20N non-magnetic and vacuum capable high precision linear actuator
The Piezo LEGS® LT20 linear motor is intended for OEM applications with focus on precise positioning in magnetic, vacuum or normal temperature and pressure (NTP) environments
A linear actuator with exceptional size to force ratio and nanometer precision.
- 20 N force
- Non-magnetic
- Vacuum capable
- Nanometer precision
- Direct drive – backlash free
- No power draw in hold position
- Self locking during power loss
- Quick response and high speed dynamics
LEGS® LT20 linear actuator
The LT20 linear motor is intended for a large range of OEM applications. Design focus has been for ease of integration. The very high speed dynamics and nanometer resolution makes it ideal for numerous applications.
The Piezo LEGS technology is characterized by its outstanding precision. Fast speed and quick response time, as well as long service life are other benefits. In combination with the nanometer resolution the technology is quite unique.
The motor is ideally suited for move and hold applications or for automatic adjustments. When in hold position it does not consume any power. The drive technology is direct, meaning no gears or lead screws are needed to create linear motion. The motor has no mechanical play or backlash. The LT20 linear motor is available in standard version, vacuum version, and non-magnetic vacuum version.
Specifications LEGS® LT20
|
Type
|
Normal (A) |
Vacuum (C) |
Non-magnetic vacuum (D) |
Unit |
|
Maximum stroke
|
74.5
|
mm
|
||
|
Maximum speed
Driver dependent |
24
|
mm/s
|
||
|
Minimum speed
Driver dependent |
1
|
nm/s
|
||
|
Stall force
|
20
|
N
|
||
|
Holding force
|
>20
|
N
|
||
|
Vacuum
|
No
|
Yes
|
10-7 torr
|
|
|
Non-magnetic
|
No
|
Yes
|
|
|
|
Operating voltage
|
42-49
|
V
|
||
|
Power consumption
|
10
|
mW/Hz
|
||
|
Mechanical size L x H x D
with guides and encoder |
N/A
|
mm
|
||
|
Mechanical size L x H x D
without guides and encoder |
22 x 21.8 x 10.8
|
mm
|
||
|
Weight
with 50 mm drive rod |
29
|
gram
|
||
|
Material in motor housing
|
Stainless steel
|
Arcap/Non-magnetic
|
|
|
|
Operating temperature
recommended |
-20 to +70
|
ºC
|
||
|
Connector motor
|
2 x JST BM05B-SRSS-TB
|
Soldered cable 2 x JST O5SR-3S
|
|
|
|
Connector encoder
|
N/A
|
|
||
|
Resolution motor
|
<1
|
nm
|
||
|
Built in encoder
|
No
|
|
||
|
Encoder resolution
|
N/A
|
|
||
Main dimensions LT20
Motor performance LT20
Motor performance with waveform Rhomb (filled) and waveform Delta (dotted). The full step length is the average distance the drive rod moves when the legs take one full step (i.e. for one waveform cycle).
Note: A standard deviation σ of 0.5 μm should be taken into account.
Typical values are given for 20ºC.
Stroke range
|
Stroke (mm) with one adapter
|
Drive rod length (mm)
|
|
0-6.6
|
30
|
|
0-16.6 |
40
|
|
0-26-6 |
50
|
|
0-36.6 |
60
|
|
0-46.6 |
70
|
|
0-77.4 |
101
|
Motor speed at 20 ºC
|
Waveform
|
Max feq. (Hz)
|
Speed range (mm/s)
|
|
Delta
|
3000
|
0-15
|
|
Rhomb |
3000
|
0-24
|
Controlling the motor
Our motor control units come in many different versions, with controllers and amplifiers for laboratory use as well as for integration into OEM devices.
We can also license the drivers for customers that want to build their own driver electronics.
LT20 LEGS® starter kit
Starter kits are available for the LT20 in different configurations. Starter Kits are for evaluation purposes only with a max quantity of 3 kits/customer. You only pay for the motor.
Configure the LT20 and get a quote
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