Founded in 2003, Taizhou Sihai Machinery is specialized in designing and producing speed reducers, including worm gear speed reducer, bevel gear reducer, helical gearbox, planetary gearbox, etc. Equipped with excellent research and development team, we are able to offer customized gearbox solutions in addition to existing products.

With a workshop area of 16,000 m2, we have a monthly production of 30,000 speed reducers. We also purchase a series of processing equipment like CNC lathes, CNC milling machines, CNC machining center, gear hobbing machine and gear grinding machine to guarantee machining precision and speed. And each processing link is subject to quality inspection by professional staff to ensure product quality.

All our products must pass quality tests like vibration detection, oil leak detection and sealing detection before delivery. To protect the product from damages during long distance transportation, our products are packaged by shrink film, bubble pack, small cardboard box, and wooden tray in turn.

We provide all the products sold out with one-year warranty in case there is quality problem, technicians will be arranged to offer on-site service.

Taizhou Sihai Machinery is dedicated to satisfying demanding requirements, with our quality gearboxes exported to countries and regions including America, Britain, Italy and Spain. Certificated by ISO9001, our design, manufacture, management and service have gained recognition by hundreds of long-lasting cooperation partners. Welcome to discuss with us about speed reducers and look forward to cooperating with you.

Why can we produce high quality gearboxes?

1. Our technical team has conducted thousands of design and experiments.
2. We adopt high quality raw materials.
3. All spare and accessory parts are produced by ourselves with guaranteed quality.
4. All the gear reducers are tested before packaging.