Page 852 - Ceratizit Catalog

TC - threading
C247
Basics of threading

Differences between full and partial profile inserts

Full profile insert
Thread profile height
Total depth of cut + The entire thread profile including the external dia. is
machined (excess material 0.04 - 0.1 mm over finished
diameter) + high profile precision
+ Increased tool life thanks to larger point radii
+ Burr-free thread
Excess material 0.04 - 0.1 mm
- One insert per pitch

Partial profile insert
Thread profile height
+ One insert for several pitches
- Therefore the thread profile does not exactly meet the
standard
- The external dia. (or the core dia. in case of internal
threads) is not machined
Finished thread Ø

Approach selection

Parting and grooving / Technical information
Radial approach Flank approach Alternating approach

+ Conventional lathes + Preferred approach on + With pitches > 4 mm
+ With pitches < 2 mm CNC-machines + Long chipping materials
+ With short chipping materials + With pitches from 2 to 4 mm + Uniform insert wear
- Reduced chip control + Long chipping materials + Long tool life
+ Good chip control + Good chip control
- More complex NC programming