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Taizhou Sihai Machinery Co., Ltd. specializes in high-performance helical gearmotors, worm gearboxes, speed variators, and custom power transmission solutions trusted globally across packaging, mixing, and environmental industries.
Explore ProductsTaizhou Sihai Machinery Co., Ltd. has been a trusted manufacturer and exporter of industrial power transmission products for over a decade. With a strong focus on quality, innovation, and customer satisfaction, we specialize in RV series worm gearboxes and a wide range of helical, hypoid, and planetary gear systems.
Our products are engineered to deliver reliable performance under demanding conditions and are widely used in packaging, environmental protection, mixing, and automation industries. We are committed to providing high-quality transmission solutions at competitive prices to clients worldwide.
Discover our comprehensive lineup of industrial gearboxes, motors, and transmission systems designed for durability, efficiency, and precision performance.
High-efficiency RV series worm gear reducers ideal for compact installations requiring high torque and low noise.
Parallel shaft helical gear units offering high efficiency, low backlash, and long service life.
Stepless speed control units for precise adjustment in automation and conveyor systems.
Right-angle hypoid gearboxes with superior load capacity and smooth operation.
Compact co-axial helical gear units ideal for space-constrained applications.
Integrated AC motor + helical gearbox for direct drive applications.
Miniature helical gearmotors for light-duty automation and precision control.
High-precision planetary reducers for servo and robotic applications.
Torque arms, mounting flanges, output shafts, and replacement parts.
Engineered for reliability, efficiency, and long-term performance in industrial environments.
All products meet international safety and performance standards.
High-tolerance machining ensures smooth operation and long life.
Built to withstand dust, moisture, and continuous operation.
OEM and custom designs available to meet specific requirements.
Sihai gearboxes are trusted in diverse industrial environments for their reliability and performance.
Used in wastewater treatment, sludge mixers, conveyor systems, and filtration equipment requiring reliable, low-maintenance operation.
Ideal for filling machines, labeling systems, capping units, and conveyor drives where precision and compact design are critical.
Powering agitators, mixers, and reactors in chemical, food, and pharmaceutical industries with high torque and smooth operation.
Standard warranty is 18 months from the date of shipment. Extended warranty options are available upon request.
Yes, we offer OEM and custom design services. Please contact our engineering team with your specifications.
Yes, comprehensive installation, operation, and maintenance manuals are available for all models on our website.
Our products are CE certified and manufactured under ISO quality management standards.
Standard products: 15–20 days. Custom orders: 25–40 days depending on complexity.
For product inquiries, technical support, or custom solutions, visit our official website to contact the Sihai team directly.
Access product catalogs, manuals, and contact forms directly through our official domain.
Visit Official WebsiteFor international inquiries, we respond within 24 business hours.
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