Forming taps: general concepts and application solutions

Problem

Cause

Solution

Thread produced is too small

• Tapping size hole diameter too large

Select correct tapping size hole diameter according to table

Thread overformed

• Tapping size hole diameter too small

Select correct tapping size hole diameter according to table

Thread Surface not according to requeriments

• Cold welding on the tool

Increase oil content in lubricant or apply neat oil

Tool life insufficient

• Lubricant with too little oil content

Increase oil content in lubricant or apply neat oil

• Lubricant with too little oil content

Increase oil content in lubricant or apply neat oil

• Tapping size hole diameter too small

Select correct tapping size hole diameter according to table

• Cutting speed too high

Adjust cutting speed

• Lubricant soiled

Check filtration

Tool breakage

• Lubricant with too little oil content

Increase oil content in lubricant or apply neat oil

• Tapping size hole diameter too small

Select correct tapping size hole diameter according to table

• Incorrect tool clamping

Check tool clamping