Society of Robots - Robot Forum
Mechanics and Construction => Mechanics and Construction => Topic started by: darkloaf on September 29, 2008, 06:07:03 AM
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Hey,
I am just about to start cad-ing my robot, and I'm having some troubles understanding my motors datasheet.
http://www.active-robots.com/products/motorsandwheels/stepper-motors/datasheets/103h546-0440.pdf
What unit are these measurements in? For example the motor bore is listed as ø5-0.013. What the devil does that mean?
Cheers,
Nick Deboar
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The units are milimetres. ø5-0.013 means the diameter is 5 milimetres and the -0.013 is the tollerance of machining, so the axle is 13 micrometres less of the nominal value, so it will mount with little effort to a ø5 gear.
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Great, cheers!