FGH40K-500G-90G-NG/20P Heavy-Duty Encoder Replacement Solution

The FGH40K-500G-90G-NG/20P heavy-duty incremental encoder is a precision feedback device designed for use in steel production lines, rolling mills, and other high-demand industrial environments. As this model has become increasingly difficult to source from the market, we provide a customized 1:1 replacement solution that replicates all key mechanical and electrical parameters — including pulse count, shaft dimensions, mounting configuration, and output signal type. This ensures perfect compatibility with the original system and allows for direct installation without modification. Our optimized production process enables short delivery cycles, helping customers avoid downtime and maintain continuous equipment operation in critical production lines.

In industrial practice, the FGH40K-500G-90G-NG/20P is recognized for its reliability, accuracy, and robust structure, capable of withstanding severe working conditions such as vibration, temperature fluctuation, and dust contamination. It is commonly used in metallurgy and heavy machinery control systems where consistent feedback is essential for operational precision and process safety. Our replacement version maintains these performance standards while also offering flexibility for non-standard customization, such as alternative shaft sizes, connectors, or mechanical interfaces to match specific user applications. This adaptability ensures long-term reliability and performance continuity for heavy-duty equipment.

Our custom heavy-duty encoder replacement solutions have been successfully applied in industrial facilities across the Middle East, Russia, Southeast Asia, Indonesia, and South America. These installations confirm the dependability and global applicability of our encoder replacements, providing reliable operation and extended service life under the most demanding conditions.

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