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Tool Holders / Threading Milling Toolholders
ATM-C
9 sizes available · 8 specification fields
ATM-C is a thread milling cutter that takes 80° rhombic (C-type) inserts. It is listed here in 9 sizes, Ø14–43 mm cutting diameter, right-hand versions, each with full specifications and a dimensioned drawing. Typical use: milling internal or external threads in one helical pass.
Insert compatibility
This family is built for the following insert designations (as listed in the catalogue data). The exact size in each row of the table below is in the Insert designation column.
- C14
- C21
- C30
Specifications
| Product code | Insert designation | Cutting direction (hand) | Connection diameter (mm) | Functional length (mm) | Cutting diameter (mm) | Head length (mm) | Effective cutting edges | Depth of cut, maximum (mm) |
|---|---|---|---|---|---|---|---|---|
| ATM-C14-D14-W20-L100-Z01-H | C14 | R | 20 | 100 | 14 | 25 | 1 | 14 |
| ATM-C21-D18-W20-L100-Z01-H | C21 | R | 20 | 100 | 18 | 30 | 1 | 21 |
| ATM-C21-D21-W25-L125-Z01-H | C21 | R | 25 | 125 | 21 | 40 | 1 | 21 |
| ATM-C21-D25-W20-L125-Z01-H | C21 | R | 20 | 125 | 25 | 30 | 1 | 21 |
| ATM-C21-D28-W25-L90-Z01-H | C21 | R | 25 | 90 | 28 | 30 | 1 | 21 |
| ATM-C21-D38-W32-L90-Z03-H | C21 | R | 32 | 90 | 38 | 30 | 3 | 21 |
| ATM-C21-D38-W32-L120-Z03-H | C21 | R | 32 | 120 | 38 | 30 | 3 | 21 |
| ATM-C21-D43-W32-L90-Z03-H | C21 | R | 32 | 90 | 43 | 30 | 3 | 21 |
| ATM-C30-D29-W25-L150-Z01-H | C30 | R | 25 | 150 | 29 | 50 | 1 | 30 |
Column codes
- Insert Code — Insert designation
- Product Direction — Cutting direction (hand)
- DCON — Connection diameter (mm)
- LF — Functional length (mm)
- DC — Cutting diameter (mm)
- LH — Head length (mm)
- ZEFP — Effective cutting edges
- APMX — Depth of cut, maximum (mm)
Dimensions in millimetres unless noted. Values are the manufacturer's published figures.
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