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2" (50 mm) Motorized Actuators
Three LNR50DD Stages
50 mm Travel
50 mm Travel
|Typical Step Sizea||20 nm|
|Maximum Step Sizeb||<30 nm|
|Step Size Adjustabilityc||≤30%|
|Maximum Step Frequencyd||2000 Hz|
|Maximum Axial Preloade||25 N|
Axial Load Capacityf
|2.5 kg (5.51 lbs)|
||2 mm/min (Typical)
<3.5 mm/min (Maximum)
|Drive Screw||1/4"-80 Thread, Hard PVD Coated|
|Motor Type||Piezoelectric Inertia|
|Mounting Options||Ø3/8" (9.5 mm) Barrel|
|3/8"-40 Threaded Barrel|
|Operating Temperature||10 to 40 °C (50 to 104 °F)|
|Dimensions||3.80" x 1.24" x 0.67”
(96.6 mm x 31.5 mm x 17.0 mm)
|Cable Length||1.0 m (3.28')|
|Compatible Controller||KIM001 or KIM101|
Thorlabs' PIA50 Piezoelectric Inertia Actuator provides high-resolution linear motion control with a long piezo-controlled translation range in a compact package. It can support loads up to 2.5 kg (5.51 lbs) and preloads up to 30 N with typical movements of 20 nm and no backlash. The step size can be adjusted up to 30% to a maximum of approximately 30 nm using the KIM101 Controller and Kinesis® software. However, due to the open-loop design, hysteresis, and application conditions, the achieved step size of the system can vary over 20%. An external feedback system will need to be used to overcome this variance.
This actuator has a 3/8" (9.5 mm) mounting barrel with a 3/8"-40 thread on the front of the barrel for compatibility with our wide range of translation and rotation stages. For compatibility with 1/4"-80 threaded mirror mounts see our 10 mm travel piezo inertia actuator. The actuator is self-locking when at rest and when there is no power supplied to the piezo, making the actuator ideal for set-and-hold applications that require nanometer resolution and long-term alignment stability. Manual adjustments can be made at any time, as long as the piezo is not actively translating the screw, by using the rear-located thumbscrew or with a 5/64" (2 mm) hex key.
Powered by a 10 mm (0.39") long discrete piezo stack, the actuator can operate at speeds of up to 3.5 mm/min. The design of the piezo motor will rotate the tip of the lead screw during translation. As shown in the image to the right, the control cable for each actuator can be rotated up to 110° for space-constrained applications.
For information on the design of our piezo inertia "slip-stick" motor actuators, please see the complete presentation here.
A K-Cube Piezo Inertia Controller is required to operate our PIA50 Piezo Inertia Actuator; the actuator cannot be operated using a standard piezo controller. The K-Cube controllers have an internal sawtooth voltage signal generator capable of sending sub-millisecond pulses (steps) with controllable amplitudes from 85 V to 125 V. In addition to a single-channel driver, we offer a four-channel driver capable of single- or dual-channel operation, which is ideal for applications involving multiple motorized actuators, such as beam steering.
For more information, please see the full web presentation.
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|Travel Range||50 mm (1.97")|
|Unidirectional Repeatability||±1.6 µm|
|Bidirectional Repeatability||±3.9 µm|
|Maximum Pushing Forceb||180 N|
|Maximum Velocity||50 mm/s|
|Maximum Acceleration||50 mm/s2|
|Limit Switches||Hall Effect|
|Homing Repeatability||±3.6 µm|
|Motor Type||2-Phase Stepper Motor|
|Full Step Angle||1.8°|
|Lead Screw Pitch||1.0 mm|
|Microsteps per Revolution||409 600|
|Actuator Mass||0.66 kg|
|Compatible Controllers||BSC201, BSC202, BSC203,
The DRV250 offers 50 mm (1.97") of travel and a unidirectional repeatability of ±1.6 μm. When used with one of our stepper motor controllers, the DRV250 achieves a theoretical minimum step size of 2.4 nm and a maximum speed of 50 mm/s.
The hybrid stepper motor, with its rotor that consists of 50 individual magnetic teeth, is ideally suited for micro-stepping applications. Aside from the increase in resolution resulting from increasing the steps per revolution from 200 to 409 600, micro-stepping also ensures smoother low-speed motion by allowing the discrete 1.8° step size to be reduced to much smaller steps, resulting in lower vibrational noise.
The DRV250 stepper motor drive is equipped with a trapezoidal screw thread for more efficient high-load operation than is available from a standard threading.
This actuator is compatible with our 2" TravelMax manual stages. To use the DRV250 with these stages, mount the motor to the side of the stage using two 40 mm long M4 cap screws (included). In order to secure the TravelMax stage to a table while using the DRV250 actuator, the LNR50P4(/M) base plate is required.
|1||Limit Grounda||9||Ident (for Future Use)|
|2||CCW Limit Switch||10||+5 V|
|3||CW Limit Switch||11||Reserved for Future Use|
|4||Motor Phase B-||12||Reserved for Future Use|
|5||Motor Phase B+||13||+5 V|
|6||Motor Phase A-||14||Reserved for Future Use|
|7||Motor Phase A+||15||Ground|
|8||Reserved for Future Use||-||-|