The FGH40KK-4096G-90G-NG/20P is a heavy-duty incremental encoder widely used in steel mills, rolling lines, and other demanding industrial environments. As the original model becomes increasingly difficult to source, we provide a fully customized 1:1 replacement solution. Our design precisely replicates the original encoder’s mechanical dimensions, electrical interface, and pulse resolution, ensuring seamless installation without system modifications. With a streamlined production process, we are able to deliver replacement units quickly, helping customers overcome procurement challenges and maintain uninterrupted operation in critical industrial applications.
In application, the FGH40KK-4096G-90G-NG/20P is valued for its robust construction, high-precision feedback, and reliability under harsh conditions such as vibration, dust, and high temperatures. Our replacement encoders preserve these essential features while allowing for flexible customization options, including alternative shafts, connectors, and mounting interfaces. This ensures that heavy-duty machinery, rolling mills, and automation systems continue to operate accurately and efficiently. The replacement solution has been successfully applied across regions such as the Middle East, Russia, Southeast Asia, Indonesia, and South America, demonstrating its global reliability and adaptability.
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 |
