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M-227.10 (w/ piezo tip), M-227.25, M-227.50 (w/ ball tip),
High Resolution DC-Mike Actuators and several tip options
Application examples:Metrology, photonics packaging, fiber alignment, quality control, test equipment.
- 10, 25 & 50 mm Travel Range
- 0.05 µm Minimum Incremental Motion
- Non Rotating Tip
- Velocity to 1 mm/sec.
- Closed-Loop DC Motor
- Optional Sub-nm Resolution Piezo Tip
M-227 are ultra-high resolution linear actuators providing linear motion up to 50 mm with sub-micron resolution in a compact package. They consist of a micrometer with non-rotating tip driven by a closed-loop DC motor/gearhead combination with motor shaft mounted high resolution encoder (2048 counts/rev.). Compared to conventional rotating tip micrometer drives the non-rotating tip design offers several advantages:
M-227 actuators provide a cost effective solution for industrial and OEM environments.
- Elimination of torque-induced positioning errors
- Elimination of sinusoidal motion errors
- Elimination of wear at the contact point
- Elimination of tip angle dependent wobble
Based on the successful M-222/M-226 series which they replace, M-227 DC Mikes boast improved specs and reduced costs at the same time. The combination of an extremely low stiction/friction construction and high resolution encoder allows for minimum incremental motion of 50 nanometers at speeds up to 1 mm/sec. Each actuator includes an integral 0.1 m cable with 15 pin D-sub connector and a 3 m extension cable. The connector features integrated line drivers for cable lengths up to 10 meters between actuator and controller.
All models come with standard flat tips. A variety of other tips are available too, e.g. a piezoelectric tip featuring 20 µm travel with sub-nanometer resolution for dynamic scanning and tracking.
For mounting, the DC-Mikes are clamped around the 19 mm diameter sleeve. High forces around the 16 mm diameter sleeve will increase friction and reduce accuracy and must be avoided as well as lateral forces on the tip.
Stepper motor driven versions of the M-227 are in preparation. For higher loads and integrated limit switches refer to the M-230 and M-235 datasheets.
