Laser head tip getting extremely hot

[Fatmonk]

I have a pro style laser head with air assist, my tube is 60 watts (running at about 30 -40 percent power and 18/20 ma) The tip of the laser head gets extremely hot, is this normal or is it related to poor mirror / head alignment? Any advice would be appreciated.

[Tech_Marco]

Not normal. Seems like alignment issue
What focus lens are you using?
Make sure beam is not hitting to the barrel or the tip

Marco

[Fatmonk]

Hi Marco,

Thanks for the advice, will check alignment again. This might seem like a stupid question but the focus lens mirror is mounted with the convex side down? My lens size is F63.5 (ZNSE / 20 mm)

Regards Dean

[Tech_Marco]

The flat side should be facing down while curve side facing up is recommended.

Marco