Helical Gear for Precision Engineering and Efficient Power Transmission

Helical gears are the workhorse of industrial power transmission where smoothness and load capacity matter more than simplicity. Their angled teeth engage gradually—unlike the abrupt full-width contact of spur gears—resulting in significantly lower noise and vibration. This makes helical gears the standard choice for gearboxes driving pumps, compressors, conveyors, and rolling mills where operational quietness and extended bearing life are valued.

The trade-off is axial thrust: the helix angle generates a force component along the shaft axis, which must be managed through proper bearing selection or double-helix (herringbone) configurations. Hanwei's engineering team provides guidance on thrust management as part of every gear quotation.

We manufacture helical gears from small precision units to large drives up to 5 m pitch diameter, with modules to 50 and helix angles tailored to your application. Our grinding machines—2.5 m Höfler and 5 m NILES—produce DIN Grade 6 helical tooth profiles with precise lead correction, ensuring the contact pattern falls exactly where the design intends.

For high-power applications, we offer double-helical (herringbone) gears that cancel axial thrust internally, simplifying the bearing arrangement. These are particularly common in steel mill drives and marine propulsion systems.

Material and heat treatment options span the full spectrum: through-hardened alloy steel for general service, case-carburized grades for maximum surface durability, and nitrided steels for applications requiring high surface hardness with minimal distortion. Our national "Little Giant" certification and 30+ country export record back every gear we ship. Send your helical gear requirements for a technical evaluation and quotation.