FGH40KK-2000G-90G-NG/20P Heavy-Duty Incremental Encoder Custom Replacement

The FGH40KK-2000G-90G-NG/20P is a heavy-duty incremental encoder widely applied in metallurgical automation systems, rolling mills, and other steel industry machinery. Due to its high precision and robust mechanical design, it plays a critical role in speed monitoring, motor feedback, and position control under harsh industrial environments. As sourcing the original model has become increasingly difficult, we provide a 1:1 custom replacement encoder designed to perfectly match the original specifications. The design replicates the same shaft dimensions, mounting pattern, and electrical interface, making installation and commissioning simple and efficient. Our manufacturing process ensures that customers receive high-quality, compatible products with a significantly shorter lead time, enabling a smooth transition from the obsolete model to the new one.

Our replacement solution has been successfully deployed in multiple global markets, including South America, Southeast Asia, Indonesia, the Middle East, and Russia. Clients in these regions have adopted our customized encoders to maintain equipment performance, extend the life of existing installations, and eliminate long procurement delays. With superior resistance to vibration, dust, and temperature variations, our encoders continue to operate reliably even in the toughest working environments, helping industrial users sustain consistent production quality and operational safety.

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