Specifications 1. General Information Parameter Specification Product Family Lexium BCH (Compact High Dynamics) Catalog Number BCH1304N12A1C Description 400W Compact Servo Motor Motor Type Permanent Magnet Synchronous Motor (PMSM) Voltage Class 230 VAC Insulation Class Class F (155°C) Thermal Protection PTC Thermistor integrated Certifications CE, UL, RoHS, REACH 2. Electrical Ratings Parameter Specification Rated Power 400 W Rated Torque 1.27 Nm Peak Torque 3.82 Nm (300% overload) Rated Speed 3000 rpm Maximum Speed 6000 rpm Rated Current 2.8 A RMS Peak Current 8.4 A RMS Torque Constant (Kt) 0.45 Nm/A Back EMF Constant (Ke) 26.8 V/1000 rpm Winding Resistance 1.8 Ω (line-to-line @ 20°C) Winding Inductance 6.5 mH (line-to-line) Electrical Time Constant 3.6 ms Mechanical Time Constant 2.8 ms 3. Mechanical Specifications Parameter Specification Frame Size 40 mm flange Body Length 112 mm (excluding shaft) Shaft Diameter 8 mm with keyway Shaft Length 25 mm Keyway Dimensions 3 × 3 mm (ISO 2491) Rotor Inertia 0.175 × 10⁻⁴ kg·m² Weight 1.2 kg Maximum Radial Load 80 N (at shaft center) Maximum Axial Load 40 N Bearing Type Deep groove ball bearings Lubrication Pre-lubricated, maintenance-free 4. Feedback System Parameter Specification Encoder Type Single-turn Absolute Encoder Resolution 20-bit (1,048,576 steps/rev) Communication Protocol Hiperface DSL (digital) Accuracy ±40 arcsec Connector 8-pin M12 circular connector (A-coded) 5. Environmental & Protection Parameter Specification Protection Rating • IP65 (shaft seal) • IP54 (housing) Operating Temperature 0°C to +40°C (no derating) Storage Temperature -20°C to +80°C Max. Winding Temperature 155°C (Class F) Altitude ≤ 1000 m without derating Humidity ≤ 90% RH, non-condensing Vibration Resistance 5-2000 Hz, 50 m/s² (5.1 g) Shock Resistance 500 m/s² (51 g), 11 ms duration 6. Connectors & Options Parameter Specification Power/Feedback Connector 8-pin M12 (male) Brake Option Without brake (this model) Shaft Configuration Standard with keyway Sealing Lip seal on shaft (IP65) 7. Performance Characteristics Parameter Specification Torque/Speed Curve Constant torque to 3000 rpm Constant Power Range 3000-6000 rpm Maximum Torque 3.82 Nm (for 2 seconds) Torque Ripple < 1.5% Cogging Torque < 0.5% Shaft Runout < 0.025 mm 8. Dimensions Parameter Specification Flange Size 40 × 40 mm Pilot Diameter 30 mm Mounting Holes 4 × M4 threaded Bolt Circle 46 mm Overall Length 142 mm (with connector)