[How do I?] Removing the 208 motor and installing a 115v motor

Denisj said:
- Where to start... The belt drive has a shot bushing. The previous owner just moved the belt over 1 pulley on one shaft and not he other to make up for the worn belt and bearing. The angle of the belt knife edged one of the pulleys.
- The ways look like they were used as an anvil. Lots of knocks and scars, but magically the carriage is not loose near the chuck
- The gearbox in the carriage is missing teeth
- The tailstock is hammered...literally. not sure how or why that happens and the ways near the tailstock have galling. Have you ever seen galling on ways!
- It has been in a brake repair shop for the last 500 years with no maintenance and and thick layer of fine silt grinding paste all over it. Add to it a long run of short time employees abusing it.
It is perfect for what I need it for. Accuracy is not a concern. Just turning and burnishing. I think thread cutting is no longer an option. It looks like the gear drive for the lead screw is seized. I think it may be the white lithium grease and 500 years of metal and dust that turned into an adhesive.
Hey...it was free...I am happy with that.
Click to expand...
Ah, dang. A lathe sitting near a brake drum/rotor 'turner' - cast iron dust all over and never a lick of lube, despite being in a repair shop.
The V-ways don't look too bad in the picts. The galling there at the end will need a fine stoning, no lube there for sure.
The bushing should be repairable.
Then we just have to find you some gears.
 
I found another motor, but this one is 3450 RPM instead of the 1725.
It is 1.5hp 115v but 22 amps! I was thinking about using a router speed controller I have but that controller is only rated at 15amps.
What I can't verify is the whether or not the switch on the lather for the motor control is able to handle the 22 amps.

is 3450 way too fast?
Is there a speed controller that will not burn up with a 22amp load?
Thanks again for all the help
 

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Unfortunately you won't be able to use a speed controller on that motor, and I would definitely run it on 240v not 120
Mark
 
3450 is way too fast


here is a link for my RPC design
www.hobby-machinist.com

Rpc simple design unbalanced

Rpc simple design Here's a simple plan for an unbalanced 220/240 v single to 3 phase converter. this design will start ANY 3 phase motor of ANY horsepower with a change of start capacitors! keep in mind,the contactor coil is 220v in this design, adjust coil voltage for high voltage use(480v)...
www.hobby-machinist.com www.hobby-machinist.com
 
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