Internal gear ring

We are Ningbo Tuona Transmission Equipment Co., Ltd. Our factory has made gears and transmission parts for 6 years. Our factory is 2500 square meters. We have 30 workers. We have no own R&D team. We follow national and industry standards. We meet local environmental rules. Our old company was Ningbo Haishu Tuochuang Gearbox Co., Ltd. We started in July 2020. We closed it in November 2024. We re-registered as Ningbo Tuona in 2024. Our legal person is Wu Jialu. Our sales reached about 12 million RMB by the end of 2025. The Internal gear ring is also called an internal gear ring. We can make many sizes. Internal gear rings are used in planetary reducers, gearboxes, and drive shafts. We also make spline sleeves, pump bodies, and gearbox parts. We have no complaints in 6 years.

We support OEM and ODM. You can bring drawings or samples. We machine by your drawing, process, and technical needs. We control heat treatment and quenching. Our MOQ is 10 units or more. You can mix different sizes or models in one order. Standard products ship in 20 days. Custom products ship in 1 month. Our monthly capacity is about 250 units. Bulk orders get a 2-3% discount. We do not offer free samples. Custom sample development takes 45 days. We accept third-party inspection. We do full inspection for small batches. We do 100% inspection for planetary reducers and gearboxes. We provide a 1-year warranty. We replace faulty products for free. We pay the shipping cost. For overseas customers, we refund the full machine cost and round-trip freight. We have a dedicated after-sales person in China. We do not have a dedicated overseas after-sales person yet.

The Internal gear ring is a key part for many machines. We have 6 machining centers, 2 turn-mill machines, 3 gear hobbing machines, 3 gear shaping machines, 6 CNC lathes, and 1 projector. By the end of May, we will add 1 CMM, 2 machining centers, and 2 CNC lathes. These machines keep our precision stable. Our clients are in Wuxi (4), Anhui (1), and Yancheng (1). Their products go to the USA, North America, Europe, and Southeast Asia. Our payment term is 30% deposit and 70% balance. We only support FOB. We accept USD or RMB. During production, we send photos and videos. Repeat orders ship faster. We pack by customer request. We welcome factory visits. If you need an Internal gear ring, please contact us. We offer custom solutions. We produce by your requirements. We guarantee quality. We deliver on time.

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