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Topic: 11mm and 12mm rotary encoders? (Read 2 times) previous topic - next topic

liudr

I wonder if someone knows the answer to this probably obvious question. I have see on digikey.com 11mm rotary encoders and 12mm rotary encoders. I wonder where that 11mm or 12mm comes from:

Datasheets:

http://www.bitechnologies.com/pdfs/en11.pdf

http://www.bitechnologies.com/pdfs/en12.pdf

Besides some apparent different in the options (pulse per revolution, push button, shaft type and shaft lengths) the foot print is almost identical, with the 12mm a bit wider in one dimension. Were there 11mm 12mm names historical or do they refer to something I obviously didn't catch? Thank you!

John_S

It appears that their width is 11.7mm and 12.4mm, respecively. That would be my guess how they got their name.

liudr

I noticed that too. Kind of superficial difference. "Hey, we have two types of rotary encoders, they kind of differ only by 10 percent in a minor dimension". Should be other reason?!

MarkT

For potentiometers the normal dimension to use is the shaft diameter.  Knowing what sized hole to drill in the front panel
is also useful.
[ I won't respond to messages, use the forum please ]

liudr

Borh series have 6mm diameter shafts.

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