Product Overview

The DIN 69880 VDI quick-change tooling system is essential for minimizing setup times on modern CNC turning centers. The E-Series is specifically designed for holding cylindrical shank tools for internal machining operations along the Z-axis. Our high-quality E1, E2, and E4 tool holders provide absolute rigidity and perfect centerline accuracy for drilling, boring, reaming, and tapping. By utilizing premium materials and advanced grinding techniques, these holders eliminate chatter, improve hole surface finish, and drastically increase the lifespan of your expensive carbide cutting tools.

Key Features & Advantages

• Targeted Internal Machining Solutions:

• E1 Type: Designed for indexable U-drills, featuring a specialized internal coolant routing system that directs high-pressure fluid straight through the center of the drill for optimal chip evacuation.

• E2 Type: Boring bar holders equipped with robust set screws to securely clamp solid cylindrical shanks, ideal for heavy internal turning and boring.

• E4 Type: ER collet chuck holders (e.g., E4-30x25 for VDI30/ER25, E4-40x32 for VDI40/ER32) offering maximum versatility and extreme concentricity for holding end mills, twist drills, and taps.

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

• Premium Material & Hardness: Forged from high-grade 20CrMnTi alloy steel, deeply case-hardened to HRC 56-58, providing exceptional core strength and wear resistance on the locating surfaces.

• Precision Ground Serrations: The VDI shank teeth and seating faces are meticulously ground to ensure a rigid, vibration-free lock against the turret's clamping wedge.

• Optimized Coolant Delivery: Engineered with precise internal coolant channels and adjustable external nozzles to deliver fluid exactly where it is needed, preventing heat build-up and chip packing.

Why Partner with Pingyuan Zhenghao Machinery?

• Direct Manufacturer Savings: Source your entire VDI turret tooling package directly from our factory, bypassing middlemen for highly competitive wholesale costs.

• Comprehensive Size Range: We stock all common VDI shank diameters (VDI20, VDI30, VDI40, VDI50) combined with various bore sizes and ER collet capacities.

• 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 does the designation "E4-40x32" mean?

A: This is a standard naming convention for VDI collet chucks. "E4" indicates it is an ER collet chuck holder for a VDI turret. "40" refers to the VDI shank diameter (VDI40, which fits a 40mm hole in the turret). "32" refers to the ER collet size it accepts (ER32). Therefore, it is a VDI40 holder that takes ER32 collets.

Q2: Can I use an E2 boring bar holder for a U-drill?

A: While physically possible if the shank diameters match, it is not recommended. U-drills require high-pressure coolant directly through the center of the tool to flush out chips. The E1 holder is specifically designed with a central coolant channel for this exact purpose. The E2 holder typically directs coolant alongside the tool or relies on different routing, which may lead to chip packing and drill failure.

Q3: Are these VDI holders compatible with my specific CNC lathe brand?

A: Yes, as long as your lathe is equipped with a turret that conforms to the DIN 69880 (VDI) standard. This is a universal standard used by major turret manufacturers globally (like Sauter, Duplomatic, etc.) and found on lathe brands such as DMG MORI, Mazak, Doosan, Haas, and many others. You only need to verify your turret's VDI size (e.g., 30mm, 40mm).

Q4: Do these holders support internal coolant (coolant-through)?

A: Yes. The E1 and E4 models are specifically engineered to support internal coolant delivery. They feature a coolant port on the serrated shank that aligns with the turret's coolant supply, channeling the fluid directly through the center of the holder to the cutting tool.

Equip your turret for flawless internal machining with our High-Quality E1, E2, and E4 VDI Tool Holders.

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