The FGH40KK-1200G-90G-NG/20P is a heavy-duty incremental encoder commonly used in steel plants, rolling mills, and other high-demand industrial automation systems. As the original model has become difficult to source, we provide a fully customized 1:1 replacement solution that precisely matches the original in mechanical dimensions, shaft size, pulse resolution, and electrical output. This ensures seamless installation without any modification to existing systems. Our optimized production process allows for short delivery times, helping customers quickly overcome sourcing challenges and maintain uninterrupted production operations.
In practical industrial applications, the FGH40KK-1200G-90G-NG/20P is valued for its robust construction, high-precision feedback, and stability under harsh conditions such as vibration, temperature fluctuations, and dust exposure. Our replacement encoders retain these critical performance characteristics while offering flexibility for non-standard requirements, such as different connector types, cable orientations, or shaft configurations. This makes our solution suitable for a wide range of heavy-duty industrial automation environments, ensuring reliable long-term operation.
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
Eixo
Tipo | 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 |