When replacing an encoder specified as AG661 18 – 466118000000, a customized solution can be engineered to preserve both functional performance and installation compatibility. Rather than offering a generic substitute, this replacement is developed around the original application requirements, ensuring that mechanical interfaces, electrical characteristics, and communication behavior remain aligned with the existing system.
Technically, the replacement unit is a multi-turn absolute encoder with SSI (Gray code) output, designed for controllers that rely on deterministic serial position feedback. The encoder delivers a total resolution of 4096 counts per revolution combined with 4096 multi-turn revolutions, enabling accurate absolute positioning even after power cycles. A wide DC 10–32 V operating voltage supports stable use across different industrial power standards, while a maximum SSI clock frequency of 300 kHz ensures timely data transmission. The mechanical design supports shaft speeds up to 8000 rpm and incorporates structural reinforcement to withstand 100 g shock and 20 g vibration, contributing to consistent performance under dynamic load conditions. With an IP67-rated enclosure, the encoder is protected against dust ingress and temporary water exposure.


As a result, the AG661 18 – 466118000000 replacement encoder is well suited for automated handling systems, lifting platforms, transfer mechanisms, and similar machinery where reliable absolute position information is essential for operational safety and positioning accuracy.
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 |

