TG_SFC_US-EN

ALLIED MACHINE & ENGINEERING | RECOMMENDED CUTTING DATA

Troubleshooting Guide

Oversized Hole • Reamer is running eccentric to the center of the machine spindle

Use modular system with radial adjustment

• Excessive misalignment causing reamer to cut on back taper

Fix the misalignment

• Material buildup on cuƫng edges

Replace the coolant or change the cuƫng speed

• Reamer diameter is too large

Use smaller reamer or regrind exisƟng reamer

Undersized Hole • The reamer diameter is too small

Use larger reamer

• The reamer diameter is worn

Expand, regrind, or replace the reamer

• The coolant is not suitable

Replace the coolant

• Stock allowance is too small • The cuƫng speed is too low

Increase the stock allowance

Increase the cuƫng speed

Tapered Hole • Excessive misalignment

Correct the misalignment

Burr at Hole Entry • Excessive misalignment

Correct the misalignment

Hole is Not Straight • Concentricity and alignment error between the workpiece and the tool

Correct the misalignment and use the

modular system with radial adjustment • Asymmetrical cuƫng or angled surfaces

Create a chamfer on the lead-in

Poor Hole Finish • One cuƫng edge is chipped

Regrind the reamer

• The lead-in is irregular Regrind the reamer • Back taper on the cuƫng edge is too great

Regrind the reamer

• Excessive misalignment

Correct the misalignment or use the modular system

• Cuƫng data is not correct

Verify the cuƫng data

• Poor chip evacuaƟon

Verify the coolant volume and pressure or use through-tool coolant

Reamer Creates Excessive Torque Loading • Back taper on the cuƫng edge is too small

Regrind the reamer

• The radially ground land is too wide

Regrind the reamer

• The coolant is not suitable

Replace the coolant

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