VARS0017 90 Degree Rotary Voice Coil Motor Fast Response Zero Backlash

Product Overview

The VARS0017-090-00A is a 90-degree rotary voice coil motor in the SUPT MOTION VARS series, designed specifically for large-angle and limit-angle positioning, featuring fast response and zero backlash. At 25 °C, this rotary voice coil motor, driven by a maximum voltage of 11.1 V, delivers a peak torque of 0.17 N·m and a continuous torque of 0.1 N·m over its full 90-degree stroke range. The voice coil weighs only 17.8 g, and the motor housing measures 70 × 41.5 × 39 mm. The oscillating voice coil design converts drive current directly into rotational torque, providing high-frequency oscillation capability and exceptionally smooth motion without the need for gears, brushes, or mechanical transmission. This makes the actuator ideal for scanning mirrors, rotary switches, valve control, and other applications requiring a combination of large angular travel and precise, repeatable positioning. With a service life of 10,000 hours, an aluminum alloy construction, and no maintenance required, the VARS0017-090-00A is a reliable alternative to stepper motors and geared servo systems.

Solution

Wide-angle positioning tasks are typically accomplished using stepper motors or gear-driven systems, but these can lead to issues such as backlash, audible noise, resonance, and cumulative positioning errors. The VARS0017-090-00A offers a backlash-free, direct-drive solution with a stroke of up to 90 degrees. Since torque is proportional to current, this swing voice coil motor enables linear control and can be driven in simple open-loop force mode or operated in closed-loop position mode in conjunction with an encoder or Hall sensor. The lightweight coil assembly supports high-frequency bidirectional motion, which is critical for scanning, jittering, and dynamic damping applications. Zero backlash ensures that the output angle remains consistent for a given command, thereby improving repeatability and reducing settling time. The gearless design also eliminates the need for lubrication and gear wear, reducing the total cost of ownership. System designers can benefit from this compact, easy-to-install and control actuator that is ready for mass production. The swing voice coil motor can operate continuously at rated torque and intermittently at peak torque, providing designers with a wide operating window for demanding duty cycles.

Specifications

Application

The 90 degree stroke makes this actuator ideal for rotary valve control, damping actuators, mirror positioning for laser technologies, rotary positioning systems and flight control actuators. It is applied in the semiconductor, automotive, industrial and aerospace industries, and in test and measurement equipment where fast, precise angular positioning is required. Typical uses include optical switch rotation, antenna alignment, fluid valve modulation, camera turret positioning and haptic feedback mechanisms. The high frequency response also supports active vibration cancellation and scanning applications. Custom voltage, stroke and interface options are available for integration into specific OEM systems.

FAQ

Q1: How large is the angular stroke of this model?

The total stroke is 90 degrees, which is the widest standard stroke in the small VARS series. Custom strokes from 6 to 100 degrees are available on request.

Q2: Can the motor oscillate at high frequency?

Yes. The low mass moving coil and direct drive design support high frequency bidirectional oscillation, making the motor suitable for scanning, dithering and active damping applications.

Q3: Does the motor need a gearbox?

No. The swing voice coil motor is a direct drive actuator. No gearbox is required, which is why the system has zero backlash and no lubrication needs.

Q4: What feedback options are supported?

The motor can be used with encoders, Hall sensors or analog position sensors to build a closed-loop positioning system. The frame provides mounting space for customer feedback elements.

Q5: What is the warranty period?

The standard warranty is 1 year. Technical support for integration and driver selection is provided by the SUPT MOTION engineering team.