Text version of the page

MM-3M-F/MM-4M-F Resolution Data Sheet

Linear Motion: 80 TPI Lead Screw

Max Travel Rate

2

Resolution

1

Inch permm perµinch perµm per Gearhead Ratiosecondsecondcountcount

16:10.260 6.6019.5313 0.496064:10.064 1.654.88280.1240256:10.016 0.411.22070.03101024:10.004 0.100.3052 0.0077

Travel rate calculations:

Output Shaft RPM= RPM of motor/Gearhead RatioDistance per minute= Output shaft RPM x Lead (0.0125 in., 0.3175 mm)Distance per second= Distance per minute/60Distance in millimeter= inch/39.37 x 10
-3 Distance in micrometer= inch/39.37 x 10
-6

Encoder resolution calculations:

Encoder counts per shaft revolution= 40 encoder counts x Gearhead ratioMinimum encoder count (inch)= Lead (0.0125 in.)/ Encoder counts per output shaft revolutionMinimum encoder count (millimeter)= Minimum encoder count (inch)/39.37 x10
-3 in.Minimum encoder count (micrometer) = Minimum encoder count (inch)/39.37 x 10
-6

Conversion:

1 inch (in)= 25.4 mm1 inch (in)= 25,400 µm1 millimeter (mm)= 39.37 x 10
-3 inch1 micrometer (µm)= 39.37 x 10
-6 inch1 deg (deg)= 3,600 arc-second1 arc-sec= 0.277 x 10
-3 degree

Notes

:

1) The lead values shown above in both travel rate and resolution calculations are for 80 (1/80) threads 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 10 mm motors used with both the rotary and linear stages incorporate dual channel, 10 position, magnetic encoders. Theresultant quadrature output is equal to 40 encoder counts per motor armature revolution.
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. National Aperture, Inc. -- 16 Northwestern Dr. -- Salem, N.H. 03079-4810 -- Tel. (800) 360-4598 -- (603) 893-7393 -- FAX (603) 893-7857 -- www.nationalaperture.com/www.naimotion.com