Standard products - Hongqin Gearbox

Hongqin offers a comprehensive range of harmonic reducer products
designed for precision motion control in robotics, automation, and
industrial applications. Our standard harmonic reducer series —
including SF, HF, HD, SD, and CSF Mini — deliver high torque capacity,
exceptional positioning accuracy, and long service life. All products
are ISO 9001 certified and available for OEM/ODM customization.

SF-I

Compact and simple design
High torque capacity
High rigidity
Excellent positioning and rotational accuracy
Wave generator enables automatic self-alignment

SF-II

Compact and simple design
High torque capacity
High rigidity
Excellent positioning and rotational accuracy
Wave generator enables automatic self-alignment

HF

Compact and simple design
High torque capacity
High rigidity
Wave generator enables automatic self-alignment for easy use

HF-II

Compact and simple design
High torque capacity
High rigidity
Large-diameter hollow bore structure

HF-III

Compact and simple design
High torque capacity
High rigidity
Flat, integrated wave generator

HF-IV

Compact and simple design
High torque capacity
High rigidity
Coaxial input and output

HD

Ultra-Thin Design
Compact and simple structure
High torque capacity
High rigidity
Excellent positioning and rotational accuracy

SD

Compact and simple structure
Hollow design
High static torque capacity
Increased load capacity of the output-side bearing

CSF-MiNi

Compact and Lightweight Design
Simple and space-saving structure
Excellent positioning and rotational accuracy
Coaxial input and output

TDN

High-precision positioning
High torque output
Compact design
Optional hollow structure
Low backlash