BT-GT Tension-Compression Tapping Chuck M3-M42 (BT30/BT40/BT50)
Tapping chuck/holder M3-M16 for tension-compression tapping with torque overload protection on drill presses, tapping machines, lathes and mills. 7 catalogue models. Factory-direct from NBD (Beijing Shuangfengli) — custom sizes on request.
Description
The BT-GT Tension-Compression Tapping Chuck M3-M42 (BT30/BT40/BT50) is part of NBD’s tapping tool holder line for CNC machining centers, tapping machines, drill presses and lathes, designed for tension-compression tapping with torque overload protection on drill presses, tapping machines, lathes and mills. Tapping range M3-M16 with 7 catalogue models.
Features
- 本体规格:JIS MAS 403 BT
- 适合在 CNC 加工中心、数控铣床等机床设备
- Spindle conicity standard:JIS MAS 403 BT
- Torque overload protection protects screw blank from fracture.
- Have floating, quick change and torque protection functions.
- Used on lathes, borers and private plane machines and so on.
Model Naming
Model = Shank size (e.g. BT30) + GT (tension-compression function code) + collet size (GT12/GT24/GT42 = tapping range M16/M30/M42 max) + L1 length.
Specification
| Model | Spec | Dimensions (mm) | ||||||
|---|---|---|---|---|---|---|---|---|
| BT30-GT12-120 | M3-M16 | 46 | 19 | 168 | 120 | 20 | M12 | GT12 |
| BT40-GT12-110 | M3-M16 | 46 | 19 | 175 | 110 | 25 | M16 | GT12 |
| BT50-GT12-120 | M3-M16 | 46 | 19 | 222 | 120 | 35 | M24 | GT12 |
| BT30-GT24-120 | M5-M30 | 66 | 30 | 168 | 120 | 20 | M12 | GT24 |
| BT40-GT24-130 | M5-M30 | 66 | 30 | 195 | 130 | 25 | M16 | GT24 |
| BT50-GT24-130 | M5-M30 | 66 | 30 | 232 | 130 | 35 | M24 | GT24 |
| BT50-GT42-190 | M24-M42 | 95 | 45 | 292 | 190 | 35 | M24 | GT42 |
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 | BT30, BT40, BT50 |
|---|---|
| Tapping Range | M3-M16 |





