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  • Reamer speeds?

    I need to ream some 1/4" & 3/16" holes. Bought the reamers from MSC and don't want to ruin them. Are reamers a fast or slow tool?
    Plain ol Bill

  • #2
    Keep the speed moderately low, use lots of good quality cutting fluid and keep it clean.

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    • #3
      Very slow----in the lathe--bottom back gear, with LOTS of cutting oil/lubricant. Withdraw often and flush away the chips.

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      • #4
        http://www.pahltool.com/tech/reamerspeedfeed.htm

        this link has a chart for reamer speeds and feeds.

        should get you started

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        • #5
          Also...never turn a reamer backwards.

          I generally try to leave about 0.005" to 0.010" for the reamer to take out and run reamers around 200 rpm.

          ----------
          Try to make a living, not a killing. -- Utah Phillips
          Don't believe everything you know. -- Bumper sticker
          Everybody is ignorant, only on different subjects. -- Will Rogers
          There are lots of people who mistake their imagination for their memory. - Josh Billings
          Law of Logical Argument - Anything is possible if you don't know what you are talking about.
          Don't own anything you have to feed or paint. - Hood River Blackie

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          • #6

            When I ream I use an RPM 1/2 or less of drill RPM.

            ------------------
            Paul G.
            Paul G.

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            • #7
              Make sure you read the first sentence in SGW's reply.

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              • #8
                slow? uh-oh...

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                • #9
                  Personally, I always use the same RPM as the drill, but twice the feed...This is in a semi-production workplace...good results


                  brent

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                  • #10
                    NEVER TURN THEM BACKWARDS!!!!

                    ALWAYS USE A SPIRAL REAMER IF A SLOT IS INVOLVED

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                    • #11
                      What happens???

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                      • #12
                        spiral reamers are great for thru holes but they can push chips forward so for a blind hole I'd try 'n use a straight one....

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                        • #13
                          Spiral reamers are made for reaming holes with a keyway or other interruption. The spiral prevents the reamer from jamming in the slot.
                          Reamers are ground to cut in one direction only. Turning them backwards will dull the cutting edge right now.
                          If reaming a blind hole, withdraw and clear the chips frequently. Otherwise, you will have a poor finish or a hole with a broken reamer in it.
                          Don't throw your reamers all together in a drawer, but store them individually in the sleeves they came in.
                          Jim H.

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                          • #14
                            A rule of thumb from school 1/2 the speed and twice the feed of comperable size drill.

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