FANUC America offers its experienced team to help solve the most complex automation challenges for any size business.
FANUC’s servo motors feature high reliability, easy maintenance and exceptional electrical efficiency.
FANUC’s servo motors are designed and manufactured with a focus on the ultimate in performance, reliability and efficiency. Our powerful high-speed machining technology and energy efficiency functions vastly reduce cycle times while ensuring a high degree of accuracy and precision.
FANUC produces four types of servo motors. Our BETA i-B Series servo motors offer a significant performance-to-cost ratio, making them ideal for entry-level machines. Our ALPHA i-B Series servo motors deliver ultra-smooth rotation and superior acceleration for compact high-speed and precision machines.
FANUC’s Direct Drive DiS-B Series servo motors are ideal for rotary tables and axes; they offer huge amounts of torque with an extremely smooth feed while achieving high speed, high precision and maintenance-free operation. The Linear LiS-B Series servo motors work without force transmission mechanisms to simplify machine design and maintenance and provide massive amounts of thrust force.
FANUC’s BETA i-B Series servo motors are highly reliable motors ideal for feed axes of entry-level machines, positioning axes and peripheral units. This series’ pulsecoder and special magnetic pole shape, which minimizes cogging torque, and the latest SERVO HRV+ Control achieve extremely smooth motor rotation, enabling machining of very high precision and quality.
Our BETA i-B Series servo motors’ unique seal structure offers high-quality waterproofness. This feature helps businesses keep downtime to a minimum.
BETA i-B Series servo motors feature:
The FANUC ALPHA i-B Series servo motors offer exceptional performance, enabling high-speed, high-precision machining on machines of all sizes. This series’ excellent torque characteristics provide quick acceleration to high-speed range, helping decrease cycle time. ALPHA i-B Series servo motors’ pulsecoder, unique magnetic pole shape and SERVO HRV+ Control achieve tremendously smooth motor rotation for high-precision and high-quality machining.
As with our BETA i-B Series, our ALPHA i-B Series servo motors’ seal structure offers exceptional waterproofness, helping minimize downtime.
ALPHA i-B Series servo motors feature:
FANUC’s Direct Drive DiS-B Series synchronous, built-in torque servo motors are ideal for rotary tables and rotary axes for 5-axis machines. Rare-earth magnets help deliver high torque, and the motor ampilifer’s circuit design mitigates torque ripple. Our DiS-B Series servo motors can either be air-cooled or, for increased performance, oil- or water-cooled.
DiS-B Series servo motors feature:
FANUC’s LiS-B Series linear motors have set new standards for acceleration, precision and speed, delivering high gain and rigidity with excellent path accuracy. Unlike conventional drives, these motors work without any force transmission mechanisms, making machine design and maintenance easier (no ball screws, no backlash). The linear design enables rigid long-stroke axes, increased thrust force and multi-head configurations by arranging multiple coil sliders on a single magnet track.
LiS-B Series servo motors feature:
A conventional servo motor converts electrical energy into rotational motion. It comprises stator windings and housing, permanent magnet rotor and laminates, pulse coder and end rear bell along with front and rear bearings.
The stator windings and housing represent the electromagnetic part of the servo motor. Its C-face mounting secures it to the frame of a machine or load that is to be controlled. Its ferrous core, made of steel laminates, focuses the magnetic field produced when electrical current flows in the copper winding. Embedded in the stator laminates, the copper winding is a 3-phase winding in FANUC’s star configuration. For each revolution of output from a servo motor, the 3-phase input power must be cycled four times. Hence, FANUC servo motors are built in what’s referred to as quadrature.
The motor rotor is the rotating part of the motor that is usually coupled to a ball screw. It is made of an output shaft that is centered in an iron mass constructed of steel laminates. The rotor is suspended by a pair of bearings holding the output shaft in the center of the stator. The rotor’s magnetic field is made of permanent magnets that are embedded in the rotor. Usually, four pairs of north-south magnets exist, making most FANUC servo motors 8-pole motors.
To cause motion between the permanent and electromagnet magnets used in a typical servo motor, current must be applied to the electromagnet’s winding. This causes a magnetic field to be generated around the conductor carrying the current. The magnetic field generated by passing current through a conductor will change polarity, depending on the direction of the current flow. The magnetic field induced by the wire is not enough to cause the second magnet to move.
To amplify the magnetic field, the wire is stacked upon itself multiple times. By doing so, the magnetic field is multiplied by the number of wires stacked in the coil. Additionally, the winding is mounted with an iron center, further focusing the generated magnetic field. When passing current through a coil of wire with an iron core center, a strong magnetic field is generated. Once we have a magnetic field generated by the electromagnet, the permanent magnet reacts to it. The amount of attracting or repelling force generated by the magnets matches the two magnets’ strength.
Servo motors deliver superb acceleration and are valued for their first-rate performance, reliability and efficiency. Servo motors are used in any application requiring smoothness, precision, repeatability and dependability.
Servo motors don’t just have special application in CNC machinery, robotics and automated manufacturing; these motors are used in antenna positioning devices, cameras, conveyor belts, door openers and in many other business and consumer products and applications. FANUC servo motors are used worldwide and have earned a reputation for their consistently high level of build quality, producing exceptional performance with extraordinary efficiency.
At FANUC America, we put "Service First." We're here to service your FANUC product 24/7.
We offer a wide range of automation training courses designed to fit your busy schedule.