Motors • Linear Motors

A linear motor, or linear induction motor, is an alternating current (AC) electric motor that features an unrolled stator, allowing the motor to produce linear force rather than torque. Linear motors are used in a number of industrial applications including office and factory automation, medical science/lab instrumentation, optics, fast beam steering, wire bonding equipment, electronics, semiconductor equipment, and renewable energy. Specifically, tubular linear motors are be used in dirty industrial environments because of their ruggedness. There are two major linear motor design types: low acceleration and high acceleration. Low-acceleration linear motors are suitable for trains and other ground-based transportation applications. High-acceleration linear motors – used in rollercoasters - are designed to accelerate an object up to a very high speed and then release it.

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  • Aerotech, Inc.

    Aerotech's brushless, linear servo motors are meant for use with robots, actuators, tables, stages, fiberoptics/photonics alignment and positioning, and many other industrial automation applications. All linear motors are direct drive and consist of a noncontacting forcer coil and U-channel rare-earth magnet track to eliminate backlash, windup, wear, and maintenance issues found with other positioning systems.

  • Airex

    Three series' of linear motors are manufactured by Airex, primarily for use in the semiconductor and optical imaging markets, but also for the manufacture, assembly, and testing of electrical components. The smallest is the P12 brushless linear servomotor, which offers continuous force to 24 lbs, peak force to 76 lbs, and velocities >3 m/sec.

  • Hiwin Corporation

    Three types of linear motors are produced by Hiwin. Synchronous units come in two series: the iron-core LMS and coreless LMC. LMS units can supply between 188 and 741 N of continuous force, while LMC motors offer force from 31.5 to 131.3 N. Customized linear motors include the X-Y Stage, with 188 N upper axis thrust and 314 N lower axis thrust.

  • H2W Technologies, Inc.

    H2W Technologies offers an array of linear motor choices. Their 3-phrase, brushless DC motors are ideal for long-stroke, closed-loop servo, and linear motion applications, and can be used at speeds up to 240"/sec, and capable of force to 1,068 N. Linear brush motors are also available for similar applications, from 1"/sec to 100"/sec.

  • Parker Hannifin Corp.

    Parker Hannifin provides an array of linear servo motors for a range of job requirements. The 400LXR Table Series offers 5G max acceleration, 1,148 kg max load, and 2,650 N peak force, as well as RoHS compliance and sealed design. I-FORCE ironless motors come in 4 product series with up to 6 different coil lengths. Its I-beam shaped coil provides high force density and thermal efficiency. Ironcore motors include the I-FORCE Series, with acceleration to 6 Gs and speed to 5 m/s, and the 2,348 N continuous force RIPPED Series for high force applications.

  • Baldor

    Baldor provides a range of linear motors from cog-free units to dual axis models. The LMCF linear cog-free motor is designed for unlimited stroke servo applications that require smooth operation without clogging. These units feature peak forces to 2,400 N, high acceleration to 98 m/s2, and high speeds to 5 m/s with encoder resolution >1 micron. The LMIC has an iron core and is available in both standard and low profile designs for use in material handling, automatic inspection, bonding, drilling, and similar applications. Other selections include the LMBR brushed linear motor, LMAC linear induction motor, and LMSS and LMDS stepper motors..

  • Nippon Pulse America

    Nippon Pulse America provides a variety of linear motors, including servomotors and stepper motors. Linear shaft servomotors come in diameters from 4 mm to 100 mm, and can achieve stroke lengths from 20 mm to 4.6 m, peak force to 2,340 N, and continuous force to 585 N.

  • Oriental Motor U.S.A. Corp.

    Oriental Motor offers a broad selection of linear motors. The PK Series of 0.36 and 0.72 degree stepping motors are 0.79" to 3.35" large and RoHS Compliant, and also feature a new pentagon (bipolar) 5-lead wire. Their holding torques start at 0.078 N-m and top out at 6 N-m. The PK Series also comes in 0.9 and 1.8 degree models, with unipolar and bipolar connects (4, 5 and 9 lead wire). Lastly, the company offers a variety of AC and DC input stepping motors packaged with drivers, featuring closed-loop configurations and built-in controllers.

  • BEI Kimco Magnetics

    BEI Kimco Voice Coil Actuators are suited for such demanding applications as semiconductor equipment, defense systems and life-sustaining medical systems. These voice coil actuators are direct drive, hysteresis-free, cog-free devices offering high-acceleration and “clean” technology. They deliver infinite position sensitivity, limited only by resolution of the feedback device. These units exhibit perfectly smooth force-versus stroke characteristics. New packaging and miniaturization capabilities offer the designer added flexibility. Units can be packaged for integrated assemblies including encoder, motor, switch or other functions.

  • Applimotion, Inc.

    Applimotion specializes in motors for defense, aerospace, optics, communications, medical devices, automation equipment, and more. Their selection of linear and linear arc motor solutions includes the LIN Series traditional air core linear motors in single or double sided designs, LAC Series linear single-phase motors for actuation, and LARC Series arc-shaped single-sided linear motors for large-diameter, low-profile needs, with either limited-angle or full rotation. Basic sizes range from 30 mm to 1,000 mm, but  custom made special sizes are also available.

  • Micromo

    Micro Motion Solutions carries Quickshaft linear servomotors that have a 6.31 mm rod diameter and rod length between 82 and 154 mm. Among four sizes, these motors produce continuous forces between 3.13 and 9.2 N and peak forces between 9.4 and 27. 6 N, as well as 20 to 120 mm stroke lengths. In addition to 40 to 100 mm repeatability and 180 to 700 mm precision, these motors are capable of maximum speeds from 2.6 to 3.2 m/s.

  • manufactures a complete line of motion control solutions, including a high performance AC servomotor. This unit has torque ratings from 3 to 89 lbs. continuous, speeds to 5,000 RPM, and encoder feedback for position control. They also offer a full line of actuators such as 4" to 220" stroke belt drive actuators with 40 and 80 mm profiles, 4" to 100" ball screw actuators with dual ball rail guides, and 4" to 100" linear motor actuators capable of speeds from 0.01"/sec to 200"/sec speeds, and 5 to 50 lbs. force. Typical applications include automatic assembly, packaging, and material handling machinery.

  • Kollmorgen Corp.

    Platinum Series direct drive linear motors are featured by Kollmorgen with both iron and ironless (slotless) cores. All of these linear motors are frameless, 3-phase, brushless servomotors with permanent magnets. The IC Series Ironcore provides the highest force per frame size, with up to 8,035 N continuous force and 10,000 N peak force. The ICD is like the IC, but with a lower profile design. It offers between 57 and 315 N continuous force, and 170 to 1,130 N peak force. The IL Series ironless motor, because it has no slots for coil windings, offers low mass and no attractive force between the coil assembly and the magnet way. This makes it ideal for applications requiring very low bearing friction and high acceleration of lighter loads.

  • Lin Engineering

    Lin Engineering carries a variety of linear stepper motors in NEMA sizes 8, 11, 14, 17, 23, and 34. In addition to standard step motors, the company carries Super Torque models capable of up to 0.89 N-m holding torque, Xtreme Torque models up to 0.68 N-m holding torque, IP65 and IPX7 rated dust-proof, water-resistant, and submersible models, and more. The company also offers integrated motors that combine steppers with some combination of driver, encoder, and controller, as well as BLDC standard torque motors.

  • MagneMotion, Inc.

    MagneMotion manufactures linear motors with its patented Linear Synchronous Motor (LSM) technology. These units can handle payloads ranging from ounces to tons in almost any environment. The QuickStick 500HT offers high thrust for heavy payloads and high speeds up to 10,000 pounds and 4 m/s, with acceleration up to 2 G (payload dependent) and repeatability at any location +/-1 mm. The QuickStick 100 is for high throughput for smaller payloads and can handle up to 200 pounds, reaches speeds up to 2.5 m/s, and achieves repeatability +/-0.5 mm at any location.

  • Rockwell Automation

    Rockwell Automation features Aronad iron core, ironless and vacuum linear motor products. Iron core motors can provide actuation forces from 30 N to over 11,000 N peak. Their 2-part construction features a 3-phase laminated coil and a single-sided magnet track to deliver performance even in rapid point-to-point positioning applications. Ironless options offer forces from 8 N to 2,000 N peak. In addition to 2-piece design and 3-phase coil, these motors use a balanced, dual-sided U-shaped magnet channel to eliminate cogging in order to achieve consistent velocity control. Vacuum linear motors are contact-free, making them ideal for cleanroom and vacuum compatible environments.


    Servo2Go specializes in linear motors such as the AC and DC servo and stepper types. They have options from a wide variety of suppliers, including Advanced Motion Controls, Applied Motion Products, Nippon Pulse America, and more than a dozen others. Servo motors include the MDM Series, available in NEMA 23, 34, and 42 frame sizes, with continuous torque to 124 lbs/in and speeds to 7,600 RPM; M Series brushless AC servo motors with up to 750 W continuous output power and 21 lbs/in continuous torque; and the I and ID Series brush and brushless servo motors that offer peak torque from 3.01 to 173 lbs/in. Stepper motors come in a variety of NEMA sizes with holding torque ranges from 7 to 15 oz/in to 320 oz/in.

  • Western Components

    Western Components offers six sizes of stepper linear motors: 20 mm/NEMA 8, 42 mm/NEMA 17, 57 mm/NEMA 23, 85 mm/NEMA35, 110 mm/NEMA 42, and 130 mm/NEMA 52. The smallest size provides a 1.8-degree step angle with +/-5% accuracy, +/-10% resistance accuracy, and holding torque between 180 and 300 g/cm. The largest size is available in 0.36- and 0.72-degree step angles with the same step angle and resistance accuracies listed above. It also provides a max radial force of 220 N and max axial force of 60 N.

  • The Precision Alliance

    The Precision Alliance is a supplier of PBA Systems epoxy-slot linear motors, as well as linear motor modules and work platforms. The motors themselves are found in nine series', beginning with the DX20-C2P that is capable of 21.5 N continuous force and 86 N peak force. This motor comes with a standard cable length of 2 m and requires a minimum track length of 180 mm.  The company's linear motor offering ends with the DX90B-C10S, which provides 906.3 N continuous force, 4,531.7 N peak force, and standard track lengths in 300, 600, and 900 mm, as well as a normally-closed thermostat sensors for temperature protection.

  • Motran Industries, Inc.

    Motran Industries offers linear electric motors and actuators. Output forces of <1 lb. to >500 lbs. can be achieved in actuators that measure 1.3 to 45 in3. Overall force ranges from 2 N to 70 N, while holding force starts at 2 N and peaks at 40 N. Other features include sleeve bearing armature support and neodymium-iron-boron magnets.