FGH4K-2048G-90G-NG/20P Heavy-Duty Encoder Replacement Solution

The FGH4K-2048G-90G-NG/20P heavy-duty incremental encoder has long been used in demanding industrial environments, especially in metallurgy and steel production lines where precision and durability are crucial. With the original version now increasingly difficult to obtain, we provide a reliable custom replacement solution based on a 1:1 parameter design. Our engineering team ensures complete compatibility in electrical characteristics, mechanical dimensions, pulse resolution, and output interface. This makes our version a direct drop-in replacement for existing systems, helping users avoid the need for mechanical or electrical modifications. In addition, our optimized production process allows us to maintain a short delivery time, minimizing downtime and ensuring continuity in industrial operations.

In practical applications, the FGH4K-2048G-90G-NG/20P is known for its stable signal output and strong resistance to vibration, temperature variation, and electromagnetic interference. These features make it ideal for feedback control in rolling mills, cranes, and drive systems within heavy-duty environments. Its rugged construction allows it to withstand continuous operation and heavy mechanical stress, which is critical for the high-load cycles typical in the metallurgical sector. Our custom version retains these advantages, while incorporating flexible customization options for mounting, shaft diameter, and connector interface to match user-specific requirements.

Our replacement solutions for this model have already been successfully implemented across the Middle East, Russia, Southeast Asia, Indonesia, and South America. These deployments confirm the reliability and global adaptability of our heavy-duty encoder solutions, providing customers with a trusted alternative for hard-to-source industrial encoder models.

Replacement solution reference image.

Incremental Encoder Specifications (FG(H)4 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