The FGH40K-1024G-90G-NG/20P is a heavy-duty incremental encoder designed for high-performance feedback control in steel mills, rolling lines, and heavy industrial automation systems. As the original model becomes increasingly hard to source, we provide a fully customized 1:1 replacement solution with identical electrical and mechanical parameters. This includes the same pulse count, shaft diameter, and output configuration, ensuring perfect compatibility with existing installations. Our replacement option helps customers overcome long delivery times and sourcing difficulties while maintaining operational continuity. With an optimized production process, we offer a short manufacturing cycle to meet urgent industrial needs efficiently.
This encoder is well-regarded for its robustness, precision, and ability to perform in challenging environments characterized by vibration, temperature fluctuations, and dust exposure. Its stable signal output and mechanical strength make it an essential component in metallurgical and steel production systems. Our replacement model retains all the advantages of the original while offering additional flexibility, such as different connector types or mechanical interfaces. It ensures reliable feedback for control systems in continuous operation, helping to maintain the accuracy and efficiency required in critical industrial applications.
Our heavy-duty encoder replacement solutions have been successfully applied in projects across the Middle East, Russia, Southeast Asia, Indonesia, and South America. The proven reliability and precision of these encoders demonstrate their capability to replace legacy models seamlessly in a wide range of global industries.
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 |