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- High Load Capacity to 400 N
- Optional 0.1 µm Direct Metrology Linear Encoder for Exceptional Precision
- Travel Range to 50 mm
- Minimum Incremental Motion to 0.3 µm
- Max. Velocity: 30 mm/s
- Preloaded Frictionless Ball Screw
- MTBF > 20.000 h
- Vacuum-Compatible Versions Available for 10-6 hPa
The M-238 is an ultra-high-load, precision electro-mechanical linear actuator, driven by a ballscrew / gearhead / closed-loop ActiveDrive™ DC motor & encoder assembly. An optional linear encoder provides exceptional accuracy and repeatability.
Direct Metrology Linear Encoder to Compensate Mechanical Play
The M-238.5PL model is equipped with a non-contact optical linear encoder (direct metrology) with an output resolution of 0.1 µm. Because the encoder measures the actual position of the non-rotating actuator tip, drive train errors like backlash and elastic deformations are eliminated.
A lower-cost version with a rotary encoder is available as model number M-238.5PG.
ActiveDrive™ DC Motor
DC motor drives offer several advantages, such as high dynamics, high torque at low rotational speed, low heat and vibration. The ActiveDrive™ design features a high-power PWM (pulse width modulation) servo-amplifier mounted side-by-side with the DC motor.
Typical Applications
Astronomy, Precision machining, Quality control, Test equipment, Flexible automation, Metrology
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M-238 heavy-duty precision actuator for loads to 400N (middle) shown together with M-235 actuator (120 N, top) and CD for size comparison
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