Excessive Reamer Wear

REAMING – EXCESSIVE REAMER WEAR OR BREAKAGE:

The following is a list of items to consider that may adversely affect reamer life or in some cases, damage the reamer.

• Misalignment creates a bell mouth condition and premature wear.
• Lack of chip space in the flutes.
• Inconsistent material condition.
• Dirt or burs in the holding collets or spindle.
• Over or underfeeding/speeding.
• Lack of proper lubrication.
• Bottoming out in blind holes.
• Leaving too little/too much stock to remove.
• Poor hole quality.
• Improper regrinding.
• Careless handling of the reamer.
• Reamer chatter.
• Lack of rigidity of the set-up.
• Wrong reamer design for the application.