8MRL120-15 - High-Speed Precision Rotation Stage

High-Speed Precision Rotation Stage
Direct-Drive (Torque) Motor Rotation Stage

Ultra-high-speed rotation: 9000°/s (1500 rpm)

High position repeatability & high accuracy

Low runout & high load capacity

Compact design


Model 8MRL120-15-MEn
Kinematics & Feedback information
 Angular Range, deg 360
 Encoder Type Optical
 Encoder Model LEN3
 Encoder Resolution 1), deg 0.0000625
 Encoder Interface Differential RS422
 Internal Multiplier YES (optionally analog SIN/COS)
 Multiplication factor 200
 Encoder Grating Period, deg 0.05
 Reference Mark (Index) Yes
 Absolute Accuracy 2)
  Before Calibration, µrad / arcsec ±218 / ±45.00
  After Calibration, µrad / arcsec request
 Uni-Directional Repeatability, µrad / arcsec N/A
 Bi-Directional Repeatability (peak to peak) 2), µrad / arcsec ±7.30 / ±1.50
 Bi-Directional Repeatability (RMS) 2), µrad / arcsec ±2.90 / ±0.60
 Eccentricity 3), µm ±5.00
 Wobble 3), µrad / arcsec ±19.40 / ±4.00
 Maximum Velocity (no load, @300VDC) 4), deg/s / RPM <9000 / 1500
 Maximum Acceleration (no load) 5), deg/s2 / kRPM/s2 108000 / 18
 Maximum torque (continuous)5), Nm 5.4
 Limits Switches N/A
Load, Guiding & Transmission Information
 Design Type Torque Motor (Direct-Drive) Rotation Stage
 Linear Motor Model TM 105.34N
 Linear Motor Design Type Torque Motor
 Maximum Bus Voltage, VDC >300
 Load Capacity (Centrally Placed) 6)
  Horizontal, kg 40
  Vertical, kg 20
 Moving Mass 7), kg request
 Guiding System Crossed roller bearings
Material & Environment Conditions
 Housing Material Aluminum Alloy
 Housing Coating (Finish) Black Anodizing
 Environment Pressure Normal Atmosphere
 Operating Temperature, °C 20±2
Control, Communication and Cabling
 Recommended Controllers 8) ACS Products Line or 8SMC5-USB series
 Recommended Drivers 8) ACS Products Line or 8SMC5-USB series
 Recommended Power Supply 9) 2 phase / 3 phase source
 Recommended Communication Interface 11) EtherCAT / RS232 / USB / TCP-IP
 Cable Length, m 2 (other by request)
 Differential Outputs 10) On request
Accessories Information
 Base Plate for Mechanical Interface Not required
 Ox, Oy Stack Through angle bracket
Additional Details
 Dimensions of Moving Platform Ø, mm 90
 Central Aperture Ø, mm 15
 Overall Stage Dimensions (W x L x H), mm 151 x 122 x 62
 Measurement System Metric / Imperial (Base)
 RoHS Compliant
 Weight, kg 2.6

1) System can be delivered with standard analog SIN/COS encoder interface for personal interpolation or with integrated external interpolator (up to x200)

2) Absolute accuracy & Bi-Directional Repeatability, Wobble measurements processed by 11D-ALI-COL electronic autocollimator. Stages can be assembled with additional precision Please contact Standa for more information.

3) Eccentricity is measured by Zygo Michelson interferometer.

4) Maximum Velocity is electrically limited by encoder and driver CUT-OF frequency (125kHz in analog interface; 50MHZ in RS422 digital interface); maximum velocity is also limited by bearing.

5) Maximum Torque is limited by Drivers` Peak Current, Motors` Peak Current and External Load (inertia). Please contact Standa for explanation.

6) Load Capacity is limited by position of load. Please contact Standa for loading calculation.

7) Moving Mass is constant parameter of system which characterize m0 or inertia of unloaded system.

8) Recommended controllers & Recommended drivers can be optimized for a certain application. Please contact Standa for recommendation.

9) Recommended power supply depends on required duty cycle and load. Please contact Standa for recommendation.

10) Differential Outputs are available in passive (buffered) or active (modulated) way with LCMv2.

11) Scalar Control can be implemented with USB/ TCP-IP / RS-232 communication interface; for vector control we recommend to use EtherCAT.

Ordering Information
Model Availability
8MRL120-15 request

High-Speed Precision Rotation Stage