VARS0350 Rotary Voice Coil Motor High Stability 3.5Nm 60deg Swing Actuator

Product Overview

The VARS0350-060-00A is a heavy-duty swing-type rotary voice coil motor introduced by SUPT MOTION, designed specifically for wide-angle positioning and stabilization tasks that require high torque. At 25 °C, this rotary voice coil motor delivers a peak torque of 3.5 N·m and a continuous torque of 1.14 N·m over an exceptionally wide total stroke range of 60 degrees, with a maximum drive voltage of 25.8 V.
The moving coil weighs 115 grams, and the actuator body measures 115 × 65 × 54.5 millimeters. Like all VARS series voice coil motors, the coil moves directly within the magnetic field, giving the device a linear torque-current relationship with zero backlash and no cogging effect, even at such high power levels.
This model of voice coil motor is specifically designed for rotary systems that require large-angle movement while carrying heavy loads, such as large steering mirrors, industrial valves, damping mechanisms, and positioning gantries. The robust aluminum construction and large bearing contact area ensure high stability of the rated torque, while the 10,000-hour design life keeps the total cost of ownership for continuously operating equipment low.

Solution

Wide-angle rotary actuators in industrial equipment typically rely on servo motors equipped with harmonic or belt reducers. While these components provide torque, they introduce backlash, compliance, and periodic errors, which reduce positioning stability and require frequent maintenance in dusty environments or those with high cycle rates.
The VARS0350-060-00A replaces the combination of a motor and a reducer with a single direct-drive element. The coil instantly generates torque proportional to the applied current, enabling the control loop to achieve smooth, highly stable motion across the entire 60-degree range of motion.
With a peak torque of 3.5 N·m and a continuous torque of 1.14 N·m, this rotary actuator can rapidly accelerate high-inertia loads and resist external disturbances to maintain a stable position without the need for mechanical braking.
Its wide stroke capability eliminates the need for multi-turn gear drives in many applications, while the backlash-free magnetic coupling improves bidirectional repeatability in processes such as valve metering, antenna pointing, and mirror gimbal control. With no wear-prone transmission components, this solution reduces downtime and simplifies maintenance—which is particularly important for equipment operating around the clock in factories, vehicles, or aerospace test benches.

Specifications

Application

This voice coil actuator can serve as a mirror position actuator in large-aperture laser systems, telescope beam guides, and optical tracking mounts, as well as a rotary valve actuator for metering fuel, coolant, and process gases. Its 60-degree stroke and high stability also make it suitable for use as a damping actuator in structural vibration control, rotary positioning systems in machine tools, and flight control actuators in unmanned aerial vehicles (UAVs).
This voice coil motor is widely used in the semiconductor, automotive, industrial, and aerospace industries, and can be employed wherever a large-angle, high-torque, backlash-free rotary platform is required. Within its rated continuous torque range, the motor supports continuous oscillation, making it suitable for contour scanning and testing; its rugged housing can withstand shocks and vibrations in mobile installation environments.

FAQ

Q1: What loads can the VARS0350-060-00A drive?

With 3.5 N·m of peak torque and 1.14 N·m of continuous torque at 25 °C, the actuator drives mirrors, valves and gantries with moderate inertia. The exact acceleration depends on the load inertia and the available current from the driver.

Q2: What is the total stroke of this model?

The total stroke is 60 degrees, one of the widest in the VARS series. For applications needing a smaller range, both mechanical and electrical angle limiting are available.

Q3: How is high stability achieved at a holding position?

Stability comes from the direct-drive voice coil principle: torque is proportional to current with no friction, backlash or cogging, so a closed-loop controller can hold the shaft rigidly at any angle within the stroke without hunting.

Q4: What are the lead times and customization options?

The minimum order quantity is 1 piece. Samples are delivered in 3-5 working days and production orders in 15-25 days. Custom stroke, drive voltage, shaft configuration and mounting dimensions are available for OEM requirements.