Product Number:
TWR-010-120-1RCR
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 | 10 degrees / 0.17 rad |
|---|---|
| Radial Clearance | 0.04 in / 1.0 mm |
| Rotor Inertia | 0.89 oz-in² / 0.0000164 kg-m² |
| Total Mass | 2.88 oz / 82 g |
| Resistance @ 20°C | 6.0 ohms |
| Inductance @ 20°C | 6.0 mH |
| Electrical Time Constant | 1.0 msec |
| Motor Constant | 35 in-oz/√watt / 24 N-cm/√watt |
| Torque Constant | 86 in-oz/amp / 60 N-cm/amp |
| Back EMF | 1.2 V/rad/sec |
| Continuous Torque (100% Duty) | 120 in-oz / 84 N-cm |
| Continuous Power (100% Duty) | 12 watts |
| Continuous Current (100% Duty) | 1.4 amps |
| Peak Torque (10% Duty) | 360 in-oz / 252 N-cm |
| Peak Power (10% Duty) | 105 watts |
| Peak Current (10% Duty) | 4.2 amps |