motor lathe

[Hummina Shadeeba]

http://www.integy.com/st_prod.html?p_prodid=565#.VRZSNyZHbCQ

This is a shockingly cheap lathe intended for motors! Any experience with something like this? I Wonder how big a motor it could cut

 

[Thud]

I have one very simular.
Its specificly designed for truing the comutator on a 540 sized brushed motor...so way too small for most of our applications.
[youtube]hrmTtlvQt8w[/youtube]

 

[Hummina Shadeeba]

Yup too good to be true... other than cutting the commutator it does nilch.

 

[Hummina Shadeeba]

http://www.harborfreight.com/7-inch-x-12-inch-precision-mini-lathe-93799.html?hftref=cj

says it cuts to .005 accuracy.
You can fit a 80mm cylinder in it so I guess an 80mm outrunner could be made if you have a stator.

 

[Thud]

HS,
are you shopping for a small lathe to make some parts with?
if so, I will steer you to a Brand name brand dealer who does better quality controll (i know-speculative ) but for sure ll the accesories will work & fit to the unit & replacmet parts & service is available.
http://grizzly12-px.rtrk.ca/products/7-x-12-Mini-Metal-Lathe/G8688

even less expensive on sale...but the catch is shipping.
the claim to .005" acuracy is a broad generlization....because I have seen very close tollerance work done on very sketchy equipment.

but for building small ellectric motors & like parts....any of these bench top lathes will perform once you understand all the tricks & set ups that acurate work requires.

i would avoid Harbor freight for such items....I love harbor freight for lots of things...but close tolerance machinery is not on that list :lol:

 

[Hummina Shadeeba]

thanks thud.
do you think I could cut the rotor and stator tube I have pictured below on this lathe? Can this lathe do mild steel? I don't know much about lathes and only used one a couple times but if I could cut this motor I'm in.
there's a bit of a back cut for the bearing seat and a wide threading...other than that I don't know what other obstacles this design might have to it's making.

everything is mm

3/4 horsepower seems pretty weak...maybe I would have to cut really slowly?

I think it's saying it can do a a 3inch cylinder in the chuck..so 76mm.