Product Overview

The BMT (Base Mount Tooling) interface has become the industry standard for high-performance CNC turning centers. Unlike older VDI systems, BMT tool holders bolt directly to the face of the turret using four heavy-duty screws and locate precisely via a precision-ground keyway. This design offers massive structural rigidity, making it ideal for aggressive roughing cuts, interrupted cutting, and hard turning. Our BMT Fixed Tool Holders (also known as static blocks) are engineered to harness this rigidity, providing a rock-solid foundation for your standard turning tools, boring bars, and indexable drills.

Key Features & Advantages

• Maximum Rigidity: The 4-bolt mounting system and precision keyway eliminate the leverage and flex found in shank-style holders, drastically reducing chatter during heavy cuts and improving workpiece surface finish.

• Comprehensive Tooling Range:

• OD Turning Holders: For standard square shank turning and facing tools (e.g., 20mm or 25mm square shanks).

• ID Boring Bar Holders: Featuring split-sleeve or set-screw clamping for maximum grip on cylindrical shanks (boring bars, U-drills).

• Face / Cut-Off Holders: Specialized blocks for grooving and parting off operations.

• Optimized Coolant Delivery: Integrated internal coolant channels deliver high-pressure fluid directly to the cutting edge, improving chip evacuation, reducing heat, and extending insert life.

• Precision Ground Interfaces: The mounting face and locating keyway are precision-ground to ensure perfect alignment with the turret centerline, minimizing setup time and ensuring high repeatability.

• Heavy-Duty Construction: Machined from high-strength alloy steel and treated for corrosion resistance, ensuring long-term durability in harsh shop environments.

Why Partner with Pingyuan Zhenghao Machinery?

• Direct Manufacturer Savings: Bypass trading companies and outfit your entire BMT turret directly from our factory for highly competitive wholesale pricing.

• Broad Machine Compatibility: Our BMT holders are designed to strict industry standards, ensuring seamless compatibility with major machine tool builders utilizing BMT turrets (e.g., Doosan, Haas, Samsung, Hyundai WIA, Victor).

• Custom Tooling Solutions: We can manufacture specialized, multi-tool, or extended BMT blocks tailored to your specific complex machining requirements.

• Strict Quality Control: Every BMT block undergoes rigorous 3D CMM inspection for dimensional accuracy, keyway alignment, and coolant seal integrity before shipment.

Frequently Asked Questions (FAQ) - Selection Guide

Q1: What is the exact difference between BMT and VDI tool holders?

A:VDI holders use a serrated cylindrical shank that slides into a hole in the turret and is clamped by a wedge. BMT (Base Mount Tooling) holders have a flat base that bolts directly to the face of the turret with four screws and aligns with a keyway. BMT offers significantly higher rigidity for heavy cutting, while VDI allows for slightly faster tool changeovers.

Q2: How do I know which BMT size my machine uses?

A: The BMT size (e.g., BMT45, BMT55, BMT65) refers to the specific bolt pattern, keyway width, and locating dimensions of your turret. You must consult your CNC machine's manual or measure the turret interface to ensure you order the correct size. BMT sizes are strictly non-interchangeable.

Q3: Do these static holders support high-pressure coolant?

A:Yes. Our BMT fixed holders are designed with robust internal coolant channels and high-quality sealing surfaces, making them fully compatible with modern high-pressure coolant systems (often up to 70 bar / 1000 PSI) to blast chips away from the cutting zone.

Q4: Are these holders for driven (live) tooling?

A:No. These are "Fixed" or "Static" tool holders, meaning they do not rotate. They are used for standard turning, boring, and center drilling operations where the workpiece rotates in the main spindle. We also manufacture BMT Driven (Live) Tool Holders for milling, tapping, and cross-drilling operations.

Maximize your lathe's metal removal rates and eliminate chatter with our Ultra-Rigid BMT Fixed Tool Holders.

Contact our sales engineering team today for a complete BMT catalog, compatibility checks, and bulk pricing.