PTK-SERIES

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MechaTrans® PTK-Series

Specifications and prices Product description Datasheets Applications and precautions

MTPTK series specifications and prices

All prices exclude tax. Displacement is a nominal value, measured blocked to free.

Model	W x D x H (mm)	Displacement (µm)	Blocked force (N)	Stiffness (N/µm)	Resonance (Hz)	Capacitance (µF)	Solid model	1 pc	5+	25+	100+
MTPTK03S5F50 Datasheet →	3 x 8.6 x 22	5	50	10.0	30,000	0.20	―	71,500	67,925	57,200	50,050
MTPTK03S28F150 Datasheet →	14 x 3 x 52	28	150	5.3	3,500 at 30 g load	1.1	STEP →	93,500	88,825	74,800	65,450
MTPTK05S45F1600 Datasheet →	5 x 15.6 x 52	45	1,600	35.6	2,400 at 130 g load	9.0	STEP →	132,000	125,400	105,600	92,400
MTPTK05S50F2000 Datasheet →	5 x 15.6 x 52	50	2,000	40.0	2,100 at 130 g load	11.0	STEP →	154,000	146,300	123,200	107,800
MTPTK10S50F3000 Datasheet →	10 x 15.6 x 52	50	3,000	60.0	2,600 at 130 g load	25.6	STEP →	176,000	167,200	140,800	123,200

MTPTK-SG series, with strain gauges

Model	W x D x H (mm)	Displacement (µm)	Blocked force (N)	Stiffness (N/µm)	Resonance (Hz)	Capacitance (µF)	Solid model	1 pc	5+	25+	100+
MTPTK05S50F2000SG Datasheet →	5 x 16 x 52	50	2,000	40.0	2,100 at 130 g load	11.0	―	198,000	188,100	158,400	138,600

MTPTK-SI series, silicone coated

Model	W x D x H (mm)	Displacement (µm)	Blocked force (N)	Stiffness (N/µm)	Resonance (Hz)	Capacitance (µF)	Solid model	1 pc	5+	25+	100+
MTPTK10S50F2000-SI Datasheet →	10 x 12 x 52	50	2,000	40.0	2,800 at 130 g load	11.0	―	154,000	146,300	123,200	107,800

MTPTK-VC series, vacuum compatible

Model	W x D x H (mm)	Displacement (µm)	Blocked force (N)	Stiffness (N/µm)	Resonance (Hz)	Capacitance (µF)	Solid model	1 pc	5+	25+	100+
MTPTK10S75F2000-VC Datasheet →	10 x 12 x 92	75	2,000	26.7	1,800 at 130 g load	7.5	―	330,000	313,500	264,000	231,000

Product description

A preload structured piezoelectric actuator is a multilayer stacked actuator built into a preload frame. The frame lets us set the output stroke and blocked force to what an application needs by combining several stacks inside it.

Nano positioning at a glance

An outstanding service life
Nanometre resolution
Microsecond response
Suitable for closed loop control
Blocked force from 50 N to 3,000 N
Travel from 5 to 50 µm

Better reliability from the stack

A multilayer stacked actuator lasts a very long time when it is designed in well, and fails quickly when it is not. The main reason is that it has to run under preload: its tensile strength is only about one tenth of its blocked force. Preloaded properly, a stack can pass more than five billion cycles.

Easy to handle

Getting the best out of a bare stack takes know-how, and an insufficient design costs you output stroke. With the preload structure we guarantee the performance of the stack inside. The frame is tapped, so you bolt it straight into your setup, and unbolt it just as easily if you need to change it. Housed in the frame, the stack is far more robust in a working rig.

Reusable

Because it bolts in and out, the actuator can be moved from one setup to the next. Housed in the preload frame the stack survives handling well, so the chance of reusing it is high.

Built to your requirement

Only a few standard sizes of stacked actuator exist. If you need something outside that, an output stroke above 100 µm for example, you have to order a custom part from the manufacturer, which is expensive and slow, and some manufacturers do not make long stroke stacks at all. We can combine stacks in series or in parallel inside a preload frame to reach the performance you need. The PTK10S90 below is one example.

Operating principle

Long stroke version, PTK10S90

Stacks combined inside one frame give a longer stroke than any single standard part.

Dimensions	14 x 19 x 91 mm
Output stroke	100 µm at -20 V to 150 V

Preload actuator with strain gauges

A piezo actuator has hysteresis, which limits positioning accuracy in open loop. Closing the loop restores linearity, to a degree set by the sensor you use. The example below uses the built in strain gauges as the position sensor with PID control.