Cryo Rotary Motor (CRM)

HIGH TORQUE ROTATIONAL DRIVE FOR CRYOGENIC APPLICATIONS

  • Endless rotation
  • Integrated scanner functionality
  • High torque output
  • Compact and robust design
  • 20 mK to 375K, vacuum compatible
  • Materials: stainless steel, phosphor bronze
  • Moving parts non magnetic
  • Cryo Optical Encoder option “COE”
  • COE offers full 360 degrees range

Product description

The Cryo Rotary Motor (CRM) is a rotational drive with high torque output. An optical encoder can be fitted for closed loop control. In contrast to typical resistive based encoders it has no blind spots and can measure over 360 angular degrees. The moving parts are made out of nonmagnetic phosphor bronze to minimize interaction with external magnetic fields.

specsunitCRM1CRM1-COE
SYSTEM SPECIFICATIONS
Active axes1
Type of motionRotational
Coarse/scanning actuator *Piezo ceramic
Coarse RangedegEndless
Speed @ 293 Krev/min5
Speed @ 4 Krev/min1
Coarse step size @ 293 Kmrad (deg)0.15 – 0.75 (0.008 – 0.04)
Coarse step size @ 4 Kmrad (deg)0.1 – 0.25 (0.005 – 0.015)
Scan Range @ 293Kmrad (deg)0.6 (0.034)
Scan Range @ 4Kmrad (deg)0.15 ( 0.009)
Scanner sensitivity @ 293 K **mrad/V (deg/V)0.005 (0.0003)
Scanner sensitivity @ 4 K **mrad/V (deg/V)0.001 (0.00006)
Driving torqueNmm15
Load capacitygrams200
Operating temperatureK0.02 – 375
Main construction materialStainless steel, phosphor bronze
Massgrams170180
Dissipation @ 293KmJ/step0.59
Dissipation @ 4KmJ/step0.055
Encoder resolutionPPRN/A850
DRIVE ELECTRONICS
Controller/driverCAB-230(115), CADM(2), MCM
Encoder readoutN/AOEM2
* Coarse/scan positioning is both done with the CADM(2), not simultaneously
** 0-150V, 10 bits resolution, setpoint rate approx. 10Hz

CRM1: CRM1 incl. Scanner
CRM1-COE: CRM1 incl. Scanner and Cryo Optical Encoder

CRM in Operation in Cryo

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