BT30-ER25-70 Collet Chuck Holder With Preset Dynamic Balance for CNC Milling and Lathe Machines

BT30-ER25-70 Collet Chuck Tool Holder is a high-precision tool holder designed for CNC machining centers. It ensures exceptional stability, durability, and accuracy in high-speed drilling, milling, and engraving operations. Manufactured using high-quality 20CrMnTi steel, this holder provides superior performance for professional machining needs.

Usage of BT30-ER25-70 Collet Chuck Holder

This collet chuck tool holder is commonly used in CNC milling machines, lathe machines, and high-precision machining centers. It is ideal for tool clamping during high-speed operations such as drilling, engraving, and end milling in metal, plastics, and composites. The BT30 shank ensures a secure fit and stability even at high RPMs, making it suitable for both industrial and workshop environments.

Key Features:

• Made from high-strength 20CrMnTi steel for long-lasting performance
• Precision hardened to HRC48 for wear resistance
• High concentricity with ≤0.005mm accuracy for ultra-precise results
• Balanced at G2.5/25000RPM for high-speed spindle compatibility
• Supports ER25 collets, interchangeable with ER collet systems
• Manufactured in accordance with MAS403 BT (JIS-B 6339) standard

Specifications:

Application in CNC Machining

The BT30-ER25-70 collet chuck holder is widely used across industries including automotive, aerospace, mold manufacturing, and electronics. It is especially effective in high-speed and high-precision operations where tool stability and runout control are critical. Whether for fine engraving, mold cavity finishing, or detailed part fabrication, this collet chuck ensures reliable performance and repeatable results.

Important Usage Notes:

• Ensure the tool rod insertion exceeds the effective clamping length of the collet
• Always use the correct wrench – avoid makeshift tools to prevent damage
• Do not use tools with flats or notches on the shank in ER-type collets

Package Includes:

• 1 x BT30 ER25 Collet Chuck Holder
• 1 x Protective Plastic Case

Upgrade your CNC machine’s performance with the BT30-ER25-70 balanced collet chuck holder – engineered for durability, precision, and stability in demanding machining applications.