Some background - my friend is retrofitting a cherry BP series one CNC mill with a new control. The original motors (NEMA 43-sized) used a very low resolution encoder, which we want to replace with a more modern optical encoder. The motor shaft, which extends from the rear of the motor, was originally threaded 10mm. Our plan is to fit a stub shaft over the threaded portion, extending the shaft and creating basically any diameter... probably to either 10mm or 3/8".
The motor has 3 mounting holes in a standard NEMA43 pattern for the encoders. We are looking for a recommendation on an encoder which can be directly mounted, or adapted.
Needed: Quadrature encoder for NEMA 43 mount, 1000 line, 5V, channels A/A~, B/B~, w/ index, ungated. I've always used Renco encoders up til now but their encoders are too small! Any hints/pointers to a suitable encoder would be appreciated, hopefully not ones which seem to cost $350+ each.
Thanks guys!!
added: These are brushed S.E.M. motors with tach. We won't be using the tach at all. Again, TY all.