Low profile: Only 14 mm in height
Positions larger loads quickly and with precision: Load to 20 N, closed-loop velocity to 540 °/s, minimum incremental motion to 12 µrad
Unlimited rotation range >360°
Drive torque to 0.3 Nm in both directions of rotation
Self-locking when switched off: Saves energy and reduces generation of heat
Central aperture for more fields of application
Vacuum versions available
Precision-class rotation stage
PILine® stages are particularly suitable for applications that require fast precision positioning. When switched off, the self-locking drive holds the position of the stage mechanically stable. Energy consumption and heat generation is therefore considerably reduced. Applications with a low duty cycle that are battery-powered or heat-sensitive benefit from these characteristics. The position of the axis is measured by an encoder and an optical reference switch allows reliable repeatable motion. The piezo motor drive principle and its electrical operation is inexpensive and can be customized.
PILine® ultrasonic piezo motors
An integral part of a PILine® ultrasonic piezo motor is a piezo actuator that is preloaded against a movable, guided runner via a coupling element. The piezoceramic actuator is excited to ultrasonic oscillation by a high-frequency AC voltage between 100 and 200 kHz. Deformation of the actuator leads to periodic diagonal motion of the coupling element relative to the runner. The feed created is a few nanometers per cycle; the high frequencies lead to the high velocities. Preloading the piezoceramic actuator against the runner ensures self-locking of the drive when at rest and switched off.
Direct position measurement with incremental encoder
Noncontact optical encoders measure the actual position directly at the motion platform with the greatest accuracy so that nonlinearity, mechanical play or elastic deformation have no influence on position measuring.
Crossed roller bearings
With crossed roller bearings, the point contact of the balls in ball bearings is replaced by a line contact of the hardened rollers. Consequently, they are considerably stiffer and need less preload, which reduces friction and allows smoother running. Crossed roller bearings are also distinguished by high guiding accuracy and load capacity. Forced guiding of the rolling body cages prevents the roller bearings from creeping.
Valid patents
US patent no. 6,765,335B2 European patent no. 1267425B1
Fields of application
Micromanipulation, automation, biotechnology, sample manipulation, sample positioning, optical metrology, vacuum applications to 10-6 hPa (optional)
- Low profile: Only 14 mm in height
- Positions larger loads quickly and with precision: Load to 20 N, closed-loop velocity to 540 °/s, minimum incremental motion to 12 µrad
- Unlimited rotation range >360°
- Drive torque to 0.3 Nm in both directions of rotation
- Self-locking when switched off: Saves energy and reduces generation of heat
- Central aperture for more fields of application
- Vacuum versions available
Precision-class rotation stage
PILine® stages are particularly suitable for applications that require fast precision positioning. When switched off, the self-locking drive holds the position of the stage mechanically stable. Energy consumption and heat generation is therefore considerably reduced. Applications with a low duty cycle that are battery-powered or heat-sensitive benefit from these characteristics. The position of the axis is measured by an encoder and an optical reference switch allows reliable repeatable motion. The piezo motor drive principle and its electrical operation is inexpensive and can be customized.
PILine® ultrasonic piezo motors
An integral part of a PILine® ultrasonic piezo motor is a piezo actuator that is preloaded against a movable, guided runner via a coupling element. The piezoceramic actuator is excited to ultrasonic oscillation by a high-frequency AC voltage between 100 and 200 kHz. Deformation of the actuator leads to periodic diagonal motion of the coupling element relative to the runner. The feed created is a few nanometers per cycle; the high frequencies lead to the high velocities. Preloading the piezoceramic actuator against the runner ensures self-locking of the drive when at rest and switched off.
Direct position measurement with incremental encoder
Noncontact optical encoders measure the actual position directly at the motion platform with the greatest accuracy so that nonlinearity, mechanical play or elastic deformation have no influence on position measuring.
Crossed roller bearings
With crossed roller bearings, the point contact of the balls in ball bearings is replaced by a line contact of the hardened rollers. Consequently, they are considerably stiffer and need less preload, which reduces friction and allows smoother running. Crossed roller bearings are also distinguished by high guiding accuracy and load capacity. Forced guiding of the rolling body cages prevents the roller bearings from creeping.
Valid patents
US patent no. 6,765,335B2
European patent no. 1267425B1
Fields of application
Micromanipulation, automation, biotechnology, sample manipulation, sample positioning, optical metrology, vacuum applications to 10-6 hPa (optional)
