Rotor shaft and bearing kit -  Delco 10SI / 12SI alternator

- hardened and ground splined rotor shaft
- 17 mm bearing shaft diameter front and back
- Torrington needle bearing, std cup
- 1 thick, 1 thin sintered iron spacer bushing
- spring washer, (not needed if you use our non-loosening turbine hubs)
- standard 20 tpi threaded high strength nut (very hard to find, normally)

Note: slip rings are not needed when you change to a permanent magnet rotor
         (the permanent magnet replaces the excitation coil normally in the rotor;
           that means there are no coil leads, therefore, no slip rings)