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  1. PopeyeTheSailor

    Why use a step motor?

    I would like to know why one would choose to use a step motor over another technology i.e. DC servomotor, Brushless DC servomotor, etc. My understanding of the advantage of a step motor (dated by about 25 years) was the ease of controlling motion/position without shaft position feedback. When...
  2. PopeyeTheSailor

    Long life bearing system

    How about a bearing system that will be expected to last a minimum of 25 years under the following conditions: •Preloaded ball bearings •Bearing ID will be 2mm with typical OD for this size (~6mm) •Radial load on bearing = 0 to 5 grams (depending on orientation during operation) •Axial load...

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