The FGH6K-1200G-90G-NG-J/50P can be supported through a custom compatible encoder solution for equipment maintenance, retrofit execution, replacement work, and system upgrades. For applications that need to retain the original Ø50 hollow-shaft installation and terminal-box wiring concept, a project-specific compatible version can be developed with a standard production lead time of 30 working days.
Technical Overview of the FGH6K-1200G-90G-NG-J/50P Encoder
This model is a heavy-duty incremental encoder from the FGH(I) 6 platform, configured with a single terminal box and a Ø50 H7 hollow shaft. In the type code, 1200G defines the pulse count, while 90G / NG indicate a 90° pulse arrangement with inverted channels together with a reference pulse and inverted reference signal. The FGH(I) 6 series is designed for demanding industrial feedback tasks and supports 12–30 V DC supply, with optional 5 V DC versions depending on project requirements.
Compared with higher-resolution variants in the same mechanical family, the 1200 ppr configuration is better suited to installations where the control system does not require very fine pulse density but still depends on stable incremental feedback and consistent reference pulse behavior. This gives the model a different engineering position in retrofit work, especially on existing machinery with fixed evaluation electronics.


Industrial Integration Considerations
For this version, the first integration check is usually on the control side rather than the shaft side. A 1200 ppr configuration may be selected to remain compatible with existing counters, speed-monitoring circuits, or legacy controller inputs that are not optimized for higher pulse rates. During replacement planning, the receiving electronics should be reviewed for pulse acceptance, signal level requirements, shielding practice, and reference pulse handling so the compatible solution can be matched without unnecessary changes elsewhere in the machine.
Mechanically, the Ø50 hollow shaft remains the core fitment requirement. Bore tolerance, shaft condition, anti-rotation arrangement, and available installation depth should all be checked before release. Because this is a single terminal-box version, cable entry and maintenance access can be planned more directly than on dual-box variants, which may be helpful in enclosed drive assemblies or installations with limited service space.
Custom Compatible Encoder Solution
For the FGH6K-1200G-90G-NG-J/50P, a custom compatible encoder solution can be configured to match the original hollow-shaft interface, terminal-box arrangement, pulse count, and signal structure. The compatible design can be aligned with the Ø50 H7 shaft diameter, the required 1200 ppr feedback format, and the installed mounting logic so that mechanical adaptation and electrical rework are kept under control.
The model also includes the J coded configuration. In practical project work, that detail should be checked during engineering review and carried into the compatible solution correctly, because replacement success depends on preserving the original operating logic rather than only reproducing the basic mechanical size.
Lead Time and Custom Development
Typical production lead time: 30 working days.
Before production, the engineering review should confirm the hollow-shaft diameter, mounting arrangement, pulse requirement, signal format, supply voltage, controller input expectations, and field wiring conditions. The J-coded configuration should also be verified in advance so the custom compatible encoder solution can remain consistent with the installed machine setup.
Typical Technical Parameters
| Parameter | Specification |
|---|---|
| Encoder Type | Incremental encoder |
| Resolution | 1200 ppr |
| Output Type | Incremental output |
| Signal Format | 90° pulse channel with inverted signals, reference pulse with inverted signal |
| Supply Voltage | 12–30 V DC, optional 5 V DC |
| Connection Type | Terminal box connection |
| Electrical Arrangement | Single terminal box |
| Shaft Type | Hollow shaft |
| Shaft Diameter | Ø50 H7 |
| Mounting Style | Heavy-duty hollow-shaft industrial design |
| Protection Rating | Up to IP66 |
| Operating Temperature | -25 °C to +85 °C |
| Option Code | J option included |
| Application Orientation | Maintenance, retrofit, replacement, upgrade |

