Mechano Transformer Corp.

Fast Response Piezo Actuator

MechaTrans® K-Series

The MechaTrans®K-Series is a piezoelectric actuator that has a higher rigidity/stiffness and higher resonance frequency compare to the MechaTrans®DD-Series or the MechaTrans®D-Series. Therefore the MechaTrans®K-Series has a shorter rise time. The MechaTrans®K-Series consists of a stroke magnification / amplification structure and multilayer stacked piezoelectric actuators. With the stroke magnification structure, the stroke is magnified to overcome the limitation of the multilayer stacked piezoelectric actuator. However, the magnifiation / amplification ratio is smaller than the MechaTrans®DD-Series or the MechaTrans®D-Series. Like the MechaTrans®DD-Series or the MechaTrans®D-Series, the MechaTrans®K-Series is designed flat and compact in size, therefore the efficiency of the space utilization is high. The output stroke is converted to 90 degree in direction compare to the original output stroke of the multilayer stacked piezoelectric actuator. When a voltage is applied to the MechaTrans®K-Series, it shrinks as shown in Fig. 2.

Features of the MechaTrans®K-Series

  • High resonance frequency.
  • High blocked force.
  • Fast response / Short rise time
  • Flat and compact.
  • Output stroke of the piezoelectric actuators is converted to 90 degrees in direction.
  • The MechaTrans®K-Series shrinks as Fig.2 when a voltage applied.
  • Output stroke direction is opposite to the MechaTrans®KK-Series

The operating principle of the MechaTrans®K-Series

Mechanical tapped holes are fabricated at both sides of the MechaTrans®K-Series. Lead wires of red and black(white) are attached at the piezoelectric actuators. Fig. 1 shows an example of the connection between the driver and the piezoelectric actuators. A resistance may be needed in between depend on the driving conditions.

When a voltage is applied to the piezoelectric actuators, the MechaTrans®K-Series shrinks as shown in Fig. 2.

Fig.1 The piezoelectric actuator system

Fig.2 Operating principles of the MechaTrans®K-Series

MTK Series

prices in the table are tax included for Japan domestic customers. For overseas (non-Japan) customers, 10% sales tax will be deducted from the price stated.

Outoline
dimension[mm]
W×D×H
Displacement
[μm]
Blocked force
[N]
Stiffness
[N/μm]
 Resonance
frequency
 [Hz]
Capacitance
[μF]
Solid
Model
Price [¥]
1pc 5pcs
&
above
25pcs
&
above
100pcs
&
above
MTK08S130F13
Datasheet Download
28×8×8 130 13 0.10 1750 0.73   93,500 88,825 74,800 65,450
MTK08S160F30
Datasheet Download
28×8×8 160 30 0.19 3000 0.87   99,000 94,050 79,200 69,300
MTK12S100F55
Datasheet Download
24×12×7.96 100 55 0.65 8000 1.31 104,500 99,275 83,600 73,150
MTK12S18f25000
Datasheet Download
12×4.6×12 18 14 0.80 25000 0.60 Download 110,000 104,500 88,000 77,000

*1 : Nominal value  *2 : Blocked-Free

Applications of the MechaTrans®KK-Series

These are some examples of the application of the MechaTrans®KK-Series.

  • Haptics actuator
  • Precision stage for lithography process.
  • Auto focus module for camera
  • Mass flow

Operating precautions for MechaTrans®

Please confirm the following operating precautions before using MechaTrans®K-Series.

  1. Hysteresis
  2. Continuous DC voltage under high humidity
  3. Avoid excess tensile force against PZT and/or compression force to the arm
  4. Do not superimpose DC voltage instantaneously
  5. Ambient temperature
  6. Polarization
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