Integrating Encoder Into Gearbox

[asid61]

Originally Posted by InFlight

The the encoder is adjacent two 2.5 Inch OD CIM Motors that protrude 4.5 inches out the rear of the gearbox. Minimizing the encoder profile outside the gearbox provides no advantage, and is counter to having a more reliable gearbox system.

The mechanical specs for this encoder are on the website. Please take note of the hole tolerances. CAD is one thing; student repeatable machining of center holes to a 0.0003 inch tolerance on center is quite another.

According to the product page (link's broken) the maximum TIR allowed is 0.006", so there's a bit more breathing room than that. Still not much though. I think the 0.0003" is the encoder shaft relative to the encoder, otherwise anything less than an ABEC-5 bearing could be out of tolerances.