Page 33 - HOLE MAKING CATALOG p311-382

Troubleshooting USER GUIDE REAMERS

Problem Cause Solution
Hole too large • Use a floating reamer chuck or correct pilot hole
• Reamer or pilot hole not centered • Check size of reamer and correct if necessary
• Reamer too large • Change lubricant and increase coolant pressure
• Cooling / lubrication problems
• Replace the reamer
dnom • Worn reamer • Increase reaming allowance
Hole too small • Reaming allowance too small • Change lubricant and increase coolant pressure
• Cooling / lubrication problems
• Re-align or use a floating reamer chuck
dnom • Misalignment between pre hole
Conical hole and reamer centers • Re-align or use a floating reamer chuck
(larger bottom) • Secure the tool axially

dnom • Misalignment between pre-hole • Replace the tool
Conical hole and reamer centers • Re-align or use a floating reamer chuck
(larger entrance) • Increase coolant pressure
• Material jammed between reamer and • Change cutting parameters
hole in the upper hole section • Change cutting parameters or coolant conditions

dnom • Worn reamer
Poor surface finish • Misalignment between pre-hole

and reamer centers
• Problems with chip evacuation
• Incorrect cutting parameters
• Built-up edge

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