When designing for linear motion applications, it's often better to choose a linear motor over a rotary servomotor and rotary-to-linear conversion components. Why? Rotary-to-linear mechanisms tend to add inertia, friction, compliance, and backlash to desired motion. Linear motors eliminate these concerns.
Low-profile linear motors
BLMFS5 series flat linear motors produce more force per coil length than traditional designs thanks to a laminated iron core and a moving forcer-coil assembly with built-in Hall-effect devices and thermal sensors.
Features & benefits
Continuous force to 377 N; peak force to 1,500 N
Unlimited travel length by stacking magnet tracks
High-energy, rare-earth magnets for high acceleration
Aerotech Inc.
Pittsburgh, Pa.
(412) 963-7470
www.aerotech.com
Circle 151
Hybrid core linear motors
HyCore motors achieve closed-loop brushless linear servomotor performance with open-loop stepper technology.
Features & benefits
Continuous force to 465 N; peak force to 800 N
Zero backlash; high efficiency; unlimited travel; fast velocities; high accelerations
No magnets on stationary platen; easily cut to desired length; does not attract metal particles
Designed to replace ballscrew and belt/pulley actuators in many applications
Baldor Electric Co.
Fort Smith, Ark.
(479) 646-4711
www.baldor.com
Circle 152
Synchronous linear motors
IndraDyn L linear motors offer high continuous and maximum force simultaneously in a compact design with low force ripple.
Features & benefits
Modular system with various motor sizes and lengths
Optional thermal encapsulation
Wear-free motor technology; standard electrical connection
Bosch Rexroth Corp.
Lehigh Valley, Pa.
(610) 694-8298
www.boschrexroth-us.comCircle 153
Iron-core linear motors
LMP heavy-duty linear motors are available in nine coil sizes, designed for high-throughput, high-force applications.
Features & benefits
Anti-cogging design; open-slot construction
Peak force from 5,600 to 27,000 N
Optional stainless steel magnetic way cover kit protects against contamination
Compatible with 3-phase digital brushless motor controllers
Etel Inc.
Schaumburg, Ill.
(847) 519-3380
www.etelusa.comCircle 154
Ironless linear motors
LZ Series ironless linear servomotors provide high force densities, allowing smaller motors to move loads.
Features & benefits
Zero cogging design results in smooth motion
Many coil and magnet options help minimize space requirements
Peak forces from 350 to 4,300 N; continuous forces from 70 to 900 N
Unlimited travel capabilities allow high speed over long distances
Rockwell Automation
Shirley, N.Y.
(631) 344-6600
www.rockwellautomation.comCircle 155
Linear-type stepper motors
Captive Linearstep series motors offer a RoHS compliant design with one-piece captive shaft and guideless movement in a small package.
Features & benefits
Anti-rotation cap allows shaft to actuate without external guide
30-mm stroke; custom lengths available
Travel resolutions from 0.010 to 0.05 mm per step; up to 5 kg force
Ball bearing shaft supports; welded motor case
Nippon Pulse America Inc.
Radford, Va.
(540) 633-1677
www.nipponpulse.comCircle 156
Brushless linear motors
Linear Sigma series includes coreless balanced motors and two types of iron-core motors.
Features & benefits
Linear thrusts from 140 to 6,000 N
Use with Sigma II digital servo amplifiers for plug-and-play linear motion
Servo amplifiers use intelligent serial encoder feedback to automatically recognize motor type
Yaskawa Electric America Inc.
Waukegan, Ill.
(800) YASKAWA
www.yaskawa.com
Circle 157
Anti-cogging linear motors
Ripped series iron-core motors use anti-cog technology to reduce cogging without sacrificing efficiency.
Features & benefits
Design eliminates ripple caused by internal lamination teeth and reduces ripple from lamination edges
Three motor series offered with different coil lengths
Peak force to 9,342 N; continuous force to 2,348 N
Parker Hannifin Corp. Electromechanical Automation Div.
Rohnert Park, Calif.
(800) 358-9070
www.parkermotion.comCircle 158
