MAS BT40 ER40 Collet Chuck A100 AD Coolant Through

The MAS BT40 ER40 Collet Chuck A100 AD is a precision tool holder designed for high-performance milling, drilling, reaming, and tapping operations. Manufactured by MAS, this collet chuck features a MAS BT40 taper and ER40 collet system, providing secure clamping and excellent run-out accuracy. The AD coolant delivery system ensures efficient coolant flow through the flange, enhancing tool life and machining quality.

Advantages

High precision with run-out accuracy ≤ 0.005 mm ensures superior surface finish and tool life. The ER40 collet system accommodates a wide range of tool diameters from 3 mm to 26 mm. The black oxide finish provides corrosion protection, and the balance grade G2.5 at 25,000 RPM ensures stable operation at high speeds.

Suitable for

• CNC milling machines with MAS BT40 spindle
• Precision machining of metals, plastics, and composites
• Applications requiring through-coolant capability

Key specifications

• Tool Holder Type: Collet Chuck
• Taper: MAS BT40
• Collet System: ER40
• Gauge Length (A): 100 mm
• Coolant Delivery: AD (through flange)
• Material: Alloy Tool Steel (20MnCr5)
• Surface Hardness: HRC 58-60
• Run-out Accuracy: ≤ 0.005 mm
• Balance Grade: G2.5 at 25,000 RPM
• Max Clamping Diameter: 26 mm
• Min Clamping Diameter: 3 mm
• Nut Type: ER40 Collet Nut (included)
• Pull Stud Thread: M16
• Standard Compliance: DIN 69871
• Corrosion Protection: Black oxide finish

Recommendations

For optimal performance, use with high-quality ER40 collets and ensure proper pull stud installation. Regularly check run-out and balance to maintain precision.