The ASS4K-12 encoder, once a well-recognized industrial model, has become increasingly difficult to obtain in the current market. For companies still using equipment based on this encoder, the lack of supply creates serious maintenance and procurement challenges. To address these issues, we provide a 1:1 customized replacement solution developed to fully match the parameters and performance of the original ASS4K-12. Our engineering team ensures that the replacement encoder can be directly installed and operate identically to the original, maintaining the same electrical interface, mounting dimensions, and output characteristics. In addition, our optimized manufacturing process shortens production lead time, helping customers resume normal operation quickly.
Our customized replacement encoders for the ASS4K-12 model have already been successfully implemented in multiple regions around the world, including the Middle East, Russia, Southeast Asia, Indonesia, and South America. These areas represent key industrial zones where steel production, mining, and heavy manufacturing play a vital role. Feedback from our international clients confirms that our replacement solution provides reliable long-term performance, even in environments with high temperature, vibration, and dust exposure. The global adoption of this solution demonstrates its reliability and adaptability in meeting diverse customer requirements across different industries and working conditions.
Replacement solution reference image.
Technical data
1. Connection data
| Parameter | Details |
|---|---|
| Supply voltage | 12…30 V DC |
| No-load power consumption | approx. 1 W |
| Resolution singleturn | Max. 16 bit (65536 steps per revolution) see type plate |
| Resolution multiturn | 12 bit (4096 revolutions) see type plate |
| Data format | SSI, binary/gray code (see type plate) |
2. SSI-Interface
| Parameter | Details |
|---|---|
| Clock input | RS 422 / 5V |
| Input current | 5 mA |
| Clock frequency | 80kHz…1 MHz |
| Clock rate/transmission | 25 / 13 (multiturn / singleturn) |
| SSI-time out | > 30 μs (without data repetition) < 20 μs (with data repetition) |
| Data interface | RS 422 / 5V |
3. Control signals
| Parameter | Details |
|---|---|
| V/IR, Z (input) | 5…30V / 5mA |
| State (output) | HTL |
| Temperature range | -25°C…+85°C; For UL and CSA -25°C…+70°C |
4. Degree of protection according to DIN EN 60529
| Degree of protection | Sealing | Mech. permissable speed | Rotor moment of inertia | Breakaway torque |
|---|---|---|---|---|
| IP 66 | with Labyrinth seal | ≤6000 rpm | approx. 580 gcm² | approx. 6 Nm |
| IP 66 / IP 67 | with axial shaft seal | ≤4000 rpm | approx. 510 gcm² | approx. 8 Nm |
| IP 66 / IP 67 | With radial shaft seal (for special applications, e.g. wet areas in rolling mills) | ≤3000 rpm | approx. 510 gcm² | approx. 9 Nm |
5. Vibration resistance, shock resistance and shaft load
| Parameter | Standard | Value |
|---|---|---|
| Vibration resistance | DIN EN 60068-2-6 / IEC 68-2-6 (10 … 2000 Hz) | 20 g (=200 m/s²) |
| Shock resistance | DIN EN 60068-2-27 / IEC 68-2-27 (6 ms) | 150 g (=1500 m/s²) |
| Max. encoder shaft load | - | Fₐ, max. (axial) = 100 N; Fᵣ, max. (radial) = 120 N |
6. Shaft dimensions
| Parameter | Details |
|---|---|
| Shaft dimensions | 11j6 x 30 mm (standard); 14j6 x 30 mm (optional) |
7. Weight
| Parameter | Type | Details |
|---|---|---|
| Weight | Type K (construction type B5) | approx. 3.1 kg |
