slip ring connector

motor+slip ring+plate	motor+slip ring connector	the parts	brass axel	groves in axel
plastic tube	wire	rubber ring	poke through	grove in ball bearing
align grove+wire	all wires	axel in platic tube	wires aligned	rubber ring to protect
hole for motor axel	screw to axel	outside plastic tube	4 threaded holes	grinding edge
slip over	terminal block