🔧 Technical Specifications
Model: BT40-0818
Boring Range: Ø8 mm – Ø180 mm
Shank Type: BT40
Boring Type: Rough Boring + Fine Boring
Adjustment Accuracy:
Fine boring graduation: 0.01 mm per division
High precision vernier scale for micro adjustment
Application: CNC Milling Machines, Machining Centers
🧩 Main Components Included
The boring head system mainly consists of:
NBH0818 Boring Head (Main Body)
BT40 Shank
Cutter Arbor
Fine Boring Cutter Holder
Rough Boring Cutter Holder
Indexable Insert & Clamping Screws
This modular design allows flexible tool combinations for different machining depths and bore sizes.
⚙️ Key Features & Benefits
✔ Wide Diameter Coverage – One tool covers Ø8 to Ø180 mm
✔ Rough + Finish in One Setup – Saves tool change time
✔ High Precision Adjustment – Accurate bore size control
✔ Rigid Construction – Reduced vibration & chatter
✔ Easy Diameter Adjustment – Graduated dial with vernier scale
✔ Higher Productivity – Suitable for batch and precision work
🛠️ Adjustment of Machining Diameter (Easy Method)
Loosen the locking screw (anti-clockwise).
Rotate the graduated dial to reach the required diameter.
Fine adjustment is done based on the “0” line of the vernier.
Tighten the locking screw as per recommended torque.
⚠️ Do not over-tighten locking screw to avoid accuracy loss.
🔩 Installation of Insert Holder
Clean the mounting surface of the holder and boring head body.
Mount the insert holder correctly onto the body.
For back boring, the holder can be rotated 180°.
Ensure no gap or misalignment before tightening the locking screw.
⚠️ Important Usage & Safety Instructions
Do not exceed the maximum boring range of the head.
Always start machining from general cutting conditions and increase speed gradually.
Maximum allowable speed is a safety limit, not a performance limit.
Ensure spindle, workpiece, and tool rigidity to avoid vibration.
Use only genuine clamping screws.
Replace clamping screws periodically (consumable item).
Clean insert seating surfaces using compressed air before installation.
Always wear safety goggles during boring operations.
🏭 Typical Applications
CNC machining centers
Precision hole enlargement
Engine components
Hydraulic parts
Die & mold industries
Heavy and light industrial machining
✅ Why Choose This Boring Head?
One system. Wide range. High accuracy.
Ideal for customers who want precision boring with flexibility and reliability.