt spray in harsh marine environments.
| Component Type | Material Grades (Typical) | Key Applications |
| Main Propulsion Gears | 18CrNiMo7-6, 42CrMo4 | Ship engine gearboxes, Tugboat propulsion |
| Planet Carriers | 34CrNiMo6, 40CrNiMo | High-torque planetary reducers for port cranes |
| Input/Output Shafts | AISI 4140, 4340 | Connection between engines and gear units |
| Ring Gears | 20CrMnTi, 17CrNiMo6 | Large-scale slewing mechanisms for port loaders |
Q1: How does ACE Group ensure the quality of forgings for offshore use?
A: Every product undergoes rigorous Non-Destructive Testing (NDT), including Ultrasonic (UT) and Magnetic Particle (MT) inspection. Furthermore, our subsidiary ACE Machinery is certified by TÜV Rheinland ISO 9001, ensuring compliance with global maritime standards.
Q2: Why is the 400μm coating thickness significant for port machinery?
A: Port equipment operates in highly humid, saline environments. Standard coatings (80-120μm) often peel under mechanical stress. Our 400μm heavy-duty coating provides a superior barrier that resists both chemical corrosion and physical abrasion from handling operations.
Q3: Can ACE Group handle customized small-batch orders for specialized gearboxes?
A: Yes. Our integrated layout—combining the agility of our 3-ton/5-ton hammers with high-precision machining centers—allows us to support both large-scale OEM production and customized, non-standard "one-off" components for specific engineering projects.
Q4: What is the impact of the ≤ 0.02mm concentricity on maintenance costs?
A: Precision concentricity prevents "localized wear" on bearings and gear teeth. By eliminating eccentric loads, users typically see a significant reduction in unplanned downtime and a decrease in the frequency of bearing replacements.