Torque Engineering
- Torque Characteristics Starting torque: 150-300% rated. Pull-up torque: 60-80%. Breakdown torque: 200-300%. Rated torque: 85-95% max. Locked rotor torque: 150-250%.
- Speed-Torque Relations Constant power range: 2:1-4:1. Speed regulation: 1-3%. Torque ripple: <5%. Dynamic response: 10-50ms. Acceleration time: 0.5-2.0s.
- Load Dynamics Inertia ratio: 5:1-10:1. Friction coefficient: 0.001-0.003. Damping ratio: 0.7-1.0. Backlash: <1 arcmin. Stiffness: 10⁴-10⁶ Nm/rad.
Performance Parameters
- Operating Limits Temperature rise: 60-80°C. Duty cycle: S1-S9. Service factor: 1.0-1.25. Overload capacity: 150-200%. Protection class: IP54-IP65.
- Control Precision Torque accuracy: ±2-5%. Speed accuracy: ±0.01-0.1%. Position error: ±1-5 arcmin. Settling time: 50-200ms. Bandwidth: 100-500Hz.
- System Integration Coupling stiffness: 10⁴-10⁵ Nm/rad. Alignment tolerance: ±0.05mm. Mounting rigidity: >10× rated torque. Vibration level: <2.8mm/s. Balance grade: G2.5.
Application Design
- Selection Criteria Safety factor: 1.5-2.0. Peak duration: <1s. RMS torque: 60-80% rated. Acceleration reserve: 30-50%. Emergency stop: 250-300% rated.
- Environmental Factors Ambient temperature: -20 to +40°C. Altitude derating: -1%/100m. Humidity: 5-95%. Atmospheric pressure: 70-106kPa. Pollution degree: 2-3.
- Mechanical Interface Shaft tolerance: h6/k6. Key strength: 1.5× shaft. Bearing life: L10>20000h. Flange runout: <0.05mm. Surface finish: Ra 1.6-3.2.
Maintenance Requirements
- Monitoring Protocol Torque trending: continuous. Temperature monitoring: hourly. Vibration analysis: monthly. Current signature: weekly. Position feedback: real-time.
- Service Schedule Bearing inspection: 8000hrs. Encoder calibration: annual. Brake check: quarterly. Alignment verification: semi-annual. Lubrication: 2000-4000hrs.
- Performance Validation Load testing: annual. Insulation check: semi-annual. Dynamic balance: 2 years. Thermal imaging: quarterly. Efficiency verification: monthly.