Are there dimentional limits for a two pole DC motor?
Are there dimentional limits for a two pole DC motor?
(OP)
I have been unable to locate any two pole DC motors that have a wound armature in excess of about three inches. Is their a technical reason for this? I would greatly appreceate a insight on this topic.
Thank you,
dpdooley
Thank you,
dpdooley





RE: Are there dimentional limits for a two pole DC motor?
Comparing a 2-pole motor with a similarly rated 4-pole motor, although the total field flux is the same, the flux carried by the outer case will be twice as big for the 2-pole meaning that the case must be twice as thick, twice as heavy. In fact it's worse than this, because the main field in the 4-pole can have less radial depth, making the casing bore smaller. The 2-pole machine will also have more wasted space between the main poles.