TC820 Overload Protection Tap Collet M5-M30 (ISO/JIS/INCH)
Tapping chuck/holder M5-M30 for quick-change tap holding with overload protection. 26 catalogue models. Factory-direct from NBD (Beijing Shuangfengli) — custom sizes on request.
Description
The TC820 Overload Protection Tap Collet M5-M30 (ISO/JIS/INCH) is part of NBD’s tapping tool holder line for CNC machining centers, tapping machines, drill presses and lathes, designed for quick-change tap holding with overload protection. Tapping range M5-M30 with 26 catalogue models.
Features
- High precision, long tool-life with torque protection function.
- Torsion reflect sensitive and changes according to various
- Used for kinds of tapping machine including electric
- At present, many tapping machine factories have been
Model Naming
Model = Standard prefix (ISO/JIS) + collet size (GT12/GT24/GT42 or TC312/TC820/TC1433) + tap size (e.g. M12); d = tap shank dia., W = tap square.
Specification
| Model | Spec | Dimensions (mm) | ||
|---|---|---|---|---|
| ISO-TC820-M5 | M5 | 5 | 4X4 | |
| ISO-TC820-M6 | M6 | 6.3 | 5X5 | |
| ISO-TC820-M8 | M8 | 6.3 | 5X5 | |
| ISO-TC820-M10 | M10 | 8 | 6.3X6.3 | |
| ISO-TC820-M12 | M12 | 9 | 7.1X7.1 | |
| ISO-TC820-M14 | M14 | 11.2 | 9X9 | |
| ISO-TC820-M16 | M16 | 12.5 | 10X10 | |
| ISO-TC820-M18 | M18 | 14 | 11.2X11.2 | |
| ISO-TC820-M20 | M20 | 14 | 11.2X11.2 | |
| ISO-TC820-M22 | M22 | 16 | 12.5X12.5 | |
| ISO-TC820-M24 | M24 | 18 | 14X14 | |
| ISO-TC820-M27 | M27 | 20 | 16X16 | |
| ISO-TC820-M30 | M30 | 20 | 16X16 | |
| JIS-GT24-M5 | M5 | 3/16 | 5.5 | 4.5X4.5 |
| JIS-GT24-M6 | M6 | 1/4 | 6 | 4.5X4.5 |
| JIS-GT24-M8 | M8 | - | 6.2 | 5X5 |
| JIS-GT24-M10 | M10 | 3/8 | 7 | 5.5X5.5 |
| JIS-GT24-M12 | M12 | - | 8.5 | 6.5X6.5 |
| JIS-GT24-M14 | M14 | 9/16 | 10.5 | 8X8 |
| JIS-GT24-M16 | M16 | - | 12.5 | 10X10 |
| JIS-GT24-M18 | M18 | 3/4 | 14 | 11X11 |
| JIS-GT24-M20 | M20 | - | 15 | 12X12 |
| JIS-GT24-M22 | M22 | 7/8 | 17 | 13X13 |
| JIS-GT24-M24 | M24 | - | 19 | 15X15 |
| JIS-GT24-M27 | M27 | - | 20 | 15X15 |
| JIS-GT24-M30 | M30 | - | 23 | 17X17 |
All dimensions in mm. Custom sizes and other interfaces on request — send us your drawing for a fast quote.
NBD (Beijing Shuangfengli Technology Co., Ltd.) manufactures CNC tool holders, tapping chucks and workholding with short lead times and factory-direct support for worldwide distributors and end users.
Additional information
| Interface / Taper | C820 |
|---|---|
| Tapping Range | M5-M30 |





