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BT40-FMB16-100 Tool Holder with FMB16 Milling Shank for CNC Milling Machines
BT40-FMB16-100 Tool Holder is a high-precision tool holder designed for CNC milling centers. It delivers exceptional stability, minimal runout, and secure tool clamping during high-speed milling and drilling operations. Manufactured from hardened steel, it ensures long service life and consistent performance in professional metalworking.
Usage of BT40-FMB16-100 Tool Holder
This tool holder is commonly mounted in CNC milling machines, vertical milling centers, and universal machining centers. Ideal for end mills, drills, and boring heads in steel, aluminum, and composite applications. The BT40 taper ensures a rigid connection to the spindle, even at high RPMs.
Key Features:
- BT40 taper shank for secure spindle coupling
- Precision honed bore with ≤0.005 mm radial runout
- Hardened steel construction, HRC52–56 for wear resistance
- Dynamic balance G2.5/20000RPM for stable high-speed operation
- FMB16 milling shank for quick and reliable tool changes
- Complies with MAS403 BT (JIS B 6339) standard
Specifications:
| Model | BT40-FMB16-100 |
| Taper | BT40 |
| Shank | FMB16 |
| Length L, mm | 100 |
| Material | Hardened steel |
| Runout Accuracy | ≤0.005 mm |
| Hardness | HRC52–56 |
| Balance | G2.5/20000RPM |
| Standard | MAS403 BT (JIS B 6339) |
Application in CNC Milling
The BT40-FMB16-100 tool holder excels in contour milling, face milling, and precision drilling. It is trusted in automotive, aerospace, mold-making, and precision equipment manufacturing where rigidity and repeatability are critical.
Usage Guidelines:
- Ensure spindle taper and holder bore are clean before installation
- Use a torque wrench to reach the recommended tightening torque
- Avoid using impact tools for removal to prevent damage
Package Contents:
- 1 × BT40-FMB16-100 Tool Holder
- 1 × Tightening Wrench
- 1 × Protective Cap
Enhance your CNC milling precision and productivity with the BT40-FMB16-100 tool holder — engineered for durability, accuracy, and stability.

