Finding reliable helical gear manufacturers can be a daunting task. With countless suppliers worldwide, how do you ensure the gears you choose meet your exact specifications, deliver long-lasting performance, and integrate seamlessly into your industrial applications? Precision, durability, and efficiency are critical, whether you’re sourcing for automation systems, heavy machinery, or custom engineering projects. In this article, we’ve compiled a list of the Top 10 Helical Gear Manufacturers in the World 2026, highlighting industry leaders that combine quality, innovation, and global reach.
Explore their capabilities, compare products, and check and ask for a quote to find the perfect partner for your power transmission needs.
Top 10 Helical Gear Manufacturers in the World 2026：
1. SEW‑EURODRIVE GmbH & Co. KG
4. Bonfiglioli Riduttori S.p.A.
6. Stock Drive Products / Sterling Instrument (SDP/SI)
1. SEW‑EURODRIVE GmbH & Co. KG
Main Products: Helical gears, gear units, gearmotors, drive systems.
Overview: SEW‑EURODRIVE is a globally recognized leader in drive automation and precision gear manufacturing, specializing in high‑performance helical gears, gear units, and complete power transmission systems. Founded in 1931 in Bruchsal, Germany, SEW integrates advanced gearbox design with intelligent drive technology and mechatronics, supporting industries such as material handling, logistics automation, mining, and heavy machinery worldwide. Known for modular helical and bevel‑helical gear units optimized for smooth power transfer, SEW’s products exhibit outstanding reliability, efficiency, and energy savings. By continually investing in R&D and global production facilities, SEW maintains a robust international footprint and enduring reputation for quality in motion control and industrial gear solutions.
2. Siemens AG
Main Products: Precision helical gears for industrial machinery, wind turbines, power generation gear systems.
Overview: Siemens AG is a major industrial technology powerhouse with a strong position in the global helical gear and power transmission markets. Through its Flender brand and integrated automation platforms, Siemens produces a wide range of industrial gearboxes, helical gear units, and synchronized transmission systems that power heavy industries, energy infrastructure, and manufacturing automation. Siemens’ engineering focus emphasizes digital monitoring, condition‑based maintenance, and high‑efficiency designs that enhance performance and reduce operating costs. With a comprehensive portfolio of robust gear solutions and extensive global services, Siemens helps OEMs and industrial operators achieve scalable, reliable power transmission and turnkey motion systems across Europe, the Americas, and Asia.
3. ZF Friedrichshafen AG
Main Products: Automotive and industrial helical gears, transmission systems, driveline components.
Overview: ZF Friedrichshafen AG is one of the world’s largest automotive and industrial technology manufacturers, renowned for its advanced transmission systems and precision helical gearing solutions. Headquartered in Friedrichshafen, Germany, ZF produces a broad spectrum of driveline components, gearboxes, and industrial drives for automotive OEMs, commercial vehicles, aerospace applications, and heavy machinery. ZF’s helical gears and powertrain components are engineered for high torque capacity, durability, and seamless integration with electronic control systems, making them ideal for demanding industrial and transport applications. With over 160 production locations globally and a diversified customer base, ZF continues to lead in gear manufacturing innovation and global supply chain reach.
4. Bonfiglioli Riduttori S.p.A.
Main Products: Helical gearboxes, helical gear reducers, modular drive solutions.
Overview: Bonfiglioli Riduttori is an Italian manufacturer widely recognized for its high‑quality gearboxes, helical gear units, and modular drive systems serving multiple industrial sectors. Founded in 1956, Bonfiglioli combines Italian mechanical engineering tradition with global production and distribution networks, offering robust power transmission solutions for applications in construction machinery, wind energy, logistics, and automation. Its helical and bevel‑helical gear products are engineered for energy efficiency, compact form factors, and long service life, backed by strong R&D and global technical support. With operations in over 80 countries, Bonfiglioli’s drive solutions help customers optimize system performance and reduce maintenance costs in industrial automation and mobile equipment markets.
5. Power Transmission Group
Main Products: Custom helical gears, gearbox parts, bevel gears, worm gear sets.
Overview: Power Transmission Group (PTG) is a leading U.S. provider of engineered helical gears, custom gear components, and complete gearbox solutions for industrial applications worldwide. Specializing in custom manufacturing, reverse engineering, and high‑precision gear production, PTG supports sectors such as material handling, energy, and heavy equipment with tailored helical gearboxes that meet stringent performance and durability requirements. Through a comprehensive suite of engineering services and manufacturing capabilities, the company delivers optimized power transmission solutions that improve reliability and operational uptime. PTG’s commitment to quality and customer‑centric design has secured its position as a trusted partner for complex industrial gear systems and bespoke powertrain components.
6. Stock Drive Products / Sterling Instrument
Main Products: Standard and custom helical gears, precision power transmission components.
Overview: Stock Drive Products / Sterling Instrument (SDP/SI) is a global supplier of precision power transmission components, including standard and custom helical gears, gear racks, and motion control solutions. With a strong emphasis on quality manufacturing and wide product availability, SDP/SI serves industries ranging from automation and robotics to instrumentation and medical devices. Their helical gears are designed for smooth performance, low vibration, and reliable torque transfer in both standard and bespoke configurations. Supported by extensive engineering resources, SDP/SI helps customers accelerate prototyping and production timelines with readily available precision gear products that simplify system design and integration.
7. KHK (Gear Manufacturing)
Main Products: Helical gears, spur gears, racks, internal gears, precision gearing.
Overview: KHK (Kohara Gear Industry) is Japan’s foremost standard gear manufacturer, offering an extensive catalog of high‑quality helical gears, spur gears, bevel gears, and racks for engineering and industrial power transmission applications. Known for its efficient inventory management and rapid delivery capabilities, KHK provides both standard and customized gear solutions that reduce lead times and simplify procurement. Its precision helical gear products are engineered for consistent quality and durability, serving diverse sectors including automotive, robotics, machine tools, and automation equipment. With decades of experience and global distribution, KHK remains a key choice for engineers seeking reliable gear components with extensive size and material options.
8. W.M. Berg
Main Products: Precision helical gears, gearboxes, custom gear solutions.
Overview: W.M. Berg is a U.S. manufacturer specializing in precision helical gears and custom power transmission components for industrial, aerospace, and motion control applications. The company’s product range includes high‑tolerance helical gears, gear racks, and complex machined assemblies engineered to stringent quality standards. Berg’s helical gears are designed to deliver smooth, quiet operation and high load‑carrying capacity in precision machinery, robotics, and automation systems. With state‑of‑the‑art manufacturing technologies and custom engineering support, W.M. Berg helps businesses achieve exact gear specifications and robust performance, making it a respected partner for OEMs and industrial designers worldwide.
9. Renold Plc
Main Products: Helical & bevel gears, custom precision gear solutions.
Overview: Renold Plc is a historic UK‑based manufacturer of industrial power transmission products, including helical and bevel gears, chains, and couplings engineered for demanding industrial environments. With roots dating back to the early 20th century, Renold combines traditional engineering expertise with modern manufacturing to deliver durable, high‑precision helical gear units for conveyors, heavy machinery, and material handling applications. The company’s gear products are valued for reliability, long service life, and ability to withstand harsh operating conditions. Supported by global service networks and technical support, Renold continues to serve leading industrial sectors across Europe, Asia, and the Americas.
10. Bharat Gears Ltd.
Main Products: Automotive and industrial helical gears, gearboxes, precision transmission parts.
Overview: Bharat Gears Ltd. (BGL) is one of India’s largest and most respected gear manufacturers, producing a wide range of helical gears, ring and pinion gears, transmission shafts, and differential components for automotive and industrial applications. Since its founding in 1971, BGL has expanded its manufacturing capabilities across multiple facilities and now supplies gear products to leading OEMs in sectors like commercial vehicles, agricultural machinery, and construction equipment. Known for precision gear engineering, robust production processes, and global exports, Bharat Gears also offers specialized heat‑treatment services and complex gear assemblies that meet stringent quality standards and performance requirements in international markets.
Sanmin Gears
Main Products: Bevel Gear, Spur Gear, Timing Belt Pulleys
Overview: Sanmin Gears is a professional Chinese manufacturer specializing in high-quality helical gears, spur gears, bevel gears, and precision gear solutions. With over 18 years of experience in gear design, production, and global export, Sanmin Gears provides reliable and eco-friendly power transmission products at competitive prices. The company offers custom helical gears and gear assemblies tailored to industrial automation, packaging machinery, 3D printers, and other mechanical applications. Equipped with advanced CNC machining, heat treatment, and quality control processes, Sanmin Gears ensures consistent precision, durability, and smooth performance. Trusted by clients worldwide, it delivers complete OEM/ODM services and versatile transmission solutions for diverse engineering needs.
Conclusion
Choosing the right helical gear manufacturers is crucial for ensuring precision, durability, and efficiency in your industrial applications. The companies listed above represent the global leaders in gear technology, offering high-quality solutions, advanced manufacturing capabilities, and reliable customer support.
Among them, Sanmin Gears stands out for its nearly two decades of experience, custom gear solutions, and commitment to delivering precise, eco-friendly, and long-lasting helical gears. Their advanced CNC machining and rigorous quality control ensure that every gear meets demanding industry standards.
Whether you need gears for automation, heavy machinery, or specialized equipment, partnering with top helical gear manufacturers can save time, reduce costs, and improve performance. Check and ask for a quote from Sanmin Gears today to secure tailored, high-quality gear solutions for your next project.
