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Unread 29-01-2004, 12:57
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Raul Raul is offline
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Re: window motor spec sheet confusion

Here is something that adds to the confusion: The spec says it has a pitch diameter of 20.2184mm. This equates to .796 in. So if you do the standard calc for gears (NT/ PD = DP) you get: 9 / .796 = 11.3 Diametral Pitch! Huh!

So, what is going on here. I guess we should ignore the 20.2184 number?
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Warning: this reply is just an approximation of what I meant to convey - engineers cannot possibly use just written words to express what they are thinking.