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Construction Equipment Tech Hydraulics, Electronics, General Engineering, ect in constr equip |
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I finally made some time to work on a pump. I had an UMS pump that I wanted to convert to a belt drive. I have some other gears to try making my own pumps if this works out.
Here is what it looked like after I disassembled the UMS gear pump from the stock motor. ![]() ![]() First I faced the back and then made a bronze stepped bushing. I then made a shaft from 1/4 inch stainless rod. I turned it down to 2.31mm to press fit into the 2.27mm hole (.0015 inch difference) of the gear. You can see a similar shaft and bushing in the photo but those are ones that didn’t work out. I also made an outside collar for the pump housing to give more room for bolt holes, press fit and three 3mm bolts to hold it secure. ![]() ![]() Here is the bracket (made from 1x2 block - gotta love how much material a roughing endmill will remove) to hold the motor and gear pump. ![]() ![]() Here is the gear pump assembled and bolted to the bracket. ![]() ![]() Here is the pump shaft pulley (42t) - bearings on both ends. ![]() ![]() And finally with the 800 KV motor (35-48) and drive shaft pulley (14t, I also have a 16t for use with a larger 42-50 size motor) installed. Both shafts are dimpled for the set screws. ![]() ![]() ![]() All of the pieces ![]() And my DRO (showing the bolt circle pattern program) that made it possible (well, that and my lathe and mill). ![]() I hope to test it sometime this week. Richard Last edited by Vanisle; 12-18-2011 at 11:24 PM. |
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