[Curt Henderson]

Hello Adam,

My comments were to confirm your difficulties in working with these motors and caution you on their sensitivity. They very inexpensive (aka Cheap!!) and very hard to work with. The gears that were designed to be used on these shafts were a Powdered Metal Material and very fragile during the pressing on the shaft and we found it very difficult to press the gears on consistantly. During our trials on the machine specifically designed for this purpose, we had buckets and buckets of bent and broken motors and gears. As I mentioned earlier, we had the motors on their side in a Vee Block to clamp them in place during the pressing operation. We then aligned the gear to the motor centerline for the pressing operation. We actually used a steel disc with holes in it to hold the gears during the index of the machine. Picture a Ferris Wheel where the gear is loaded at 12:00 position and then indexed to the 6:00 position for the pressing operation. When the gear is aligned to the motor shaft we used a pneumatic cylinder (3.5" dia bore double piston) that had a pin that was slightly smaller than the gear diameter, mounted to its rod that would push the gear out of the hole in the disc and onto the motor shaft. During the pressing process the motor would move slightly axially to contact the motor shaft to the stop anvil that would take the force of the pressing action.


Trying to do this consistantly with an arbor press could be done with some fixturing to align the motor centerline to the gear centerline during the pressing operation. If you had a vee block and mounted a plate to its end that had a hole in it to guide the gear while it is being pressed onto the shaft by a pin that is being pushed by the Arbor Press Ram should work with a high success rate.

Again hopefully this helps.