SBE PNP head
PNP head, works good. mounts on Z axis of CNC routers, but could be converted.
hose is wrapped around the shaft, limit switch is hit by the set screw that attaches to the motor shaft. fancy coding makes it never have to turn more than 180 degrees. motor floats on long mounting bolts, so if you overdrive Z it will just move up. weight holds it down normally.