Overview

This document is a comprehensive technical guide for MILLTURN tooling components compatible with dual contact spindle systems such as BBT (BIG-PLUS), HSK-T, and BIG CAPTO. It covers tooling elements including shanks, holders, cartridges, inserts, chucks, coolant systems, and accessories, emphasizing compliance with ISO standards (ISO 26623-1, ISO 12164-3) and precision machining applications.

1. Tooling Systems and Standards

• Spindle Compatibility: Supports BBT (BIG-PLUS) per JIS B 6339, HSK-T series (ISO 12164-3), and BIG CAPTO systems.
• Interchangeability: Tools and holders are interchangeable within their series, supporting various insert types and sizes.
• Trademark Note: CAPTO is a licensed trademark from Sandvik Coromant.

2. Tooling Components and Types

• Shanks and Holders: Detailed specs for BBT40M, BBT50M shanks with flange sizes (F50, F63) and lengths; holders include basic types (S and F) and square holders for multi-tool setups to reduce Automatic Tool Change (ATC) time.
• Cartridges: Multiple types (45° Type S, 90° Type F) with coding indicating hand orientation, relief angles, insert shapes, clamping methods, and entering angles.
• Inserts: Adapted ISO standard inserts in rhombic (35°, 55°, 80°), triangle (60°), and other shapes; sizes include CN12, CN16, CN19, TN16, TN22, TN27, VB16, VC16, DN15, DN1504/1506 with notes on thickness and shim replacements.

3. Technical Specifications and Parameters

• Dimensions: Comprehensive dimensions for shanks, holders, cartridges, inserts including diameters (øD), lengths (L, L1, L2), flange sizes, and angles (entering angles 45°–117.5°, relief and clearance angles).
• Clamping Methods: Double-clamp, lever lock, screw-on, and combined methods; locking screws and wrenches specified, often sold separately.
• Coolant Supply: Center-through and side-through coolant options with interchangeable plugs; coolant pipes are optional accessories.
• Insert Thickness and Shim: Standard insert thickness 4.76 mm; thicker inserts (6.35 mm DN1506) require special carbide shim (DNS1506) for proper fit.

4. Coding and Identification System

• Detailed cartridge coding includes hand orientation (R, L, N), relief angle and insert shape codes (C, T, D, V), clamping method (D, P, S), entering angle, insert size, and cartridge type/size.
• This system enables precise selection and ordering of tooling components.

5. Recommendations and Notes

• Wrenches for cartridge clamping are generally sold separately and must be ordered as needed.
• Standard ISO inserts are not included with cartridges and require adaptation.
• Locking screw sets are optional for basic holders.
• Multi-tool square holders require 60° indexing on the machine spindle.
• Attention to insert thickness and shim replacement is critical for correct assembly and performance.

6. Spare Parts and Accessories

• Spare parts for cartridges and holders referenced (not included here).
• Locking screws, wrenches, and coolant pipes available as optional components.

7. Summary of Key Parameters

8. MILLTURN Chuck and Collet Systems

• MEGA MICRO CHUCK: Slim design, clamping range ø0.45–6.05 mm, max speed up to 35,000 min-1, includes MEGA NUT and optional accessories.
• MEGA NEW BABY CHUCK: Ultra-precision collet with runout <1 micron, clamping range ø0.25–20 mm, coolant-through holes, max speeds up to 35,000 min-1.
• MEGA E CHUCK: Designed for endmilling, clamping range ø3–12 mm, coolant-through holes, max speed 35,000 min-1.
• MEGA DOUBLE POWER CHUCK: High rigidity and precision, clamping range ø16–32 mm, coolant-through, max speed up to 30,000 min-1.

9. Technical Parameters and Limitations for Chucks

• Maximum rotational speeds vary by model (8,000 to 35,000 min-1).
• Clamping ranges precisely defined per chuck type.
• Adjustment screws for tool length available on some models.
• Coolant-through holes improve cooling efficiency.

10. Recommendations and Best Practices for Chucks

• Use specified wrenches for assembly and maintenance.
• Replace carbide shims and screws as needed to maintain precision.
• Observe maximum speeds to avoid damage.
• Utilize coolant-through features to enhance tool life and machining quality.

11. BIG CAPTO Shank Tooling and Coolant-Through Features

• Multiple chuck models (MEGA, NEW BABY, HYDRAULIC, MILLING, SHRINK, MOLD) with clamping ranges from 0.25 mm to 32 mm.
• Coolant-through holes standard on many models to supply coolant directly to cutting tools.
• Hydraulic chucks require h6 tolerance tools, no flats, and are not recommended for roughing endmills.
• Slim shrink chucks reduce interference in mold applications.
• Side lock screws for mold chucks require genuine BIG screws due to exclusive design.

12. Accessories and Spare Parts

• Includes MEGA wrenches, adjusting screws, collets, nuts, and seals.
• Adjusting screws allow fine length adjustments but are not compatible with all models.

13. Tap Holders and Tapping Ranges

• Models cover tapping ranges M2–M20, No.3–U1/4, M6–M12, U1/4–U7/16, P1/8–P3/8.
• Rigid tapping requires machine tool synchronization support.
• Coolant-through holes available for some models.

14. Face Mill Arbors and Modular Boring System

• Face mill arbors (Types A, C, FMH) with detailed dimensions and coolant-through bolt options.
• CKB modular boring system with BIG CAPTO shanks offers high accuracy, rigidity, and modular adaptability.

15. Morse and Jacobs Taper Arbors, ABS Shanks, and Test Bars

• Various taper holders with clamp bolts and distance collars for precise positioning.
• ABS shanks with coolant-through holes and test bars for machine maintenance and calibration.

16. BIG-PLUS Basic Holders and BIG CAPTO Holders

• Dual contact spindle system compatible with existing standards, offering cost savings and improved tool holding.
• Extensions and reductions detailed with clamp bolt specs and tightening torques.
• Coolant-through holes standard in many models.

Critical Information and Best Practices

• Clamp bolts usually included; bolts with coolant holes must be specified for coolant-through functionality.
• Rigid tapping requires machine tool support and synchronization compensation.
• Dimensional tolerances are critical (±0.005 mm on diameters).
• Modular systems enhance machine versatility and precision.
• Coolant-through designs improve tool cooling and machining performance.

Conclusion

This document provides an extensive technical reference for selecting, assembling, and maintaining MILLTURN tooling components compatible with BBT, HSK-T, and BIG CAPTO spindle systems. It emphasizes precision, modularity, coolant management, and adherence to ISO standards to optimize machining performance, tool life, and operational efficiency.