Overview

This technical document details the Eppinger range of CNC lathe tool holders and accessories compliant with DIN ISO 10889 (DIN 69880) standards. It covers specifications, product categories, dimensional data, and best practices for various tool holders, adapters, and related components designed to ensure precision, durability, and versatility in machining operations.

1. Technical Specifications and Features

• Material and Hardening: Tool holders are fully case hardened with surface hardness of 58–60 HRc and core strength above 1000 N/mm², ensuring wear resistance and durability.
• Precision Manufacturing: Critical surfaces (shaft, serration, seating face, locating bore, clamp plate, locator bore) are ground for high precision fit and function.
• Corrosion Resistance: Holders resist all known coolants and lubricants, preventing surface damage.
• Adjustability: Features include retrofitting for smaller cutter heights, adjustable cutter positioning via stop screws, and spring-mounted pressure plates for exact clamping.
• Coolant Supply: Internal coolant delivery through ball nozzles with quick adjustment enabled by a novel clamp fixture.
• Sealing: Undercut at shaft/seating face accommodates O-ring sealing per DIN ISO 10889-1.

2. Direction of Rotation and Mounting Types

The document provides a compatibility matrix for tool holders (VDI types B1–B8, C1–C4) relative to main spindle rotation directions (M03, M04) and turret positions (upper/lower), ensuring correct and safe application.

3. Product Range and Index

• Turning Tool Holders: Various forms (A1, A2, B1–B8) for square transverse and longitudinal mounting.
• Special Holders: For carbide indexable drills, boring bars, collet chucks, Morse taper holders, clamping rings, blanking plugs.
• Additional Holders: Floating holders, cut-off tool holders, tap holders with tension compensation, bar pullers, revolving stock stops, extendible die holders, revolving center points.
• Adapters and Accessories: Adapters for smaller lathe chisels and height-adjustable plates enhance versatility.

4. Dimensional Data and Part Numbers

Extensive tables list dimensions (lengths, widths, heights, diameters) and corresponding part numbers for each tool holder form and adapter. Special sizes are available on request. Height adjustability is noted for specific models.

5. Best Practices and Recommendations

• Select tool holder forms based on spindle rotation and turret position to maintain machining accuracy and safety.
• Use adjustable features to optimize cutter positioning and accommodate different cutter heights.
• Maintain coolant supply through adjustable ball nozzles to improve tool life and machining quality.
• Utilize corrosion-resistant holders to extend service life in coolant-rich environments.

6. Detailed Product Categories and Forms

• Form B Series: Rectangular transverse holders with variations in hand orientation (left/right), length, and overhead positioning (B4–B8).
• Form C Series: Rectangular lengthwise holders with right, left, overhead right, and overhead left hand configurations (C1–C4).
• Form D Series: Multiple-seat rectangular holders (D1 standard, D2 overhead).
• Form E Series: Holders for carbide indexable drills with internal coolant supply (E1) and boring bar holders with external/internal coolant (E2).

7. Boring Bar Holders and Coolant Supply

Boring bar holders (Form E2) feature both external and internal coolant supply options. Dimensions include diameters (D1, D2, D6, D8), lengths (L3, L6, L7), and heights (H1, H2). Some models offer height and side adjustability. Right-hand offset boring bar holders are also detailed, with notes on drawing discrepancies.

8. Collet Chucks (Forms E3 and E4)

• Designed for clamping collets per DIN standards (6388 Ortlieb, 6345 Rubber-Flex, 6499 Schaublin).
• Coolant supply through collet; collet nuts and sealing rings referenced in accessory catalogs.
• Ordering requires specifying clamping diameter.
• Some collet nuts have hexagonal shapes for fork wrenches; height adjustment available on certain models.

9. Morse Taper Holders (Form F1)

Suitable for drills with internal coolant supply per DIN 228 Form BK (radial coolant supply). Part numbers and taper sizes (KD-KM) are provided.

10. Clamping Rings and Blanking Plugs (Forms Z1 and Z2)

Clamping rings (Z1) and blanking plugs (Z2) conform to DIN ISO 10889 with part numbers and key dimensions listed.

11. Additional Tool Holders and Accessories

• Short Drilling Chucks: Reversible operation with coolant supply through center.
• Revolving Stock Stops: Limit material feed, rotate with workpiece.
• Extensible Die Holders: For threading dies (dies not included), with specified thread size ranges.
• Centering Inserts and Revolving Center Points: Spring-loaded for precise workpiece centering.
• Floating Holders: Available with internal or external coolant supply.
• Cut-off Tool Holders: Height adjustable, compatible with Iscar and Coromant tools, some with coolant supply.
• Tap Holders: Provide tension and traction compensation; accessories referenced separately.
• Jaws for Bar Pullers: Sets covering raw material diameters 15–68 mm with adjustable clamping force.
• Test Mandrels: For checking and calibrating tool holders and spindles.

12. Standards and Compliance

All components comply with DIN ISO 10889 (DIN 69880), ensuring standardization, interchangeability, and compatibility within lathe tooling systems. Collets and drills comply with relevant DIN standards (6388, 6345, 6499, 228).

13. Critical Information and Ordering Guidelines

• Specify clamping diameters precisely when ordering collets, tap holders, and related accessories.
• Coolant supply integration is critical for tool life and machining quality; select holders accordingly.
• Adjustability features (height, side) enhance machining flexibility.
• Note discrepancies between drawings and actual tools for some boring bar holders; verify before selection.
• Extensible die holders do not include threading dies; order separately.
• Jaws for bar pullers are supplied in sets and cover a broad range of material diameters.

14. Dimensional Data and Part Numbering

The document provides comprehensive tables with dimensions (diameters D1–D10, lengths L1–L9, heights H1–H3, widths B1–B3) and corresponding part numbers for all tool holders and accessories. This facilitates precise selection, ordering, and inventory management.

15. Manufacturer and Contact Information

Manufacturer: ESA Eppinger GmbH, Denkendorf, Germany. Contact details include telephone, fax, email, and website for technical support and inquiries.

Summary

The Eppinger tool holder range offers a robust, precise, and versatile solution for CNC lathe tooling, fully compliant with DIN ISO 10889 standards. Hardened construction, corrosion resistance, adjustable features, and integrated coolant supply options make these holders suitable for demanding machining tasks. The extensive product range, detailed dimensional data, and clear ordering guidelines support optimal tool selection and application, enhancing machining accuracy, safety, and efficiency.