FGH40K-4000G-90G-NG/20P Heavy-Duty Encoder Replacement Solution

The FGH40K-4000G-90G-NG/20P is a heavy-duty incremental encoder engineered for precise feedback control in metallurgy, steel rolling, and heavy machinery systems. As the original model becomes increasingly difficult to source from the market, we provide a fully customized 1:1 replacement solution. Our alternative encoder is developed with the same mechanical and electrical specifications — including shaft dimensions, mounting interface, pulse resolution, and signal output — ensuring complete compatibility with the original installation. This replacement option helps customers solve procurement challenges and avoid long lead times, ensuring continuous and stable equipment operation with minimal downtime.

In demanding industrial environments, the FGH40K-4000G-90G-NG/20P has proven its reliability and precision, offering stable incremental feedback even under high temperatures, vibrations, and dust exposure. These characteristics make it ideal for continuous processes in steel mills, conveyor drives, and automation systems that require high accuracy and durability. Our replacement model not only preserves these technical advantages but also offers optional customization, such as alternative electrical connectors, cable orientations, and mechanical interfaces. This flexibility allows for seamless adaptation across different machine configurations while maintaining long-term operational stability.

Our heavy-duty encoder replacement solutions have been successfully implemented in key industrial regions including the Middle East, Russia, Southeast Asia, Indonesia, and South America. These real-world applications confirm the high dependability and compatibility of our customized encoders, ensuring they perform as reliable alternatives to hard-to-find original models.

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