Linear Motors & Stages

Linear Motor Products Baldor provides industry with the widest range of linear motors, linear stages and controls. Being a leader in linear motor design and manufacturing, Baldor continually develops advanced products and innovations to meet a variety of linear motion applications.

Linear motors provide unique speed and positioning performance advantages. Linear motors provide direct-coupled motion and eliminate mechanical transmission devices. They offer substantial improvements over applications using ball screws, timing belts, etc. The rugged mechanical design provides accurate motion and precision positioning for hundreds of millions of cycles. Baldor linear motors and stages are used in thousands of successful applications worldwide.

Linear motors provide the following advantages:

High repeatability – resolution to 0.1 microns (0.000004 inch) – this makes sure all parts produced are accurate and identical
Highly accurate – to 2.5 micron/300 mm (0.0001 inch/ft) – provides precise machine operation for precision parts
No backlash – direct drive has no backlash such as with lead screws, gears, etc. this improves the accuracy of the part or operation
Faster acceleration – from 1 to over 10 G’s – this leads to shortened cycle times and improved productivity.
Higher velocities – speeds to over 8 meters/sec (300 inches/second) – to position the payload faster
Long term reliability – only two parts with only one moving part – this leads to simplicity and improves the applications reliability
No wear or maintenance – no contacting parts, thus reducing component friction and wear
Ease of installation – linear motors are designed to allow for alignment tolerances. Misalignment produces no degradation of performance

Linear motors consist of two parts – a stationary track or “platen” and a moving “forcer”. They can be provided as a stand-alone linear motor assembly or as a complete stage – built with a housing or enclosure with linear bearings, limit switches, cable track/carrier, protective bellows and linear encoder in a wide variety of lengths.

BR1202-G Linear Motor Brochure

Download Baldor's linear motor brochure for more details on the products.

Linear Motors

		Brushless Cog-Free – LMCF series Baldor’s cog-free brushless linear motor is designed for unlimited travel servo applications that also require extremely smooth operation with no cogging. Modular track assemblies stack end-to-end to provide the length of stroke required for the application. These motors are supplied in “kit” form to be easily integrated into a machine. The LMCF series provides high peak forces to 2300 N (517 lbs); speeds to 5 m/sec (200 inches/sec); and acceleration to 10 G’s.

		Brushless Iron Core – LMIC series Baldor’s brushless Linear Motor Iron Core motor is designed with advanced technology techniques to minimize cogging, while improving dynamic speed and force capability. The LMIC series has been uniquely designed to providing smooth operation. This series is available in two configurations, a standard profile, and a low profile – for those application requiring smaller, tighter packages. It has unlimited travel utilizing modular platens. LMIC provides high very peak forces to 13,800 N (3100 lbs); speeds up to 8 m/sec (320 inches/sec); and acceleration up to over 10 G’s.

		HyCore - Hybrid Core Linear Motor Baldor has redefined linear motors with a technological breakthrough. Baldor’s new HyCore™ motor combines the best features and performance of traditional high speed, high force, closed loop brushless linear servo motors, with the cost advantages of open loop linear stepper motor technology. HyCore™ includes benefits, which linear motors bring to an application: zero backlash; high efficiency; unlimited travel; fast velocities and high accelerations.

		DC Brushed Linear Servo Motor – LMBR series The brushed linear motor is designed for long stoke self-commutated servo applications. The “platen” contains multiple coils (turns of wire) inserted into insulated slots along with a commutator bar. The “forcer” features multiple permanent magnets and brushes for commutation. It is used with pulse width modulated (PWM) DC servo controls. The LMBR series provides high peak forces of 1070N (171 lbs); speeds to 3.8 m/sec (75 in/sec); and acceleration to 5 G’s.

		AC Linear Induction Motors – LMAC series Baldor’s linear induction motor is designed for extremely long travel applications such as material handling and people movers. The linear induction motor consists of a “primary” which is a coil assembly, and a “reaction plate”. When AC voltage is applied to the coil, a traveling magnet field is created which induces current in the reaction plate. The interaction of the two magnetic fields generates the force and directs linear motion. An adjustable frequency inverter will provide velocity control of this linear induction motor. The LMAC series provides very high peak forces of 2224 N (500 lbs); speeds to 6.8 m/sec (270 in/sec) and acceleration to 1 G.

		Linear Stepper Motor, Single Axis – LMSS series Baldor’s open loop linear stepper motor provides the most economical linear motor positioning package. The “forcer” consists of a 2 or 4 phase motor assembly encapsulated in an aluminum housing supported by bearings. The “platen” consists of photo-chemically etched teeth on a steel bar available in lengths cut per customer specification. The LMSS series provides forces to 220 N (50 lbs); speeds to 1.5 – 2 m/sec (890 in/sec); acceleration to 1 G.

		Linear Stepper Motor, Dual Axis – LMDS series Baldor’s dual axis stepper package provides open loop positioning along two axis of travel. An integrated air bearing system floats the “forcer” less than 25 micrometers (0.001 inch) above the photo-chemically etched steel plate. Preload for the bearing system is provide by the magnetic attractive force between the forcer and the platen. The LMDS may be mounted face up or inverted. A position verification system is available to close the loop.

Linear Stages
		Single Bearing Positioning Stage - LSS series The single bearing positioning stage features lightweight moving parts for higher acceleration of light loads; it is designed for long-stroke closed position loop servo applications. This stage is built with a brushless cog-free linear motor and includes a single rail, integral linear bearing, linear encoder, limit switches and cable carrier.

		Extruded Positioning Stage – LSX series This positioning stage features lightweight moving parts for high acceleration of light loads; it is designed for long-stroke closed position loop servo applications. The LSX series is built with a linear brushless iron core motor to provide higher forces; it includes a modular aluminum construction with linear encoder, limit switches, internal cable carrier, linear bearing and bellows.

		Enclosed Positioning Stage – LSE series The enclosed positioning stage provides high acceleration of heaver loads; it is designed for applications with one or more axes. To provide a variety of forces, the LSE is available with either brushless iron core, cog-free, brushed DC and AC induction motors. The single axis stage includes linear bearing, linear encoder, limit switches, cable carrier and bellows.

		Linear X-Y-Z Gantry – LSG series Baldor’s linear gantry stage is designed to speed up and simplify the building of high throughput, precision positioning systems. The LSG provides a clean, very compact design compared to conventional gantry systems base upon rotary components and ballscrews; it is ideal for applications where space is at a premium. Each axis feature brushless cog-free motors.

Other Linear Products
		Polynoid Linear Motor - LMPY Series The AC polynoid linear motor derives its name from the solenoid - it provides strokes with constant force over a short limited distance. These are induction motors, which consists of a copper clad “rod” and a “stator”. Forces provided up to 240N (54 lbs).

		Non-Commutated DC Linear Motor The non-commutated linear motor provides strokes with constant force over a short limited distance. These are DC linear motors available as either moving magnets or moving coils. Peak forces provided up to 670 N (150 lbs).