COVID-19 Notice: We are open! QuickSilver Controls is a part of the essential critical infrastructure supporting Medical, Military, and Food Handling industries. Contact us for sales and support.

Cost Effective Servo Controllers and Servo Motors

Product Line

QuickSilver Controls is proud to announce their 25th year anniversary!

Servo Motor Performance At Stepper Motor Prices can now be achieved with advanced yet cost-effective technology from QuickSilver Controls, Inc. For the past 25 years, we have manufactured servo controllers and high torque brushless AC servo motors at stepper motor prices.

QCI markets high-performance, cost-effective, integrated servo motors utilizing high torque hybrid motors, conventional servo motors, and servo controller/drivers for use in the Original Equipment Manufacturer market

Download Latest Catalog
catalog cover
QCI recognized as a Top 10 Motion Control Systems Solution Provider - 2019
catalog cover

What Makes Us Different?

Servo Control Of Microstep Motors

Our servo controllers convert traditional microstep motors into hybrid servo motors also known as closed loop stepper motors. What the industry commonly refers to as a “stepper motor” is, more accurately, a 2 phase, 100 pole, AC brushless motor. Our digital controllers use a four quadrant vector drive ( similar to a variable frequency drive) to drive our 2 phase AC motors just like traditional servo motors are driven. Since we use servo motor control rather than microstep control, our motors are more efficient (run cooler) and do not stall like traditional micro stepper motors.

Download White Paper

Why Servo a Microstep Motor?

Relative low cost & high perfomarnce output

The servo market has made several transitions over the years. One of the more recent is a wider use of microstep capable step motors as primary movers in servo systems. This transition has been fueled by the growing availability of powerful Digital Signal Processors at affordable prices, as well as control algorithm development. These new step motor based servos include true servo motors using control algorithms which modulate motor torque to perform the requested motion, as well as pseudo servo motors which dynamically vary the step rate to prevent loss of steps.

Download White Paper

How Our Servos Run Cooler?

More Efficient and Less Resistive Losses

“Motor Quality Factor” is the ratio of torque to the square root of power needed to generate that torque. The Motor Quality factor, Kq, gives a good method to compare various motors regardless of winding choices. This white paper compares one of QCI's high pole servo motor to a low pole count conventional servo of simialr size, and explains why QCI's servos are much more efficient, and thus run cooler.

Download White Paper

About QuickSilver Controls, Inc.

QuickSilver Controls, Inc. is a motion control product manufacturer based in San Dimas, California established in 1996. QCI markets high-performance, cost-effective motion control products, servo controllers and motors for use in the Original Equipment Manufacturer market. We continuously apply our patented technology to solve new challenges in the fields of motion control and servo motor control.

OEM Markets

High-performance motion control products for the Original Equipment Manufacturer (OEM) market.

Our high-torque servo motors, and matching servo controllers support OEM’s including:

  • Document/Paper Handling
  • Electronic Assembly and Testing
  • Entertainment Industry
  • Factory Automation
  • Food Processing
  • Labeling
  • Material Handling
  • Medical/Pharmaceutical
  • Military
  • Test and Measurement Equipment
  • Packaging
  • Pick and Place
  • Robotics
  • Semiconductor
  • Stepper motor Replacement
  • Tensioning Systems
  • Textile
  • Web Handlers

The QCI Advantage

The advantages of selecting a QCI motion control product:
  • More Torque for Less Money
  • High Accuracy & Precision
  • Power Savings/High Efficiency
  • High Inertial Loads (Eliminates Gearheads)
  • Anti-Hunt™: No Servo Dither
  • Rapid Application Development
  • Customer-Driven

Learn More...

Our Success Stories

A brief list of our success stories.

Download PDF for more details.

  • Anti-Lock Brake System Tester
  • Camera Positioning
  • Eye Scanner
  • Film Processing
  • Hard Drive Test/Assembly
  • Medical Sample Testing
  • Precision Pumps
  • Rope/Wire Braiding
  • Wafer Handling

Download PDF