Dynapar G0555026 RI58-O/2500EK.72RA-D0 Precision Incremental Rotary Encoder

The Dynapar G0555026 (Hengstler RI58-O/2500EK.72RA-D0) is a precision incremental rotary encoder engineered for demanding industrial motion control applications. With 2500 pulses per revolution and ABZ quadrature output, this 58 mm aluminum-housed encoder delivers high signal accuracy and supports response frequencies up to 300 kHz, making it suitable for real-time feedback in CNC systems, servo drives, and high-speed machinery. Operating across a 5–30 V DC supply with current consumption under 150 mA, the encoder supports multiple output formats including TTL, HTL, and RS422 (long-line drive) options for flexible system integration. Mechanically rated for 12,000 rpm maximum shaft speed, this encoder accommodates solid shafts from 5–14 mm diameter and features IP64/IP67 protection for reliable operation in harsh manufacturing environments. The unit offers multiple flange mounting configurations—including clamping flange, synchro flange, and square flange options—with M3 or M4 threaded mounting for secure fixture-level attachment. Standard applications include CNC machine tools, servo motors, elevators, door mechanisms, and packaging/injection molding equipment. Operating temperature ranges from ?25°C to +85°C (RI58-O variant), with extended-temperature RI58-T models available to +100°C. Documentation - [Technical Datasheet – RI58-O/RI58-T Series](https://www.dynapar.com/downloads/product_datasheets/ri58-o-ri58-t-incremental-encoder-datasheet.pdf) - [Installation and Mounting Guide](https://www.dynapar.com/downloads/product_manuals/ri58-installation-guide.pdf) - [Encoder Mounting Bracket Specifications (58 mm Face Mount)](https://www.dynapar.com/downloads/mounting-accessories/l-mounting-bracket-58mm-face-mount.pdf) - [RI58 Series Product Family Overview](https://www.dynapar.com/products/rotary-encoders/incremental-encoders/ri58-series/)