Why Choose Hengxiang? What Makes Hengxiang Encoders Stand Out?

In precision motion control, the reliability of an encoder directly determines a machine’s accuracy and service life. Shanghai Hengxiang Optical Electronics Co., Ltd. — a high-tech enterprise established in 2001 with over two decades of experience in optoelectronic encoders — offers a reliable answer built on sustained R&D and a solid foundation in optical technology.

1. Rooted in Optics, Expert in Optoelectronics

Hengxiang‘s story goes back to 1985. Its predecessor, Wenzhou Optical Instrument Factory, had accumulated over 16 years of expertise in precision optical cold-working. Before Hengxiang ever built an encoder, it had already mastered the art of “controlling light.” The most critical component of any encoder—the grating code disc—is itself a precision optical element. Every code disc used in Hengxiang encoders is independently designed, manufactured, and produced in-house, using photoelectric sensing principles—one of the most accurate methods available in the encoder industry.

This unique combination of optical and encoding expertise gives Hengxiang‘s products outstanding signal stability, noise immunity, and vibration resistance, achieving industry-leading precision. In 2002, Hengxiang partnered with the Shanghai Institute of Technical Physics to overcome key technical challenges in infrared optics and encoder technology. That same year, the independently developed S25 series encoder was successfully launched.

2. Innovation-Driven, Solving Industry Challenges

Hengxiang’s core competitiveness lies in continuous technological innovation. The company holds a robust intellectual property portfolio: 55 patents in total, including an invention patent for a Compact Bearingless Absolute Encoder (granted June 2025) that addresses the long-standing issue of encoder damage caused by vibration-induced bolt loosening and mechanical impact.

Take the ZM35 Multi-turn Absolute Bearing-less Encoder, launched in 2025: with an outer diameter of just 35mm, a thickness of 11.8mm, and a weight of only 80g, it delivers ±80″ accuracy, single-turn resolution of 24 Bits (expandable to 32 Bits), and up to 24 Bits of multi-turn data retention with power-off memory. Its stainless steel shaft and aluminum alloy housing ensure durability, while BiSS_C/SSI interface support provides seamless system integration.

Another key product, the WSN49 Series Bearingless Magnetic Encoder, features an off-axis bearingless design that delivers three key advantages: maintenance-free operation, easy installation, and space savings. It achieves a maximum error of just ±0.3°, resolution up to 8192 PPR, and supports speeds up to 18,000 rpm. With IP67 protection and a wide operating temperature range of -40°C to +100°C, it is built to perform reliably in dusty, humid, and vibration-prone environments.

3. Comprehensive Product Portfolio, Broad Industry Coverage

Hengxiang offers over 10 series and more than 100 encoder specifications. The product line covers incremental encoders, absolute encoders, sine-cosine encoders, magnetic encoders, and more — serving industries such as CNC machine tools, medical equipment, elevators, robotics, wind power generation, textile machinery, packaging equipment, and beyond. The company supports OEM and ODM services, with customized encoder solutions available to meet specific application requirements.

4. Quality Assurance and Certifications

Hengxiang holds ISO9001 quality management certification and has been recognized as a High-Tech Enterprise, a Technology-Based SME, and a provincial “Specialized, Refined, Distinctive, and Innovative” (专精特新) Enterprise in China. High-quality components — including imported ICs — ensure strong noise immunity, stable signal output, and reliable performance without pulse loss. Products are exported worldwide and have earned broad recognition from customers across industries.

In Summary: Why Choose Hengxiang?

Over two decades of encoder expertise, grounded in optical technology dating back to 1985. 55 patents as a testament to innovation. Over 10 series and 100+ specifications to meet diverse needs. ISO9001 certification as a guarantee of quality. Whether you need standard products or custom-engineered solutions, Hengxiang delivers high-precision, high-reliability, and cost-effective encoder solutions.