Product Number:
TWR-008-150-1RC
Product Overview
Rotary voice coil actuators (RVCAs) are precision limited-angle motors designed for applications requiring smooth, high-acceleration angular motion (typically under 60°). Built with an arc-segmented multipole permanent magnet stator and a low-inertia moving coil rotor, these actuators require no commutation and produce zero cogging or torque ripple. The result is exceptionally smooth, backlash-free motion with a linear torque-to-current relationship that simplifies servo control integration.
To determine your motion profile needs, use our rotary motion calculator.
Specifications
| Continuous Torque Range | 8.0 degrees / 0.14 rad |
|---|---|
| Radial Clearance | 0.02 in / 0.50 mm |
| Rotor Inertia | 0.32 oz-in² / 0.0000059 kg-m² |
| Total Mass | 0.7 oz / 310 g |
| Resistance @ 20°C | 3.5 ohms |
| Inductance @ 20°C | 1.3 mH |
| Electrical Time Constant | 0.37 msec |
| Motor Constant | 47 in-oz/√watt / 34 N-cm/√watt |
| Torque Constant | 88 in-oz/amp / 62 N-cm/amp |
| Back EMF | 0.065 V/rpm / 0.62 V/rad/sec |
| Continuous Torque (100% Duty) | 150 in-oz / 106 N-cm |
| Continuous Power (100% Duty) | 10 watts |
| Continuous Current (100% Duty) | 1.7 amps |
| Peak Torque (10% Duty) | 450 in-oz / 318 N-cm |
| Peak Power (10% Duty) | 90 watts |
| Peak Current (10% Duty) | 5.1 amps |