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1215 steel bushings
- Thread starter areyes84
- Start date
- Replies 12
- Views 1,670
It's 1215 material aka butter. It should last much much longer than 100 pcs.
What speeds and feeds are you running it at?
How many flutes does it have?
How much stock are you leaving for the reamer?
DouglasJRizzo
Titanium
- Joined
- Jun 7, 2011
- Location
- Ramsey, NJ.
There is a serious issue here. I have had off the shelf HSS or Cobalt reamers last thousands of pieces before needing attention.
Let's address a few things:
A) - How much are you leaving for reaming? Should be .008 to .015 and no more.
B) - Feed/speed. Too slow or too fast will wipe a tool out. Check with the tool maker. I'm thinking about 750 to 1000 rpm at about .008" per rev.
C) - Coolant. A must for me.
I run these all day every day. I use HSS-Co drills at around 115-130 SFM, Run the reamer at the same speeds weather its carbide or HSS. Carbide gives much better finishes. I leave as little as 004-.006 undersize all the way to .016 undersize.
1 Drill last me around 10k parts. HSS reamer breaks down around 7500-10k. Carbide reamers havent died on me yet going on 30k parts this year (many different sizes).
1 Drill last me around 10k parts. HSS reamer breaks down around 7500-10k. Carbide reamers havent died on me yet going on 30k parts this year (many different sizes).
Dan from Oakland
Titanium
- Joined
- Sep 15, 2005
- Location
- Oakland, CA
Why not a boring bar? Are the holes too deep?
michiganbuck
Diamond
- Joined
- Jun 28, 2012
- Location
- Mt Clemens, Michigan 48035
If the reamer ends are not even length then you may be cutting/dulling with only one flute.
looking at dull flute ends with a loop will tell.
Might be better off with a solid reamer HSS or carbide and fab up an ends sharpener (or just toss them when dull).
A very good/best end sharpener is one that holds the reamer through a bushing. You make bushings with the reamer so bushings coat next to nothing. Simple CRS bushing last a very long time.
Yes a between centers is also a good way to sharpen reamers.
looking at dull flute ends with a loop will tell.
Might be better off with a solid reamer HSS or carbide and fab up an ends sharpener (or just toss them when dull).
A very good/best end sharpener is one that holds the reamer through a bushing. You make bushings with the reamer so bushings coat next to nothing. Simple CRS bushing last a very long time.
Yes a between centers is also a good way to sharpen reamers.
Last edited:
1215 bushings
I am pre drilling to a dia. of .492. Then using a carbide reamer at 800 rpm, .010 p/r. The part is 2" long
I am pre drilling to a dia. of .492. Then using a carbide reamer at 800 rpm, .010 p/r. The part is 2" long
Double your rpm, keeping the same ipr if not bump up the feed a little.
Thank you. I will try doubling rpm.
DouglasJRizzo
Titanium
- Joined
- Jun 7, 2011
- Location
- Ramsey, NJ.
RJT
Titanium
- Joined
- Aug 24, 2006
- Location
- greensboro,northcarolina
Coolant at what concentration, or cutting oil?
michiganbuck
Diamond
- Joined
- Jun 28, 2012
- Location
- Mt Clemens, Michigan 48035
...with a .500 carbide inserted reamer.
If the ends are not near perfect so all blades/inserts are not all hitting/cutting then there is little you can do to make good tool life.
You can look at a dull/part-dull reamer end with a loop and see that all are or are not cutting.
Thin wall bushings may be distorting with the way you hold them
Quote Originally Posted by Ianagos View Post
Ok something has to be very wrong there. I think you could get better tool life from a cheap hss reamer.
Me: or a cheap carbide reamer.
If the ends are not near perfect so all blades/inserts are not all hitting/cutting then there is little you can do to make good tool life.
You can look at a dull/part-dull reamer end with a loop and see that all are or are not cutting.
Thin wall bushings may be distorting with the way you hold them
Quote Originally Posted by Ianagos View Post
Ok something has to be very wrong there. I think you could get better tool life from a cheap hss reamer.
Me: or a cheap carbide reamer.
