Pictures of motor
I found this link for google search “electrocraft 0642 09 030” (supplier is asking $500.00 for this replacement part)
Replacement motor for HAAS cnc
To me, there doesn’t appear to be $500.00 of hardware here - but I’m cheap. If they have a contract with HAAS, then can probably charge $5,000 for a fan motor since their customers are at the mercy of parts repair to get their machines back run again. It’s not a spindle motor, that thing is about 12" diameter and needs a hoist to lift. Probably a servo to drive cross slide, material feed, turret, or otherwise.
I searched around electrocraft website after an hour, and got lost in all the PDF documents and crapola about how great electrocraft is and how wonderful the company is to do business with. I just want to look up a part number in their database, and not sign up to have a sales-person call me about price quotes for a 10,000 pallet shipment of custom motors.
There are 4 spots to unscrew and replace the brushes. I did not open them to inspect the brush size - but I will do that if anyone is actually interested. The plastic screw is 16mm or .615" (battery in my calipers going dead).
Double output shafts, 1/2" (12.71 mm) about 3/7" (19mm) long.
Test 2-leads at idle no motion:
5.5 ohm resistance at idle no motion. 1/4 turn, returns same 5.5 ohm resistance value. Same for 1/2 turn. 3/4 turn meter settles down at 5.3 ohms. I turned it one more time about 1/4 way and now resistance is 6.4 ohm. turn a little more 6.0 ohm, then settle down to 5.2 ohm. I am using a cheap handy portable digital multimeter.
Test one lead to Ground wire connected to shell:
54.2 ohm. turn 1/8: 53.8 ohm. turn 1/4: 53.9 ohm turn 1/4: 54.0 ohm. 1/8 turn: 43.8 ohm. 1/8 turn: 54.1 ohm.
I hook up a 6-cell lithium ion battery pack, 24 volts. The motor PACKS A WOLLOP. The motor spins strong - and quiet. I tried using my fingers clamp to slow it down, and definitely has no intention to do that (yes I know, it’s not safe - I’ve got it clamped down, and there’s no sharp edges). I tried using some paper towel and slow it down with my hands, and it keeps on trucking. I did not test the RPM yet, I have to make a wheel or something for my sensor to pickup in order to get the rpm. Feels low rpm I guess 300 maybe ?? Not sure.