Hey, Ken; welcome! We don't have a lot of visitors here with, if I understood you correctly, pneumatic routers(?). Pretty much all electric routers are fan cooled, and in the case of electric motors, yeh, heat is a killer. Has it recently (ever) been torn down and completely serviced?
router running Hot temperature
Hello all, this is my first post so I hope I'm in the right place. Does anyone have experience with a Columbo 7.5HP Air cooled router> At 18000 rpm and no load it's running around 130f. I can't leave my hand on it for more than a few seconds. Is this a normal temp for this router? Other than that it is smooth and fairly quiet.
Thank you
Ken
Thank you
Ken
1 - 11 of 11 Posts
welcome Ken...Hello all, this is my first post so I hope I'm in the right place. Does anyone have experience with a Columbo 7.5HP Air cooled router> At 18000 rpm and no load it's running around 130f. I can't leave my hand on it for more than a few seconds. Is this a normal temp for this router? Other than that it is smooth and fairly quiet.
Thank you
Ken
is this the spindle you have???
you may have blocked air flow or a dragging bearing(s)
I'd suspect air flow...
electric drive AIR COOLED CNC spindle motor...Hey, Ken; welcome! We don't have a lot of visitors here with, if I understood you correctly, pneumatic routers(?). Pretty much all electric routers are fan cooled, and in the case of electric motors, yeh, heat is a killer. Has it recently (ever) been torn down and completely serviced?
Ahhhh...yes. I was just holding down the fort until you got here, Stick! 
If it's air driven then compressed air can get fairly hot. Do you have an air cooler in line just like a hydraulic system would have?
I forgot about the heated compressed air...If it's air driven then compressed air can get fairly hot. Do you have an air cooler in line just like a hydraulic system would have?
perhapes he's using heated air to cool w/...
According to what I read, you need it to warm up to around 100°F, before using, and then it should stay between 100° to 140° in use, measured at the lower bearing.
Cooling | Colombo USA
Cooling | Colombo USA
Hello Dan, thanks for your response. Sorry for confusion, it is electric with a fan but the fan is controlled by the spindle motor and not a separate motor.
I just had it repaired by Colombo and only have a 6 month warranty with a couple months left. I took possession of rebuilt in April but I'm just getting it set up now and so only a month roughly left. Without ever cutting anything with it but just warming it up slowly to 18,000 rpm is is very hot to touch. I have a laser thermometer that reads 130F and that seems high. Colombo states 130f is ok under load but seems high for no load but they say it wasn't that high when they repaired it. but I can't imagine anything changed in transit. I'm thinking I need to send it back
Is 130F high?
Thanks again
Kas
I just had it repaired by Colombo and only have a 6 month warranty with a couple months left. I took possession of rebuilt in April but I'm just getting it set up now and so only a month roughly left. Without ever cutting anything with it but just warming it up slowly to 18,000 rpm is is very hot to touch. I have a laser thermometer that reads 130F and that seems high. Colombo states 130f is ok under load but seems high for no load but they say it wasn't that high when they repaired it. but I can't imagine anything changed in transit. I'm thinking I need to send it back
Is 130F high?
Thanks again
Kas
It seems to have good air flow, obviously more flow the faster the spindle. So it seems from the comments 130 to 140 is not too hot?
Thank you
Ken
Thank you
Ken
It depends on how hot it gets under load. Bearings start failing at about 170F. The temp you're getting at no load sounds a bit high to me.
I worked with same cnc spindle .Hello all, this is my first post so I hope I'm in the right place. Does anyone have experience with a Columbo 7.5HP Air cooled router> At 18000 rpm and no load it's running around 130f. I can't leave my hand on it for more than a few seconds. Is this a normal temp for this router? Other than that it is smooth and fairly quiet.
Thank you
Ken
That one become hot also. maybe that is normal but it is better you check the neck and top bearings.
matt
1 - 11 of 11 Posts
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