National Aperture, Inc. MM-3M-R Rotary Motorized MicroMini™ Stage National Aperture, Inc.
MM-3M-R Rotary Motorized
MicroMini™ Stage
Miniature Positioning Components for Industry and Laboratory
Including Fiber (Fibre) Optic and Optical Alignment Systems
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Features:
  • Low profile
  • Light weight
  • Limit Switches
  • 1 inch diameter table
  • Interchangeable gearheads
  • 10mm DC Servo Motor w/10 position encoder
  • 10 position Magnetic Encoder
Special Features:
  • Dual class 7 custom bearings for ultra-low axial/ angular runout
  • Multi-faceted connection interface
  • Many other gearhead options, easy change
  • Homing switch
Download a PDF version of the Stage Catalog
Download a PDF version of the MM-3M-R page from the NAI Catalog
Specifications:  
  MM-3M-R MM-3M-RA MM-3M-RA+
Repeatability: 15 arc-sec* same same
Homing repeatability: 60 arc-sec* same same
Accuracy: (linearity) 80 arc-sec* same same
See diagram for an illustration of A, B, C, D
A. Axial Wobble
(axial angular long range repeatability)		 60 arc-sec 2 arc-sec 2 arc-sec
B. Axial Angular Deviation 60 arc-sec 60 arc-sec 2 arc-sec
C. Planar shift, total 1.2 µm 0 0
D. Eccentricity (runout including bearing mount) 3 µm 3 µm 3 µm
 
Direct Top Load: 2 kg axial 0.5 kg axial 0.5 kg axial
Tilt Load: 5 kg - cm (70 in. - oz) 1.0 kg - cm (14 in. - oz) 1.0 kg - cm (14 in. - oz)
Torque Load: 850 g - cm (12 in. - oz) 425 g - cm (6 in. - oz) 425 g - cm (6 in. - oz)
Gearhead ratio: 64:1 (standard) 16:1 same same
Speed: (low load) 4 RPM 16 RPM** same same
Encoder Conversion: (arc-sec/count) 6.3281 25.3124 same same
Gearhead Backlash: ~1 mrad‹ ~4 mrad‹ same same
Rotor Stall Torque: 200 in.-oz‹‹ 50 in.-oz‹‹ same same
Rotor backlash: (preloaded) 0 same same
Weight: 76 grams same same
Vacuum Compatibility: 10-3 Torr standard, higher per request same same
Worm ratio: 80:1 same same
Travel Range: unlimited same same
Stage Body Dimensions:
(L x W x H)		 2.86 x 1.43 x 0.59 (inch)
72.64 x 36.32 x 15 (mm)		 same same
Motor: 10mm diameter, 6-12 VDC servo, brush type
*Encoder resolution must be added based on the gearhead: 64:1 add ±12 arc-sec, 256:1 add ±3 arc-sec 1024:1 ±0.75 arc-sec (all approximated)
**A higher gear ratio means a lower speed. Higher speeds (lower ratio) can be used, but at the expense of resolution and load/torque capacity.
Dependent on gear ratio, and can be compensated in software without overshoot.
Dependent on gear ratio and worm ratio.
Note: The MM-3M stages are designed for peak performance at low loads: ex; 60g, less than 2 inches off axis.
Diagram:
Rotary Translation Stage
Description MM-3M-R MM-3M-RA MM-3M-RA+
A. Axial Wobble (axial angular long range repeatability) 60 arc-sec 2 arc-sec 2 arc-sec
B. Axial Angular Deviation 60 arc-sec 60 arc-sec 2 arc-sec
C. Planar shift, total 1.2 µm 0 0
D. Eccentricity (runout including bearing mount) 3 µm 3 µm 3 µm
Direct Top Load: 2 kg axial 0.5 kg axial 0.5 kg axial
Tilt Load: 5 kg - cm
(70 in. - oz)		 1.0 kg - cm
(14 in. - oz)		 1.0 kg - cm
(14 in. - oz)
Resolution Data Rotary Motion:
Link to Connection Specifications for 10mm motor
Link to Resolution Data Sheet for 80:1 wormdrive,10 position encoder, 6v HT motor
Link to Resolution Data Sheet for 80:1 wormdrive,10 position encoder, 6v motor
Link to Resolution Data Sheet for 80:1 wormdrive, 12 position encoder, 6v HT motor
MM-3M-R 80:1 Worm drive Ratio
    Resolution1 Max Travel Rate2
Gearhead Ratio Final Output Deg. / per count arc-sec/ per count Deg/sec
16:1 1,280:1 0.00703125 25.3125 3.74
64:1 5,120:1 0.00175781 6.3281 23.44
256:1 20,480:1 0.00043945 1.5820 5.86
1024:1 81,920:1 0.00010986 0.39950 1.46
Notes:
1) The lead values shown above in both travel rate and resolution calculations, are for 80 (1/80) Thread per Inch (TPI) leadscrews. For a 40 TPI leadscrew, substitute 0.025 inch lead.
2) Max travel rate calculated with motor armature running at a maximum speed of 20,000 RPM
3) The 10mm motors used with both the rotary and linear stages incorporate dual channel, 10 position, magnetic encoders. The resultant quadrature output is equal to 40 encoder counts per motor armature revolution.
Travel rate calculations:
Output Shaft RPM = RPM of motor / Gearhead Ratio
Distance per minute = Output shaft RPM x Lead (0.0125 in, 0.3175mm)
Distance per second = Distance per minute / 60
Distance in millimeters = inch/39.37 X 10-3
Distance in micrometers = inch/39.37 x 10-6
Encoder resolution calculations:
Encoder counts per shaft revolution = 40 encoder counts x gearhead ratio
Minimum encoder count (inches) = Lead (0.0125 in.) / Encoder counts per output shaft revolution
Minimum encoder count (millimeters) = Minimum encoder count (inch)/39.27 x 10-3
Minimum encoder count (micrometers) = Minimum encoder count (inch)/39.37 X 10-6
Conversion:
1 inch (in.) = 25.4 mm
1 inch (in.) =25,400µm
1 millimeter (mm) = 39.37 x 10-3in.
1 micron (µm) = 39.37 x 10-6 in.
1 degree (deg) = 3,600 arc-sec
1 arc-sec = 0.277 x 10-3 deg
Link to Connection Specifications for 10mm motor
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PRICING:
PART# TRAVEL STAGE BODY (L x W x H) PRICE
MM-3M-R unlimited 2.86 x 1.43 x 0.59 (inch)
72.64 x 36.32 x 15 (mm)

$2100.00

MM-3M-RA unlimited 2.86 x 1.43 x 0.59 (inch)
72.64 x 36.32 x 15 (mm)		 $1930.00
MM-3M-RA+ unlimited 2.86 x 1.43 x 0.59 (inch)
72.64 x 36.32 x 15 (mm)		 $2170.00
For our International Customers we have a link to Universal Currency Converter
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The information contained in this data sheet is subject to change without notice.
Critical dimensions or specifications should be verified with our technical support staff.
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National Aperture, Inc. ©Copyright 1996-2010 National Aperture, Inc. - All Rights Reserved
MicroMini ™ Stage is a trademark of National Aperture, Inc.
National Aperture, Inc. • 16 Northwestern Drive • Salem, NH 03079-4810
800-360-4598 • 603-893-7393 • FAX 603-893-7857