BT tool holder

colletfor machiningbalanced

Product Overview
The BT-KR is designed for users who prioritize collet precision retention and extended service life. KR collets combine wear-resistant materials with a controlled deformation design. PP-grade collets are available for ultra-low radial runout in demanding high-speed machining.

Key Performance

• Tool holder radial run-out: ≤2 μm
• Combined run-out accuracy: ≤5 μm
• Dynamic balancing grade: ≤G1
• PP-grade collet radial runout: down to ~1 μm (for high-speed machining)

Application Summary
Intended for high-speed machining requiring low tool runout, low collet deformation and improved collet service life. Well suited to precision boring, milling and drilling operations where repeatability and concentricity are critical.

Technical specifications

• Model series: BT-KR
• Collet type: KR collets with wear-resistant materials and controlled deformation
• Tool holder radial run-out: ≤2 μm
• Combined run-out: ≤5 μm
• Dynamic balancing grade: ≤G1
• PP-grade collet radial runout capability: ~1 μm (high-speed applications)
• Typical use: high-speed precision machining, low-deformation clamping, extended collet life