Chongqing Gearbox Co., Ltd. (“Chongchi”) is owned by China Shipbuilding Industry Corporation (CSIC) . Located in Jiangjin District of Chongqing city, the company has 2000 employees and occupies 900,000m2. Founded in 1966, it changed its title from Yongjin Machinery Plant to Sichuan Gearbox Plant in 1982, then to its current name in 1997.
The company is specialized in the R&D and production of case-hardened gears and gearboxes, driving trains combining mechanical, electrical and hydraulic components. With products finding wide application in various industries and sectors such as shipbuilding, offshore engineering, cement building material, metallurgy, traditional energy, distributed clean energy, railway transportation, engineering machinery, gas mining, solid waste treatment etc.., the company has expanded into the only supplier in CSIC Corporation for production of gearboxes, couplings and dampers for naval ship purpose. The company, as a top military supplier, is not only one of the largest R&D bases domestically for case-hardened gears, but also the research and production base for rear transmission equipments of the naval propulsion system.
The company, grounding upon its core competence in mechanical transmission research and development, cherishes any innovating ideas and endeavors to put into practice
The technical system of the company includes six design institutes, one key basic technology research institute, one digital research and development platform, one technical management platform and one physical & chemical testing center, forming three innovation systems of product design, process manufacture and quality guarantee and technology support.
The company has built the digital research and development platform of gearbox prototype. By using modern design and analysis tools such as CAD/CAE, Masta, KissSoft, Romax and using international standards and rules including ISO, DIN ,AGMA, CCS, ABS, BV, DNV, GL, LR, the company has formed its own unique design and manufacturing technology and always maintained a leading position in China and achieves advanced international level concerning high precision case-hardened gears and high & low speed heavy loading gear driving systems.
公司建有大型高精齿轮检测实验室，并获得CNAS、DIL AC认证，可对直径5000mm以内，重量15000kg 以下，2级精度以内的齿轮进行检测。拥有世界先进水平的3级精度大型齿轮传动装置研制能力。
The company has one large-size high precision gear inspection laboratory, which has attained CNAS, DIL AC certification. Gears with diameter within 5,000mm and weight lower than 15,000kg and accuracy within grade 2 can be inspected.
The company has 1.5MW～ 13MW series complex function testing benches for loading gearbox. By using the high precision strain test data acquisition system, both the whole gearbox and its assemblies can be tested and validated to ensure the high quality and reliable performance of the product prior to delivery.
The company owned lots of great innovative achievement caused by the excellent design / manufacture/inspection/and testing capability.
Succeed to develop various type of marine gearbox with super power. The maximum power transmission is 50000HP which make new records in domestic market.
Succeed developed 5 series high-precision gearboxes for Building materials industry and succeed developed the first set of vertical mill gearbox for 12000TPD cement product line in domestic market.
Succeed developed 2MW-7MW speed-up wind turbine gearbox. And 10 types of wind turbine gearbox including 600KW-3MW were achieved mass production. More than 20 years experiences get the fantastic achievement.
According to the DIN standard, the company designed the gearbox in climbing slip lift system for the famous Three Gorges Dam project.
The single open joints turnout gearbox was batch using in Chongqing light railway 2# and 3# projects. The flexible turnout gearbox was first used in 3# project second stage and ends the import gearbox monopoly.
During the identify testing, the planetary gearbox for nuclear power station seawater recycle pump which designed and developed by the company self, was get the evaluation as "achieved international advanced level" by CNNC inspectors including a China academician Mr,Ye qiqi.
The company has about 190 national patents, including 25 invention patents. It has successfully taken on many national technical projects concerning advanced manufacture, high-tech ship, energy fields and has obtained 60 provincial-level technological awards. Additionally, 28 national and
industrial standards have been drafted or revised by the company.
The company has built a competent R&D team of 500 people, among them 115 with Doctor or Master degree, over 166 engineers or senior engineers, 16 are pioneers in the fields of mechanical precision manufacture, heat treatment and welding, etc., 5 enjoy the State Council Special Allowance and 3 are listed into 511 Talent Project of Defense S&T Industry. The company owns 2 members in National Gear Committee, 1 national expert with outstanding contribution, 1 consulting expert of China Academy of Engineering.
As a national technology center, the company will continue exploration & innovation and all round service to become the most competitive driving industry group in the worldwide market.