Hi Chris,
"Interesting" is right. Consider the rig new - there are no chips or other obstructions to airflow. The ambient temp is low and the load was the pulleys, gears and and unloaded lathe chuck - no cutting. The system was checked for binding - none found, all items are running smooth.
That temp rise is significant and suggests a poorly constructed motor or an underpowered unit. As time permits, I'll run a few more diagnostics, e.g., free-running motor.
Take care,
DBN
Chris <house582@...> wrote:
--- In 7x12minilathe@..., "druid_noibn" <druid_noibn@...>
wrote:
Hi All,
For those who might find it "interesting" ¨C I noticed the motor of
the HF 8x12-14 was a tad warm and thought a check was in order.
With a motor and ambient temp of 65F the lathe was turned on ¨C no
metal turning. The probe was located on the upper part of the
motor
housing, between the motor body and the junction box.
Without noting all of the readings, in the course of:
13 minutes ¨C temp rise 39.3F;
30 minutes ¨C 49.7F;
46 minutes ¨C 58.1F;
63 minutes ¨C 63F ¨C shut-down motor
66 minutes ¨C 65.7F
I didn't run the motor unloaded yet.
So the motor runs hot - an auxiliary fan might be in order.
Take care,
DBN
Interesting find you would think it would be cooler than that can not
have much air opening and also let chips in though. Maybe a small
comp fan and a fine screen to keep material out opie
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