Slotless Linear Servo Motor

Compumotor's SL Series brushless linear servo motors feature the same slotless winding design made popular by our SM and SE Series rotary servo motors. Along with reduced manufacturing costs, the slotless design creates several performance advantages when compared to traditional ironcore and ironless linear servo motors:

• Single-row magnet bar
• Lower cost and weight (compared to ironless design)
• Better heat dissipation (compared to ironless design)
• More force per package size (compared to ironless design)
• Lighter weight forcer (compared to ironcore design)
• Lower attractive forces (compared to ironcore design)
• Less cogging force (compared to ironcore design)

The Linear Motor Concept

The idea is simple enough. Take a conventional rotary servo motor and unwrap it. What was the stator is now a forcer and the rotor becomes a magnet bar. WIth this design, the motor is connected directly to the load. Direct linear motion is achieved without any rotary to linear transmission devices. The direct coupling of the forcer to the load provides these performance benefits:

• High Speeds
• Zero Backlash
• Fast Response
• High Precision
• High Stiffness
• Low Maintenance

• SL Flyer
• SL Complete Documentation
• SL Forcer Installation Guide
• SL Magnet Bar Installation Guide
• SL102 Forcer Dimensions
• SL102 Magnet Bar Dimensions
• SL063 Forcer Dimensions
• SL063 Magnet Bar Dimensions
• SL140 Forcer Dimensions
• SL140 Magnet Bar Dimensions
• Support & Sample Files