In retrofit and maintenance scenarios, encoder replacement is often constrained by existing mechanical tolerances and predefined control logic. For systems originally configured with AG661 26 – 466120000000, a customized replacement solution can be provided to maintain these constraints while ensuring stable and predictable position feedback.
The replacement encoder is designed as a multi-turn absolute encoder with an SSI interface using Gray code, allowing it to operate seamlessly with controllers already programmed for this communication standard. Absolute position data is delivered with 4096 counts per revolution and 4096 multi-turn revolutions, supporting precise motion tracking over extended travel ranges and across power cycles. The encoder operates on a DC 10–32 V supply and supports SSI clock frequencies up to 300 kHz, providing reliable data transmission in industrial motion systems. Mechanically, the design supports continuous shaft speeds up to 8000 rpm and is reinforced to withstand 100 g shock and 20 g vibration, ensuring consistent performance under dynamic operating conditions. The IP67-rated enclosure offers effective protection against dust ingress and moisture exposure.


This AG661 26 – 466120000000 replacement encoder is suitable for material handling equipment, lifting devices, automated transfer systems, and other applications where dependable absolute position feedback is required to maintain operational accuracy and safety.
Technical data
| Parameter | Value | Unit |
| Max. permissible speed | 6000 | rpm^-1 |
| Permissible angular acceleration of rotor | 10^5 | rad \cdot s^-2 |
| Moment of inertia of rotor | 45 | gcm^2 |
| Max. starting torque at 25°C | 1 | Ncm |
| Max. load on shaft | ||
| - With standard shaft | axial: 50 / radial: 200 | N |
| - With expanding shaft | axial: 10 / radial: 20 | N |
| Service life of ball bearings (at 10 N axial/radial load @ 3000 $rpm^{-1}$) | 25000 | h |
| Vibration, sinusoidal 100 Hz | 100 | ms^-2 |
| Radial impacts on the flange within 10 ms | 300 | ms^-2 |
| Protection | See option concerned | - |
| Relative humidity | 95 | % |
| Temperature range | See option concerned | - |
| Weight | approx. 0.4 | kg |
| Parameter | Value | Unit |
| Max. step frequency | 100 | kHz |
| Supply voltage | 10 ... 32 | V |
| Max. power consumption | 3.7 | W |
| Angular error | 10^-3 | rad |
| Pick-up code | Gray single-step | - |
| Transmitters | GaAlAs diodes | - |
| MTBF | 10^5 | h |

