jim r
Cast Iron
- Joined
- Aug 11, 2002
- Location
- Sinton, TX.
I am changing out the bad bearings in a Dunham closer. The inner bearing is
in fair shape. The outer one is like a steel wheel on a gravel road. After
pulling it apart, I find that the outer bearing had been changed out before
and they did not take the inner shield off. I think the shield blocked the easy
access of the oil droplets to the double row bearings. Now, I'll take my lumps
as well..... a number of short cycle jobs, not readjusting the closer pressure
for different jobs, not running the air during setups and wurst of all... not
running with a high enough air volume. I could work on most of those but I
have no interest in increasing the air volume. Where I set it, the compressor
comes on every five minute. With a second machine, even shorter.
Many of the bearing manufacturers list max RPMs when using oil or grease.
The rpm for grease will be lower then oil, but then, this lathe only tops out
at 4500.
So the question is, can I replace the oil lines with grease fittings? A shot or
two a day would certainly be cheaper then the compressor time. And quieter.
jim
in fair shape. The outer one is like a steel wheel on a gravel road. After
pulling it apart, I find that the outer bearing had been changed out before
and they did not take the inner shield off. I think the shield blocked the easy
access of the oil droplets to the double row bearings. Now, I'll take my lumps
as well..... a number of short cycle jobs, not readjusting the closer pressure
for different jobs, not running the air during setups and wurst of all... not
running with a high enough air volume. I could work on most of those but I
have no interest in increasing the air volume. Where I set it, the compressor
comes on every five minute. With a second machine, even shorter.
Many of the bearing manufacturers list max RPMs when using oil or grease.
The rpm for grease will be lower then oil, but then, this lathe only tops out
at 4500.
So the question is, can I replace the oil lines with grease fittings? A shot or
two a day would certainly be cheaper then the compressor time. And quieter.
jim