GST series parting and grooving tools
GST series cover GSTC and GSTS series products, are made by precision grinding and have high dimensional accuracy and surface quality. Matched with a variety of tool holders, they are particularly suitable for parting and slotting of small parts.
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- Feature
- Application
- Application case
Insert Features
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GSTC/S- Parting and grooving for small parts
● Sharp cutting edge, large front angle design, light and fast cutting, ensuring the surface quality of the machined parts; ● Sharp grinding type cutting edge; ●Special mounting angle for stable tool clamping. |
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GSTT- Threading for small parts
●Sharp edge, large front angle design, light cutting, ensure the surface quality of the machined parts; No width and small arc design for better roughness. ●Mainly 55° and 60° general-purpose thread inserts for thread turning of small parts. |
Grade introduction
Specialized grades for small parts, covering steel, stainless steel, and other materials.
PVD: GAT7115 GAT7125
Shank feature
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GST- Parting, grooving and Threading for small parts
●Matching standard GST and GST-RS (sub-spindle) toolholders; ●The tool square matching 10\12\16 three kinds; |
Blade:
GSTT Recommended values for the number of thread strokes and radial feeds
| Thread type | spiral pitch | Ordering Code | Nose radius R（RE） |
Cutting depths （mm） |
Total
passes |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| mm | ||||||||||||||||
| metric thread | external thread | 0.20mm | GSTT 3R/L A/B6000 | Max 0.05 flatten |
0.15 | 4 | 0.06 | 0.04 | 0.03 | 0.02 | ||||||
| 0.25mm | 0.19 | 4 | 0.07 | 0.06 | 0.04 | 0.02 | ||||||||||
| 0.30mm | 0.23 | 4 | 0.08 | 0.07 | 0.06 | 0.02 | ||||||||||
| 0.35mm | 0.27 | 5 | 0.08 | 0.07 | 0.06 | 0.04 | 0.02 | |||||||||
| 0.40mm | 0.30 | 5 | 0.10 | 0.08 | 0.06 | 0.04 | 0.02 | |||||||||
| 0.45mm | 0.34 | 6 | 0.10 | 0.08 | 0.06 | 0.04 | 0.04 | 0.02 | ||||||||
| 0.50mm | GSTT 3R/L A/B6000 | 0.38 | 6 | 0.10 | 0.10 | 0.07 | 0.05 | 0.04 | 0.02 | |||||||
| GSTT 3R/L A/B60005 | 0.05 | 0.33 | 5 | 0.10 | 0.10 | 0.07 | 0.04 | 0.02 | ||||||||
| 0.60mm | GSTT 3R/L A/B6000 | Max 0.05 flatten |
0.45 | 7 | 0.10 | 0.10 | 0.08 | 0.06 | 0.05 | 0.04 | 0.02 | |||||
| GSTT 3R/L A/B60005 | 0.05 | 0.40 | 6 | 0.10 | 0.10 | 0.08 | 0.06 | 0.04 | 0.02 | |||||||
| 0.70mm | GSTT 3R/L A/B60005 | 0.05 | 0.48 | 6 | 0.10 | 0.10 | 0.10 | 0.10 | 0.06 | 0.02 | ||||||
| 0.75mm | 0.05 | 0.52 | 7 | 0.10 | 0.10 | 0.10 | 0.08 | 0.07 | 0.05 | 0.02 | ||||||
| 0.80mm | 0.05 | 0.56 | 7 | 0.10 | 0.10 | 0.10 | 0.10 | 0.08 | 0.06 | 0.02 | ||||||
| 1.00mm | GSTT 3R/L A/B60005 GSTT 3R/L N6001 |
0.05 | 0.71 | 8 | 0.15 | 0.15 | 0.12 | 0.10 | 0.08 | 0.06 | 0.03 | 0.02 | ||||
| 0.10 | 0.66 | 7 | 0.18 | 0.15 | 0.12 | 0.10 | 0.06 | 0.03 | 0.02 | |||||||
| 1.25mm | 0.05 | 0.90 | 9 | 0.20 | 0.18 | 0.13 | 0.10 | 0.10 | 0.07 | 0.05 | 0.05 | 0.02 | ||||
| 0.10 | 0.85 | 8 | 0.20 | 0.18 | 0.13 | 0.10 | 0.10 | 0.07 | 0.05 | 0.02 | ||||||
| 1.50mm | GSTT 3R/L N6001 | 0.10 | 1.04 | 10 | 0.20 | 0.18 | 0.14 | 0.12 | 0.10 | 0.10 | 0.08 | 0.05 | 0.05 | 0.02 | ||
GSTT Recommended cutting speed
| ISO | workpiece material | Hardness (HB) | series | grades | linear velocity Vc(m/min) |
| P | steel | ≤300 | GST | GAT7115 | 120(60-180) |
| GAT7125 | 90(40-150) | ||||
| M | stainless | ≤300 | GST | GAT7115 | 100(60-150) |
| GAT7125 | 80(40-130) |
GSTC/S Cutting parameters and recommended values
| ISO | workpiece material | Hardness (HB) | series | grades | linear velocity Vc(m/min) | Grooving feed
f1(mm/rev) |
| P | steel | ≤300 | GSTC | GAT7115 | 120(60-180) | 0.02(0.01-0.03) |
| GAT7125 | 90(40-150) | |||||
| GSTS | GAT7115 | 120(60-180) | 0.02(0.01-0.03) | |||
| GAT7125 | 90(40-150) | |||||
| M | stainless | ≤300 | GSTC | GAT7115 | 100(60-150) | 0.015(0.01-0.02) |
| GAT7125 | 80(40-130) | |||||
| GSTS | GAT7115 | 100(60-150) | 0.015(0.01-0.02) | |||
| GAT7125 | 80(40-130) |
Tool bodies:
A full range of toolholders, including regular external round toolholders and back turning toolholders.
| No | Series of rods | Machining type | Icon | Note |
| 1 | GST | external machining |  |
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| 2 | GST-RS | external machining |  |
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GSTC Insert machining cases（pin）
| Specification | GSTC4R200N-U |  |
| Dimension | GAT7125 | |
| Material | 20CrMo | |
| Cutting speed | 69m/min | |
| Feed rate | 0.03mm/r |  |
| Cutting depth | 3.0mm | |
| Cooling method | Water-based emulsion / external cold | |
| Cutting method | External grooving machining |
GSTT Insert machining cases（tubes）
| Specification | GSTT3RN6001 |  |
| Dimension | GAT7115 | |
| Material | 20-gauge steel | |
| Cutting speed | 48m/min | |
| Feed rate | 1.5mm/r |  |
| Cutting depth | 1.04mm | |
| Cooling method | Water-based emulsion / external cold | |
| Cutting method | External threading |
