The FGHJ4S-1024G-90G-NG/20P is a precision incremental encoder widely used in industrial automation, mechanical transmission systems, and motion control fields. As the original model is no longer readily available, we offer a 1:1 customized replacement solution that perfectly matches the original unit’s specifications — including resolution, mechanical dimensions, connector type, and output configuration. Each replacement encoder is built with enhanced internal shielding and stainless-steel housings to ensure stability under vibration, temperature fluctuations, and heavy-duty environments. Our manufacturing process ensures consistent performance, precise signal output, and an average delivery time of just 10 working days, minimizing downtime for your equipment.
This replacement solution has been successfully exported to multiple regions such as South America, Southeast Asia, Indonesia, the Middle East, and Russia, where it has helped customers solve application and integration challenges in legacy automation systems. The design combines industrial reliability with modern electronic optimization, ensuring compatibility, durability, and long service life — making it an ideal retrofit option for existing systems using the FGHJ4S-1024G-90G-NG/20P encoder.
Replacement solution 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
| Type | 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 |
