CVCA – Cryo Voice Coil Actuator

An electromagnetic linear force actuator for cryogenic and UHV operation
previous arrow
next arrow
previous arrownext arrow
Slider

Receive our price list by email, no costs, obligations or spam. We only ask basic contact details to send it to.

Need help, any additional information or support?

Product description

The Cryo Voice Coil Actuator (CVCA) is an electromagnetic linear force actuator for cryogenic operation. The all-welded titanium construction with integrated power feedthrough pins hermetically encapsulates the coil making it also UHV compatible. The contactless nature of a voice coil actuator makes it especially suited for applications requiring smooth accurate positioning over the full stroke or for high lifetime applications like wafer probing.

  • Downloads
  • Specifications
  • Product options
  • Product configurations
  • Controller
  • Videos

specsunit symbol CVCA1
SYSTEM SPECIFICATIONS 1
Active axes--1
Type of motion--Linear
Actuator--Electromagnetic
Strokemms6 (-2,5 to +3.5)
Operating temperatureKTenv≈5 - 375 (lower limit set by superconductivity of titanium)
Main construction material--Titanium, nickel plated magnetically soft steel
Mass coil assembly (stator)gramsmstator41
Mass magnet assembly (mover)gramsmmover48
Radial clearancemm-0,35, both directions
Max. allowable coil temperature°CTcoil_max140 (180 wire specification)
Benchmark coil temperatures 2--10K50K77K300K (air)
Coil resistanceOhmR0.00430.180.433.58
Voltage at peak forceVVFp0.0090.350.817.06
Current at peak forc eAIFp2.081.921.881.5
Back EMF constantV/m/skBEMF3.834.174.264
Coil inductancemHL0,62 @ 100Hz
Force sensitivityN/Akf3.834.174.264
Actuator constantN/√Wka58.29.816.432.07
Max continuous force 3NFss854.53
Peak force 4NFp>8>886
Power at peak forceWPp0.0190.671.558.4
Power at max. continuous forceWPss0.0190.260.492.1
Power at 1N continuous forceW-0.00030.010.0240.23
Electrical time constant 5msτE1443.441,440,17
Mechanical time constant 6msτM0.0140.51.1410,7
Thermal resistance of coil assembly 7K/WRstator789139112.2
Thermal resistance of magnet assembly 7K/WRmover1.221.221.221.22
DRIVE ELECTRONICS
Controller/driver--Current amplifier
1 At zero position. 2 Actual initial coil temperature at 10K tests was approx. 50K because of thermal resistances, 10K values from analysis. 3 At 100K coil temperature rise.
4 Allowed for 10 seconds. Values ≤50K limited by used current amplifier. 5 L/R. 6 (mmover*R )/(kf*kBEMF).
7 Theoretical from FEA. Coil assembly is based on radiation between windings and conduction through bobbin.

There are no options available for this product 

CVCA1: Cryo Voice coil actuator 1

Compatible with industrial motion controllers.

There are no videos available for this product.

Price list

Please fill in your details to receive our full price list in your mail box.

We use cookies to ensure to give you the best experience on our website. If you continue to use this site we will assume that you are okay with it.