Brushless Permanent Magnet Stepper U-type Linear Motor : Direct drive linear motors have high force density, high stiffness, enable extremely smooth velocity control and require minimal maintenance. Ironless linear motors typically consist of a U-shaped magnet track, with two plates of magnets facing each other. This reduces heat dissipation and means that ironless linear motors have lower thrust forces than iron core motors. But their lower mass (due to a lighter primary part) give them better acceleration capabilities and short settling times, making them ideal for precise, rapid movements.
Benefits of Ironless Linear Motor:
Smooth motion
Low inertia, high acceleration
Strong overload capacity
Zero cogging and no electromagnetic attraction
Modular design
Maintenance-free, with the grating application to achieve high precision
Equipped with NdFeB magnets (rare earth magnets)
U-shaped ironless linear motors do not have silicone steel sheet in the primary, so it got some benefits like have no cogging force, no magnetic normal force, less weight in the primary.
A linear motor is an electric motor that has had its stator and rotor “unrolled” so that instead of producing a torque(rotation) it produces a linear force along its length. However, linear motors are not necessarily straight. Characteristically, a linear motor’s active section has ends, whereas more conventional motors are arranged as a continuous loop. Permanent Bonded NdFeB Magnet Rotor
Features of Linear Motors
1. Light duty motors for lower force applications with same durable and rugged construction
2. Fan cooled and liquid cooled options for maximum performance
3. Custom designs for any application
4. Available as a component in a complete system solution that includes brushless linear motors, drives, motion controllers, cabling, filters and accessories
Application
“U-channel” and “flat” brushless linear servomotors have proven ideal for robots, actuators, tables/stages, fiberoptics/photonics alignment and positioning, assembly, machine tools, semiconductor equipment, electronic manufacturing, vision systems, and in many other industrial automation applications.
Direct drive linear motors magnetic field
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