Product Overview

The DIN 69880 VDI quick-change tooling system is globally recognized for reducing setup times and increasing productivity on CNC lathes. While radial and axial holders (B and C types) handle external turning, the E and F series are specifically designed for internal machining—holding cylindrical shank tools along the Z-axis. Whether you are drilling, boring, reaming, or tapping, our comprehensive line of E and F type VDI holders ensures that your cutting tools are held perfectly on-center with absolute rigidity, minimizing vibration and delivering superior workpiece accuracy.

Key Features & Advantages

• Complete Internal Machining Series:

• Form E1: Designed for indexable insert drills (U-drills) with highly efficient internal coolant delivery.

• Form E2: Boring bar holders with secure set-screw clamping for heavy ID turning.

• Form E3 & E4: Collet chuck holders utilizing OZ (DIN 6388) or ER (DIN 6499) collets for precise clamping of end mills, drills, and taps.

• Form F: Morse Taper (MT) holders with a tang flat, perfect for holding traditional HSS twist drills and reamers.

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

• Optimized Coolant Routing: Engineered with precise internal coolant channels to deliver high-pressure fluid directly to the cutting edge, essential for chip evacuation in deep-hole drilling and boring.

• Premium Material: Forged from high-grade 20CrMnTi alloy steel, deeply case-hardened to HRC 56-58, and precision-ground to provide maximum durability and vibration damping.

• Precision Ground Serrations: The VDI shank teeth are meticulously ground to ensure a rigid, repeatable lock against the turret's clamping wedge.

Why Partner with Pingyuan Zhenghao Machinery?

• Direct Manufacturer Savings: Bypass trading companies and source your entire VDI turret tooling package directly from our factory for highly competitive wholesale costs.

• Full Size Availability: We stock and manufacture all common VDI shank diameters (VDI20, VDI30, VDI40, VDI50, and VDI60) with a vast array of internal bore and taper sizes.

• Custom Tooling Solutions: Need a non-standard bore size or extended length? Our engineering team can manufacture custom VDI holders tailored to your specific machining requirements.

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

Frequently Asked Questions (FAQ) - Selection Guide

Q1: What is the main difference between the E1 and E2 holders?

A: Both hold cylindrical shanks, but their primary applications differ. Form E1 is specifically designed for U-drills (indexable drills) and features a specialized internal coolant routing system that directs fluid straight through the center of the tool. Form E2 is designed for solid boring bars and typically uses multiple set screws to clamp the bar securely, often with coolant directed alongside the tool or through it, depending on the bar's design.

Q2: When should I use a Form F (Morse Taper) holder instead of an E4 (ER Collet) holder?

A: If you are using traditional tooling that already has a Morse Taper shank (like large HSS twist drills or heavy-duty reamers), the Form F holder allows you to mount them directly into the turret without needing a straight-shank adapter. For holding straight-shank solid carbide drills or end mills, the Form E4 (ER Collet) holder provides better concentricity and versatility.

Q3: How do I determine the correct VDI size for my CNC lathe?

A: The VDI size (e.g., VDI30, VDI40) corresponds directly to the diameter of the mounting hole in your lathe's turret, measured in millimeters. For example, if the hole in your turret is 40mm in diameter, you need VDI40 tool holders. Always check your machine's manual to confirm.

Q4: Are these E and F series holders capable of rotating (driven tools)?

A:No. The E1, E2, E3, E4, and F series are all static (non-driven) tool holders. They hold the cutting tool stationary while the workpiece rotates in the lathe spindle. If you need tools that spin (for milling or off-center drilling), you will need VDI Driven (Live) Tool Holders.

Equip your turret for any internal machining task with our Complete E & F Series VDI Tool Holders.

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