The FGHJ40KK-2048G-90G-NG/20P is a high-resolution heavy-duty incremental encoder designed for demanding industrial applications, including steel rolling mills, metallurgical automation, and heavy machinery control systems. As the original model is increasingly difficult to source, we offer a fully customized 1:1 replacement solution. Our encoder precisely matches the original in mechanical dimensions, pulse resolution, shaft configuration, and electrical output, ensuring seamless integration into existing systems. Built with reinforced components and high-quality materials, it delivers reliable performance in harsh industrial environments with vibration, high temperatures, and dust exposure. The production process is optimized for fast delivery, allowing customers to resolve sourcing challenges quickly and minimize operational downtime.
Our custom replacement solutions have been successfully implemented in multiple global regions, including South America, Southeast Asia, Indonesia, the Middle East, and Russia. These encoders provide reliable and accurate feedback for heavy-duty industrial equipment, helping customers maintain stable operation and extend the service life of existing installations. By offering precise 1:1 replacements with optional customization for connectors, shafts, and mounting options, we provide a dependable solution for metallurgical and steel industry operators facing procurement challenges.
Replacement solution reference image.


Incremental Encoder Specifications (FG(H)40 Series)
Construction type
- Solid shaft B5 (flange) or B35 (flange + foot)
- H = Hollow shaft
- HJ = Hollow shaft (isolated)
Series
[Series information not explicitly listed in the image]
Electrical connection
- R = Terminal strip in a terminal box / 12-pole round connector Bundy
- C = Cable outlet / FCC connector in a terminal box
- KK = Second terminal box (available output signals on request)
Pulses per rotation
- Square pulses: 500, 600, 1000, 1024, 1200, 1300, 2000, 2048, 2400, 2500, ...1 million
- Sinus signals: 500, 600, 1000, 1024, 1200, 1300, 2500
- Other pulse ratios on request
Signal output
- Basic version: 0°, 90°, each with inverted signals
- - = without reference pulse
- NG = Reference pulse with inverted signal
Additional options signal outputs (see p.11)
- 2F = Option 2F; B2 = Option B2
- B = Option B; B3 = Option B3
Overspeed switch (see p.11)
- - = without option S
- S = Option S
Shaft
| Type | Specification |
|---|---|
| with feather key/keyway | |
| Solid shaft | 16P = Ø 16 H7 mm (option H6) |
| 18P = Ø 18 H7 mm | |
| 20P = Ø 20 H7 mm | |
| Hollow shaft | 16PF = Ø 16 H7 mm |
| 18PF = Ø 18 H7 mm | |
| 20PF = Ø 20 H7 mm | |
| with clamping | |
| Hollow shaft | 16K = Ø 16 H7 mm |
| 25K = Ø 25 H7 mm |
