Overview
The AMCI DuraCoder DC25F-B1C2KS is a 2.5″ resolver-based rotary shaft encoder designed for heavy-duty industrial applications. AMCI’s DuraCoder rotary shaft encoders are resolver-based, providing the heaviest duty 2.5″ rotary shaft encoder available, making it ideal for mill-duty, earthmoving equipment, and demanding factory automation environments. This absolute single-turn encoder assigns a unique position value to each measured increment, eliminating the need for homing sequences after power loss.
Key Features
- The AMCI DuraCoder product line boasts up to an IP67 rating, protecting against dust and immersion in harsh industrial settings
- Solid shaft and blind shaft versions are available, and both types incorporate an oversized double row bearing that supports shaft loads up to 100 lbs. radial / 50 lbs. axial
- The non-contact sensor design is superior because it does not rely on sensitive optics or plastic gears
- Flange-mount configuration for direct coupling to motor shafts and drive systems
- Field-programmable for multiple count-per-turn settings, minimizing inventory complexity
Technical Specifications
The DC25F-B1C2KS variant features absolute digital output with high repeatability and resolution suitable for process control and motion feedback applications. The resolver-based architecture provides non-contact sensing and exceptional reliability in contaminated environments where optical encoders fail.
Typical Applications
- Mill and quarrying equipment position feedback
- Closed-loop process control for dampers, valves, and sorters
- Angular measurement and shaft position sensing
- Material handling and conveyor speed control
- OEM machine retrofit and modernization projects
Compatibility & Replacements
Compatible With
- PLC systems with analog input modules (voltage or current input cards)
- Industrial control systems accepting resolver signals
- Standard 24 VDC industrial power supplies
- Flange-mount mechanical interfaces (standard mill motor adapters)
Replaces / Drop-In Replacement For
- Legacy AMCI DC25 series encoders
- Other 2.5″ flange-mount rotary shaft encoders with compatible pinouts
- Verify mechanical and electrical compatibility with your system integrator before ordering
Works With
- Allen-Bradley CompactLogix, ControlLogix (with analog input modules)
- Siemens S7-1200, S7-1500 (analog input cards)
- Mitsubishi FX series, Q series PLCs
- Omron CP1L, NX series controllers
- Any PLC or industrial controller with 4–20 mA or 0–10 VDC input capability




