Extruder for heated chamber? (1 reply)

I'm working on a printer to print ABS. I am planning for a heated chamber and from what I've read I need ~50-60°C. Quality is more important than speed so I don't mind toting an exrtruder around on the X carriage but I'm concerned heat build-up in the stepper would be a problem. Currently on my existing printer I use a belt reduction NEMA 14 and it works great and only gets warm to the touch, however, I'm not sure how it would cope being in an evironment that is much warmer. Bowden is an option but I will likely go with a 300mm x 300mm print bed so the bowden tube is going to get pretty long which would make print quality suffer.

Any ideas?