BT collet chuck

ERmillingdrilling

Product overview
The BT-ER is a general-purpose ER collet tool holder designed for machining-center workflows. The 16° ER collet accepts h7 tools from 1 to 30 mm, enabling fast tool changes for drilling, reaming, tapping, milling and engraving. Center-through coolant is available when used with a compatible pull stud.

Performance highlights

• Tool holder run-out accuracy (radial): ≤2 μm
• Combined run-out accuracy: ≤5 μm
• Dynamic balancing grade: ≤G1

Applications

• Drilling
• Reaming
• Tapping
• Milling
• Engraving

Notes
Center-through coolant is supported when paired with a suitable pull stud. Uses a 16° ER collet format covering 1–30 mm h7 tool diameters; designed for quick tool changes in machining-center setups.

Technical specifications

• Model: BT-ER
• Collet type: ER (16°)
• Supported tool diameter range: 1–30 mm (h7)
• Tool holder run-out accuracy (radial): ≤2 μm
• Combined run-out accuracy: ≤5 μm
• Dynamic balancing grade: ≤G1
• Primary machining functions: drilling, reaming, tapping, milling, engraving
• Coolant: Center-through coolant supported with suitable pull stud
• Designed for quick tool changes in machining-center workflows