425 oz in motors a bit hot

[oddatwl]

Hi all,

I have the 425 oz in motors from Xylotex pre-configured with Xylotex box and 1/8th micro step preconfigured.

I have a 10tpi machine. In mach3 steps per = 15,000 , vel = 8in/min, accel = 3 in/sec/sec.

The motors seem a bit hot. Are these settings reasonable to you all?

Do the motors have to be exposed to air to cool (I have plastic covers over them except 2 inches past the end jsut to keep chips and fluid out)?

Tanks!

[gmfoster]

Hi all,

I have the 425 oz in motors from Xylotex pre-configured with Xylotex box and 1/8th micro step preconfigured.

I have a 10tpi machine. In mach3 steps per = 15,000 , vel = 8in/min, accel = 3 in/sec/sec.

The motors seem a bit hot. Are these settings reasonable to you all?

Do the motors have to be exposed to air to cool (I have plastic covers over them except 2 inches past the end jsut to keep chips and fluid out)?

Tanks!

Stepper motors tend to run hot. Drivers that lower the current while not moving lower this temperature somewhat. I woould say thay I wouldn't want to enclose stepper motors unless I provided moving air. I am not sure if the drivers you use reduce current while not moving or not. The data sheet should say.

Garry

[ger21]

Your Mach3 settings have nothing to do with motor heating. Steppers are designed to run hot, usually up to 150°F+. You can try lowering the VREF and see if they run cooler, but you'll lose a little torque.

[monte55]

I have 4 495 steppers driving 3/4 acme screws on a 60x60 inch table running
approx 60 ipm and from the time I turn on the table, it's quite a while before
the steppers get warm and then not hot. Warm but you can keep your hand on them no problem I keep my shop about 64 degrees. I hope I wont have a problem when its 95 degrees in summer. If they get hot, I'll put fans on them
I guess. I'm using Xylotex 4 axis driver and their power supply.

[Zumba]

Aluminum heat sinks do wonders.

If they're not burning your hands, I wouldn't worry about though.

[Claude Boudreau]

My steppers were running quite hot, up until I upgraded my linear motion from drill rod with brass sleeve to linear bearings. The misalignement and friction although not very bad were enough restrictions to cause overheating.