TL-2 Noisy Spindle
How many people with TL-2s have heard funny noises from the spindle? Sorry about the higly technical term 'funny' but I couldn't think of anything better. I guess also the query applies to people with TL-3s as well but not TL-1.
The 'funny' noise is a noise that the spindle makes sometimes; almost like something rattling.
The reason I ask is that I had my spindle checked for unusual vibrations because of a 'funny' noise and found I was not the only one hearing this kind of thing. The spindle checked out fine on a vibration analysis and the, provisional, diagnosis for the funny noise is that when the machine is shut down after been run for several hours it is warm (of course), the grease in the spindle bearings is soft and more fluid so it drains to the bottom of the bearing, the machine cools off and if you have a poorly heated shop like me it gets quite cold, then next time the machine is started the grease being unevenly distributed in the bearing makes the 'funny' noise until it has warmed up a bit and become evenly distributed.
The solution is to have a warm-up cycle; run at 500 rpm for a few minutes, then 1000, etc, up to full speed, similar to the warm-up on the mills.
Any comments?
An open mind is a virtue...so long as all the common sense has not leaked out.