Maintenance teams planning replacements for GM400 frequently review Siemens Encoder, Baumer Photoelectric Sensor and Baumer Eb360 Sc C S012 V4Gjn 13000N to prevent downtime, checking availability and compatibility with existing systems.
Baumer GM400 Rotary Encoder
The Baumer GM400 Rotary Encoder offers a Multiturn function, Optical sensing method, ΓΈ10 mm solid shaft shaft type, and Connector M23, 12-pin, Connector M12, 8-pin, Cable 1 m connection. Manufactured by Baumer under the Baumer Rotary Encoder category, this model belongs to the EAL580-B Series.

| Brand | Sick |
| Product Type | Rotary Encoders |
| Model Number | GM400 |
Baumer GM400 Rotary Encoder β Technical Specifications
| Specification | Value |
|---|---|
| Voltage supply | 10...30 VDC, 5 VDC Β±10 % |
| Reverse polarity protection | Yes (10..30 VDC) / No (5 VDC) |
| Consumption w/o load | β€50 mA (24 VDC), β€80 mA (5 VDC) |
| Interface | SSI, Incremental A 90Β° B (optional) |
| Function | Multiturn |
| Absolute accuracy | Β±0.025 Β° |
| Sensing method | Optical |
| Size (flange) | ΓΈ58 mm |
| Shaft type | ΓΈ10 mm solid shaft |
| Protection EN 60529 | IP 54 (without shaft seal), IP 65 (with shaft seal) |
| Operating speed | β€10000 rpm (mechanical), β€6000 rpm (electric) |
| Starting acceleration | β€1000 U/sΒ² |
| Starting torque | β€0.015 Nm (+25 Β°C, IP 54), β€0.03 Nm (+25 Β°C, IP 65) |
| Rotor moment of inertia | 20 gcmΒ² |
| Material | Housing: aluminium, Flange: aluminium |
| Operating temperature | -25...+85 Β°C, -40...+85 Β°C (optional) |
| Relative humidity | 95 % non-condensing |
| Resistance | EN 60068-2-6, Vibration Β±0.75 mm - 10-58 Hz, 10 g - 58-2000 Hz, EN 60068-2-27, Shock 200 g, 6 ms |
| Weight approx. | 400 g |
| Connection | Connector M23, 12-pin, Connector M12, 8-pin, Cable 1 m |
The GM400: Baumer Singleturn 14 bit Resolution Absolute Encoder delivers outstanding accuracy with a 14-bit singleturn resolution using optical sensing technology. It supports both SSI and optional Incremental A 90Β° B interfaces, offering compatibility with a wide range of control systems. The encoder operates with a flexible voltage supply of 10β¦30 VDC or 5 VDC Β±10%, and includes reverse polarity protection for the 10β¦30 VDC range. Precision is at the heart of this model, offering Β±0.025Β° absolute accuracy, making it suitable for applications where fine positioning matters. Durability is ensured with an IP65 protection rating (with shaft seal), allowing it to perform reliably in dusty and mildly wet environments. The housing and flange are made of lightweight aluminium, balancing strength and heat dissipation. The solid ΓΈ10 mm shaft integrates smoothly into industrial machinery, while the mechanical speed of β€10000 rpm and electrical speed of β€6000 rpm ensure stable operation under dynamic conditions. This encoder is resistant to vibrations up to 10 g and shocks up to 200 g, as per EN 60068 standards. Connection options include M23 12-pin, M12 8-pin, and 1 m cable, giving integrators flexibility in mounting and wiring.
The Baumer GM400 is widely used in industrial automation, CNC machinery, servo motor feedback systems, and rotary indexing tablesβwhere precise angular positioning is critical. Engineers prefer this model for its high-resolution feedback and compatibility with SSI or incremental systems, especially when accuracy and speed must go hand-in-hand. It is particularly effective in robotic joints, automated assembly lines, and packaging machinery where fast cycle times and reliable encoder signals are essential. For maintenance teams, the encoderβs rugged build, low power consumption, and flexible voltage options make it a low-maintenance, long-life component. Whether upgrading legacy systems or designing new automation setups, the GM400 offers precision, speed, and robustness in a single package.




