Compact High-Speed Design: Small body with optimized weight for reduced vibration and improved machining accuracy at 10000rpm.
Heat Oxidation : Made of 20CRMnTi steel with carburizing depth over 0.8mm for extended tool life in continuous operation.
Stable Clamping Performance: Achieves ≤0.005μm overall clamping roundness for workpiece in metal cutting applications.
Universal CNC Compatibility: BT30 taper interface works with most CNC milling machines requiring ER16 collet systems.
70mm Enhanced : Extended L1 length provides clearance for deep cavity machining while maintaining rigidity.

Features:
1. Made of steel material for long service life
2. Small body and it has Durability-Optimized
3. The nut is designed with no wind resistance to ensure more stable machining at high speed.
4. It has high heat strength and oxidation resistance, strong toughness and super wear resistance.
5. The close cooperation of the cutting force of the tool on the workpiece to the guide column reduces the resonance and makes the machining accuracy more stable.

Specification:
Condition:
Model: BT30-ER16-70
Material: 20CRMnTi
Standard Speed: 10000rpm
Hardness: >HRC56D°
Accuracy:
Carburizing Depth: >0.8mm
Overall Clamping : less than or equal to 0.005um
Roundness:
Surface roughness: >0.8mm
L1 Length: Approx. 70mm / 2.8in
d1 Length: Approx. 28mm / 1.1in
Package List:
1 x Holder