We developed a custom solution for the FGH6KK-2500G-90G-NG-J/50P encoder, intended for heavy-duty shaft systems where direct hollow shaft mounting and reliable incremental speed feedback must remain stable under vibration, load fluctuation, and industrial interference. This configuration provides 2500 ppr output, dual terminal box structure, and integrates option J for reduced rotational frequency modulation, making it suitable for applications where signal stability is more important than simply increasing pulse density. It is not a general-purpose encoder. It is a shaft-mounted speed feedback solution where mounting quality and signal transmission determine whether the output remains usable. Typical production lead time: 30 working days.
Custom Solution Photos
Stable output depends on shaft fit, mounting rigidity, terminal integrity, and clean signal routing.
System Limits
- Shaft eccentricity → unstable pulse output
- EMC interference → signal distortion over distance
- Weak mounting rigidity → frequency fluctuation
The FGH6 platform is designed for harsh-duty speed feedback in restricted spaces where coupling-based installation is not a useful option. The encoder uses an optical measuring principle and supports 0°, 90°, reference pulse, and inverted signals. Option J reduces rotational frequency modulation through an optically adjusted pulse disk, which helps when the control loop is sensitive to jitter and uneven frequency behavior.
Installation and Wiring Constraints
- Use direct hollow shaft mounting (Ø50 mm H7)
- Avoid coupling-based installation and shaft misalignment
- Keep signal wiring separated from power cables
- Use shielded cables in harsh EMC environments
- Consider FOC transmission for long-distance or interference-critical routing
Failure boundary:
- Poor mounting → unstable output
- Poor shielding → distorted signal
- Long cable without EMC control → degraded transmission quality
Replacement and Interface Mapping
- Suitable for heavy-duty speed feedback in harsh environments
- Applicable where 2500 ppr incremental signal with low modulation is required
- Not suitable where installation precision or EMC control cannot be ensured
Key Data
- Model: FGH6KK-2500G-90G-NG-J/50P
- Type: Heavy-duty hollow shaft incremental encoder
- Shaft: Ø50 mm H7
- Pulse: 2500 ppr
- Output: A, B, N + inverted
- Option J: reduced modulation
- Voltage: 12–30 VDC
- Speed: ≤4000 rpm
- Protection: IP66
- Temperature: -25 to +85 °C
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