What stepper motor to use in heated chamber I want to build a 3D printer with a heating chamber of around 90&nbsp;&deg;C with build area 200x200x200&nbsp;mm. I have never build a CoreXY system, so my design is currently an XY system with moving X motor (mounted on Y). Since it has a heating chamber I can't use normal stepper motor (there's a way, but I have to provide forced air cooling like NASA did, or water cooling). Extruder is Bowden type. I have already sourced almost all components, but I'm stuck at choosing the motor.

I could find high temperature stepper motor in India (that's where I'm from), but it cost too much. I found one at the Visionminer website, they're the dealers for Intamsys printers, which has a chamber of 90&nbsp;&deg;C and they are providing replacement stepper motors as well.

Comparing the cost, the motor I found in India costs three times as above. Even with shipping I will save a lot. But one issue is they're not providing any details about torque and current rating. There's one image in the website and it says,

MOONS STEPPING MOTOR
TYPE 17HDB001-11N
60904162 18/04/12


I thought it might be a MOONS motor, so I contacted them, no reply so far. I tried to find the motor by part number, but failed. I tried mailing Visionminer as well.

Anyone have any idea which motor is this? or know any high temperature motors?

Also they use Gates belts, which is rated for 85&nbsp;&deg;C. How reliable will it be in 90&nbsp;&deg;C chamber?
"Since it has a heating chamber I can't use normal stepper motor"  Sure you can, the interior doesn't get all that warm unless you really seal it up tight, and that's not really needed.  I have an enclosure around my 200x200x200&nbsp;mm MIGBOT (early Prusa clone with direct drive extruder), printing PLA with 60&nbsp;&deg;C bed, the interior only gets a few degrees warmer.  The motors can take a lot more heat than you think they can.

I have a couple pictures in this thread.

The front &amp; back panels are 18x24 inch polycarbonate from Home Depot, I 3D printed the corner brackets, and added a couple of pieces of wood for some stiffness. The entire front hinges up. The top is 24x24&nbsp;inch, and the back 6" hinges up to access the SD card that is on the display/control panel.