| Primary brand | Mitsubishi Electric |
| Main function | AC servo motor |
| Product series / family name | MELSERVO J2S series |
| Sub-range name | HC-RF series |
| Functions | AC brushless rotary servo motor |
| Design | straight shaftbuilt-in absolute feedback encod. (17-bit)oil sealultra-low inertia / medium power capacity |
| Supply voltage (AC) | 200Vac class |
| Rated current | 28A |
| Rated active power (kW) | 5000W / 5kW |
| Rotational speed | 3000rpm4500rpm (maximum) |
| Torque | 15.9Nm nominal |
| Maximum torque | 39.7Nm |
| Moment of inertia | 0.0012kg.m2 (12kg.cm2) |
| Net Height (mm) | 185 mm |
| Net Width (mm) | 130 mm |
| Net Depth (mm) | 337 mm |
| Mounting mode | 130x130mm flange mounting |
| Resolution | 17-bit (equivalent to 131072ppr) feedback |
| Degree of protection | IP65 |
| Dimensions | H185mm x W130mm x D337mm |
| Ambient air temperature for operation | 0…+40 °C |
| Ambient air temperature for storage | -15°C…+70 °C |
| Maximum current | 70 A |
| Order code / Manufacturer SKU | HC-RFS503 |
| Manufacturer product status | Discontinued |
