SK tool holder

BBTcolletSK

Overview
The BBT-SK combines a BBT interface with an SK collet clamping system optimized for torque transfer. The SK configuration increases clamping force for milling and drilling, supports repeatable h7 tool holding, can be configured for internal/through-coolant and meets G1 balance requirements. It is positioned as a torque-oriented alternative to the BBT-ER option.

Features

• BBT interface with SK collet geometry for higher torque transmission
• Increased clamping force suitable for milling and drilling
• Repeatable tool holding to h7 tolerance
• Configurable for internal/through coolant supply
• Designed to meet G1 balance class

Applications

• Milling operations where torque transfer is critical
• Drilling requiring high clamping force
• Processes needing repeatable h7 tool holding and internal-coolant capability

Technical data
Technical data, dimensional diagrams and balance ratings are available on the product page. Consult the technical drawings for installation and dimensional details.

Specifications

• Interface: BBT
• Collet type: SK (torque-oriented geometry)
• Tool holding precision: repeatable h7
• Balance class: G1
• Coolant: supports internal/through-coolant arrangements
• Main function: increased torque and clamping force for milling and drilling
• Alternative to: BBT-ER (broader-range ER collet option)