Product Overview

The DIN 69880 VDI system is the industry standard for quick-change turret tooling. The B Series (Radial Tool Holders) is specifically designed for mounting square shank cutting tools (such as 20x20mm or 25x25mm turning tools) perpendicular to the Z-axis. These holders are essential for external operations like OD turning, facing, profiling, and parting off. Because the cutting forces in these operations are immense, our B-type holders are engineered with massive cross-sections and heavy-duty clamping mechanisms to eliminate vibration, ensuring superior surface finishes and extending the life of your carbide inserts.

Key Features & Advantages

• Complete B-Series Configurations: We offer the full spectrum to match any turret design and cutting direction:

• B1 / B2: Radial tool holders, Right-hand (B1) / Left-hand (B2), Short execution.

• B3 / B4: Radial tool holders, Overhead/Inverted Right-hand (B3) / Left-hand (B4), Short execution.

• B5 / B6: Radial tool holders, Right-hand (B5) / Left-hand (B6), Long execution (extended reach).

• B7 / B8: Radial tool holders, Overhead/Inverted Right-hand (B7) / Left-hand (B8), Long execution.

• DIN 69880 Standard Compliance: Precision-manufactured to strict DIN specifications, guaranteeing a perfect, repeatable fit in all standard VDI turrets (Sauter, Duplomatic, Pragati, etc.).

• Adjustable Coolant Delivery: Equipped with highly adjustable spherical coolant nozzles that allow operators to direct high-pressure cutting fluid precisely at the cutting edge, improving chip breaking and tool life.

• Heavy-Duty Clamping: Features a robust top-clamp wedge system (or multiple set screws) that secures the square shank tool firmly against the precision-ground locating faces, preventing movement during heavy interrupted cuts.

• Premium Material & Hardness: Forged from high-grade alloy steel, case-hardened to HRC 56-58, and precision-ground on the VDI shank and tool seating surfaces for maximum rigidity.

Why Partner with Pingyuan Zhenghao Machinery?

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

• Full Size Availability: We stock and manufacture all common VDI shank diameters (VDI20, VDI30, VDI40, VDI50, and VDI60) to fit any machine size.

• Precision Ground Locating Faces: The seating area for the square tool shank is ground perfectly parallel to the VDI shank axis, ensuring your tool is exactly on center height without the need for excessive shimming.

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

Frequently Asked Questions (FAQ) - Selection Guide

Q1: How do I know if I need a Right-Hand (B1/B3/B5/B7) or Left-Hand (B2/B4/B6/B8) holder?

A: This depends entirely on your CNC lathe's turret configuration (whether it is a left-hand or right-hand machine, and whether the turret is located in front of or behind the spindle) and the spindle rotation direction (M03 or M04). You must select the holder that presents the cutting edge of the tool to the workpiece correctly while directing the cutting forces down into the solid body of the holder.

Q2: What is the difference between "Short" (B1-B4) and "Long" (B5-B8) execution?

A:Short holders keep the cutting tool close to the face of the turret, providing the absolute maximum rigidity for heavy roughing. Long holders extend the tool further out from the turret face. This is necessary when you need extra clearance to avoid collisions between the turret and the tailstock, chuck, or a large workpiece.

Q3: What does "Overhead" or "Inverted" (B3/B4/B7/B8) mean?

A: Standard holders (B1/B2/B5/B6) mount the tool right-side up. Overhead/Inverted holders mount the square shank tool upside down. This is often used on lathes with rear-mounted turrets or when running the spindle in reverse (M04) to direct chips downward into the chip conveyor rather than letting them pile up on the tool.

Q4: Can I use these holders for internal boring?

A:No. The B-series is specifically designed with a rectangular slot to hold square shank tools for external turning and facing. For internal boring using cylindrical boring bars, you need the E-Series (e.g., Form E2) VDI holders.

Equip your turret for maximum metal removal with our Complete B-Series VDI Radial Tool Holders.

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