ROMO series piezo rotary motor with a plain hollow shaft and magnetic encoder.
Piezo Motor Company’s new range of miniature piezomotors sets new benchmarks for compact, high-performance rotary and linear piezoelectric actuators/motors. We’ve combined lightweight design with superior precision and functionality.
These piezomotors are exceptionally energy-efficient, requiring no power in the hold position while still maintaining full torque and force. This efficiency makes them ideal for demanding OEM applications where performance and cost-effectiveness are paramount.
Designed to operate at low voltage (5.0 VDC to 7.5 VDC) and small currents (e.g., 30 mA), the new PMC piezomotors are available with optional factory-installed encoders and boast several distinctive features:
| Part No. | ROMO-011-1370 | 
| Power Supply | 5,0 to 7,5 V DC | 
| Stall Torque | ≥ 4 mNm | 
| Self Braking Torque | ≥ 5 mNm | 
| Actuator Response Time | » 30 µs | 
| Max Speed | > 600 rpm | 
| Minimum Angular Step | » 30 µrad | 
| Encoder Resolution (after quadrature) | 1024 ppr | 
| Minimum Controlled Angular Step* | 6.1 mrad | 
| Uni-directional Repeatability* | 6.1 mrad | 
| Angular Backlash | 30 µrad | 
| Angular Hysteresis | 30 µrad | 
| Frequency Response | 4 kHz | 
| Operating Temperature | -20 °C to 80 °C | 
| Maximum Axial Load | 200 g | 
| Maximum Radial Load | 200 g | 
| Moment of Inertia | 29.2 g·mm² | 
| Max Current over velocity range | 300 mA | 
| Rotor Runout | ≤ 50 µm | 
| Actuator Weight | 4.0 g | 
| Actuator Dimensions (no shaft) | 13 x 18.7 x 9.1 mm | 
ROMO-E brochure (PDF)
ROMO-E manual (PDF)
ROMO-E manual closed loop (PDF)
 
	Piezo Driver (Blue PCB) closed loop for ROMO-E