> Harmonic Reducer Harmonic Reducer
Laifual harmonic reducers deliver 99% performance matching to standard industry systems. Built on the three part architecture of wave generator, flex spline and circular spline, our specialized series push the limits: the High Torque G Series increases capacity by 30%, while the Lightweight N Series reduces weight by over 20%. Zero backlash and extended service life across humanoid robotics, aerospace, and industrial automation applications.
High Performance Strain Wave Gears
Laifual harmonic reducers deliver high precision in a compact size. Low starting torque. Minimal temperature rise. Long service life under heavy loads. Backed by 10+ years of R&D, we provide high reliability transmission solutions for advanced automation. Size range covers 3 to 58. Reduction ratios from 30:1 to 160:1. Every unit undergoes full inspection before shipment with ISO 9001 and IATF 16949 certified manufacturing.
FS Series — Cup Type
FS cup type features a flexspline with external gear teeth in the shape of a cup. The highest torque to weight ratio in the lineup, ideal for enclosed joints. Available options include standard, high torque G Series, ultra flat and FSN lightweight. Through structural optimization and advanced material engineering, the FSN variant achieves significant weight reduction without compromising torque output, stiffness or transmission accuracy. High power density. Low moment of inertia for faster acceleration response.
FH Series — Hollow Shaft Type
The FH Series with large central hollow shaft allows cables, air lines or laser beams to pass directly through the gear center, simplifying wiring in complex multi axis robots. Designed to be 20% lighter than standard models in the FHN configuration while maintaining full durability and functionality. Through hole design with the same precision as enclosed types.
FB Series — Double Circular Spline Type
Double circular spline design for enhanced rigidity and torque capacity. The FHD I model reduces axial length by 50% compared to conventional designs, while the FHD III achieves a 15% reduction, all without compromising performance. Fits precision machinery and automation systems that need space saving, high torque harmonic reduction.
Mini Hat Type
Mini hat type features a brim resembling a silk hat, providing a perfect mounting surface and a large through hole in an ultra compact form factor. Designed for desktop robots, precision instruments, and space constrained applications where every millimeter counts.
Getting Started with Laifual
Whether you are replacing an existing reducer, designing a new robot joint, or exploring harmonic drive for the first time, we make the process straightforward. This section covers how to select the right unit, what to expect from quality and warranty, and how to request custom modifications. Every project starts with a conversation with our engineering team.
How to Select a Harmonic Reducer?
Tell us about your project and we will recommend the right unit.
Application
What are you driving? Industrial robot arm, collaborative robot joint, CNC spindle, medical scanner. The application determines which series we start with.
Torque and Ratio
Give us your continuous torque and peak torque, including acceleration and emergency stop loads. Reduction ratios from 30:1 to 160:1 available.
Size and Stiffness
Enclosed joint: FS cup type, highest torque to weight ratio. Need cables or optics through the center: FH hollow shaft. Tightest axial space: FB double circular spline, cuts length by up to 50%.
Operating Environment
Standard grease for factory automation. Low outgassing grease for vacuum and semiconductor. Wide temperature range lubricants for aerospace and outdoor.
Send us these specs and our engineers will recommend the right unit.
Every harmonic reducer ships fully inspected and tested. 12 month warranty from delivery date or 2,000 operating hours, whichever comes first. Covers defects in materials and workmanship under normal use and maintenance. ISO 9001 and IATF 16949 certified production lines.
Customization and OEM Services
As a direct manufacturer, Laifual Drive goes beyond standard catalog models. We offer OEM and ODM services to fit your design requirements.
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Custom Shafts and Flanges Modified dimensions for seamless integration with your existing mechanical design.
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Special Lubrication: High temperature grease, low temperature grease, or vacuum compatible options.
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Reinforced Components: Enhanced materials for extreme load conditions and extended service life.
Need a non standard configuration? Contact our engineering team .
Request a Quote
Frequently Asked Questions
Start Your Project
Tell us your torque, speed and mounting requirements. Response within 24 hours.