Typically made of high-strength alloy steel or carbide, its structure includes an insert pocket, clamping mechanism (e.g., screws, lever-type), and a tool shank. Common types include external turning holders, internal boring holders, parting-off holders, and threading holders, tailored for diverse machining scenarios.
- High Rigidity Design: Optimized cross-sectional geometry minimizes vibration and enhances cutting stability.
- Precise Positioning: The insert pocket aligns strictly with the tool shank axis to ensure dimensional accuracy.
- Quick Tool Change: Modular design enables rapid insert replacement, reducing downtime.
- Wear Resistance: Surface coatings or specialized treatments extend service life.



| T | L1 | D | F | h | L | |||||
| SIGER0808A | GER**-A |
8 | 1.5 | 20 | 8 | 4.8 | 7.2 | 100 | L60M2.2x5 | T06 |
| SIGER1010B | GER**-B GER**-BR |
10 | 2.2 | 25 | 10 | 6.2 | 9 | 125 | L60M2.5*7 | T08 |
| SIGER1210B | 12 | 2.2 | 30 | 10 | 7 | 9 | 125 | |||
| SIGER1412C | GER**-C GER**-CR |
14 | 2.5 | 33 | 12 | 8 | 11.4 | 150 | L60M2.5*7 | T08 |
| SIGER1612C | 16 | 2.5 | 20 | 12 | 8.5 | 11.4 | 150 | |||
| SIGER1616C | 16 | 2.5 | 36 | 16 | 9 | 15 | 160 | |||
| SIGER2020D | GER**-D GER**-DR |
20 | 4.5 | 40 | 20 | 12.1 | 19 | 180 | L60M3*8 | T10 |
| SIGER2525D | 25 | 4.2 | 45 | 25 | 12.3 | 24 | 200 | |||
| SIGER2525E | GER**-E GER**-ER |
25 | 6.5 | 45 | 25 | 15.6 | 24 | 200 | L60M4*8.5 | T15 |
| SIGER3232E | 32 | 6.5 | 55 | 32 | 19 | 30.4 | 220 | |||
| SIGER4032E | 40 | 6.5 | - | 32 | 23 | 30.4 | 250 | |||
| SIGEL0808A | GEL**-A |
8 | 1.5 | 20 | 8 | 4.8 | 7.2 | 100 | L60M2.2x5 | T06 |
| SIGEL1010B | GEL**-B GEL**-BR |
10 | 2.2 | 25 | 10 | 6.2 | 9 | 125 | L60M2.5*7 | T08 |
| SIGEL1210B | 12 | 2.2 | 30 | 10 | 7 | 9 | 125 | |||
| SIGEL1412C | GEL**-C GEL**-CR |
14 | 2.5 | 33 | 12 | 8 | 11.4 | 150 | L60M2.5*7 | T08 |
| SIGEL1612C | 16 | 2.5 | 20 | 12 | 8.5 | 11.4 | 150 | |||
| SIGEL1616C | 16 | 2.5 | 36 | 16 | 9 | 15 | 160 | |||
| SIGEL2020D | GEL**-D GEL**-DR |
20 | 4.5 | 40 | 20 | 12.1 | 19 | 180 | L60M3*8 | T10 |
| SIGEL2525D | 25 | 4.2 | 45 | 25 | 12.3 | 24 | 200 | |||
| SIGEL2525E | GEL**-E GEL**-ER |
25 | 6.5 | 45 | 25 | 15.6 | 24 | 200 | L60M4*8.5 | T15 |
| SIGEL3232E | 32 | 6.5 | 55 | 32 | 19 | 30.4 | 220 | |||
| SIGEL4032E | 40 | 6.5 | - | 32 | 23 | 30.4 | 250 | |||

- Improved Machining Quality: High rigidity reduces surface waviness and dimensional deviations.
- Enhanced Efficiency: Quick-change design shortens auxiliary time, supporting continuous production.
- Cost Reduction: Reusable tool shanks with replaceable inserts lower overall costs.
- Versatility: Multiple specifications and angle configurations accommodate complex profile machining.
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