Rotary Piezo LEGS®, designed for vacuum and magnetic environments

A 50mNm torque output version for non-magnetic and/or vacuum environments. The non-magnetic version comes with built-in encoder or with extended shaft for customer encoder customization.

LR23-50 Rotary Piezo Motor

Rotary Piezo Motor with built in encoder and 50mN, torque output

  • Rotary direct drive
  • Built in encoder
  • 50mNm torque output
  • Vacuum compatible
  • Non-magnetic
  • Self-locking
  • No backlash

Concept Rotary LEGS®, piezo motor for vacuum and magnetic environments

This is our rotary Piezo LEGS®, with direct drive and 50mNm torque output. The i gives closed loop resolution of 0.2 mrad (0.01°), while open loop resolution is sub-microradian. Full force power-off locking is a safety function inherent to the design.Designed for vacuum and magnetic environments.

LR23-50 mNm product portfolio

  • with encoder
  • without encoder
  • without encoder and with extended shaft

Specifications LEGS® LR23-50

Type
Non-magnetic (C)
Non-magnetic (C), ext. shaft
Non magnetic (C), encoder
Non-magnetic  vacuum (D)
Non-magnetic  vacuum (D), ext shaft
Unit
Diameter 23
mm
Angular range
360
°

Speed Range
@ Rhomb, no load, 20°C
0-160 (0-27 rpm)
°/s
Step angle, full step
@ Delta, no load, 20°C
550
µrad
Motor resolution
14 bits, 8192 microsteps
<1
µrad
Built in encoder
No
No
Yes
No
No
 
Encoder type
N/A
N/A
Optical quadature
N/A
N/A
 
Encoder resolution
N/A
N/A
0.4
N/A
N/A
mrad
Stall torque
 
 
50
 
 
mNm
Holding torque
 
 
>50
 
 
mNm
Recommended operating range
 
 
0-25
 
 
mNm
Vacuum
No
No
No
10-7
10-7
torr
Operating voltage
 
 
42-48
 
 
V
Power consumption
 
 
7
 
 
mW/Hz
Shaft load, max
radial, 6.5 mm from mounting face
 
 
5
 
 
N
Shaft load, max
axial
 
 
2
 
 
N
Shaft press fit force, max
 
 
5
 
 
N
Mechanical size L x H x D
 
 
? x ? 
 
 
mm
Weight
65
68
80
65
70
g
Connector motor
JST BM05BSRSS-TB
JST BM05BSRSS-TB
Cable attached,
driver dependent
Soldered cable w. JST
05SR-3S
Soldered cable w. JST
05SR-3S
 
Material in motor housing
Non-magnetic
 
Operating temperature
-20 to +70
ºC

 

Data sheet LR23-50

Main dimensions LR23-50

CAD files (step) LR23-50

Motor performance

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.

Motor speed at 20 ºC no load

Waveform
Max feq. (Hz)
Speed range (mm/s)
Delta
3000
0–19 rpm (0–114°/s)

Rhomb
0–27 rpm (0–160°/s)
Controller PMD401 on the left and PMD301 on the right

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.

LR23-50 LEGS® Piezo Motor Starter Kit

Starter kits are available for the LTC450. Starter Kits are for evaluation purposes only with a max quantity of 3 kits/customer. You only pay for the motor.

Linear Non-Magnetic and Vacuum capable LL10D Piezo Motor
LEGS LT40 direct drive Piezo Motor Starter Kit

Do you need a free consultation or a starter kit?

Request a quote

This field is hidden when viewing the form
Country(Required)
This field is for validation purposes and should be left unchanged.