Somta - page 89

79
Apply an adequate supply and the correct type of lubricant
to the cutting area.
(d) Possible Cause
Incorrect rake angle.
Solution
Use the recommended tap for the material.See page 51/54.
Tap binding in the hole
(a) Possible Cause
Using the incorrect tap.
Solution
Use the recommended tap.See page 51/54.
(b) Possible Cause
The drilled hole is too small.
Solution
Use the recommended drill size.See page 55/61.
(c) Possible Cause
Lack of / or the wrong type of lubricant.
Solution
Apply an adequate supply and the correct type of lubricant to
the cutting area.See page 63/65.
(d) Possible Cause
The flutes are clogged with chips.
Solution
Use a spiral point or a spiral flute tap.
(e) Possible Cause
Incorrect rake angle.
Solution
Use the recommended tap for the material.See page 51/54.
Flutes clogged with chips
(a) Possible Cause
Using the incorrect tap.
Solution
Use a spiral point or spiral flute tap.
(b) Possible Cause
Lack of / or the wrong type of lubricant.
Solution
Apply an adequate supply and the correct type of lubricant to
the cutting area.