VARS0008 Micro Size Rotary Voice Coil Motor Fast Response Zero Backlash 26deg

Product Overview

The VARS0008-026-00A rotary voice coil motor is a swing-type voice coil actuator developed by SUPT MOTION for precision angle-limited positioning. At 25 °C, it has a total stroke of 26 degrees, a peak torque of 0.08 N·m, a continuous torque of 0.05 N·m, and a maximum drive voltage of 6.4 V.
Weighing only 11.7 grams, with overall dimensions of 35 × 39.8 × 36.1 millimeters, it is one of the most compact rotary actuators in the VARS series. Because the coil moves directly within the magnetic field—eliminating the need for gears, belts, or brushes—this rotary voice coil motor responds almost instantaneously to drive current and operates without backlash.
This miniature design is suitable for applications where traditional servo motors cannot be installed, such as optical modules, mirror positioning, and micro-valve systems. The actuator has a rated service life of 10,000 hours and requires no lubrication or periodic maintenance.

Solution

Traditional rotary motion components—such as geared DC motors and stepper motors—suffer from issues like backlash, cogging torque, friction, and slow response, which limit their positioning accuracy and dynamic performance in high-frequency applications. The VARS0008-026-00A addresses these issues by employing a direct-drive oscillating voice coil architecture.
The output torque is proportional to the drive current, enabling linear and repeatable force control; meanwhile, the extremely low moving mass ensures high acceleration and millisecond-level response times. With no mechanical transmission components, zero backlash and zero cogging torque are inherent characteristics of this design, and the final position resolution is limited only by the feedback sensor. The motor is capable of high-frequency, continuous bidirectional oscillation, making it suitable for jittering, scanning, and active damping tasks.
Its compact housing simplifies integration into space-constrained products, while the low-inductance coil allows the drive electronics to rapidly modulate the current, resulting in smooth, vibration-free motion. Consequently, engineers can build a high-precision, high-dynamic-range positioning loop using only a simple current amplifier and a position sensor. Compared to traditional motor-and-gear combinations, this solution reduces system costs, shortens development time, and improves reliability.

Specifications

Application

Typical applications include mirror position actuators for laser technologies, optical scanning and beam steering systems, rotary valve and damping actuators, rotary positioning tables and flight control actuators. The motor is widely used in the semiconductor, automotive, industrial and aerospace industries, as well as in medical instruments and laboratory automation. Its micro size and fast response make it an excellent choice for miniature camera gimbal stabilization, optical switch positioning, print head adjustment and any mechanism that requires rapid, backlash-free angular motion in a small envelope. Custom stroke, drive voltage and mounting dimensions are available for OEM projects.

FAQ

Q1: What is the total stroke of this rotary voice coil motor?

The VARS0008-026-00A provides a total stroke of 26 degrees. The stroke angle can be customized according to the application requirement.

Q2: Why does this motor have zero backlash?

The motor uses a direct drive structure. The coil moves directly in the magnetic field without gears or transmission parts, so mechanical backlash and cogging are completely eliminated.

Q3: What is the service life of the motor?

The rated service life is 10,000 hours under normal operating conditions. There are no brushes or wearing transmission components to replace.

Q4: What is the minimum order quantity and delivery time?

The minimum order quantity is 1 piece. Sample orders are delivered within 3 to 5 working days, and bulk production takes 15 to 25 days.

Q5: Can the motor be customized for my product?

Yes. Stroke angle, drive voltage, coil resistance, cable length and mounting dimensions can all be customized for OEM projects. Please provide your application details for a tailored solution.