Achieve superior precision and rigidity in your CNC machining center with these BT40 and BT50 collet chucks. Engineered for minimal runout, they ensure exceptional concentricity for high-tolerance milling, drilling, and tapping operations. Compatible with ER11, ER16, ER20, ER32, and ER40 collets, they provide versatile toolholding for a wide range of shank diameters. Features and Benefits
- BT40 and BT50 Taper Interface - Ensures a rigid, vibration-dampening connection in your CNC machine spindle for improved surface finish and tool life.
- Precision-Ground ER Collet System - Delivers excellent gripping force and minimal runout for consistent, high-accuracy machining results.
- Hardened and Ground Steel Construction - Provides exceptional durability and wear resistance for reliable, long-term performance in demanding shop environments.
- Wide ER Collet Range (ER11 to ER40) - Offers maximum flexibility to securely hold a vast array of tool shank sizes with a single set of tool holders.
- Balanced for High RPM - Manufactured to precise tolerances for smooth operation at high spindle speeds, reducing vibration and improving part quality. Applications
- Precision Milling and Drilling - Ideal for detailed contouring, pocketing, and hole-making operations requiring tight tolerances and fine finishes.
- High-Volume Production - Reliable and repeatable tool clamping makes these chucks suitable for extended run times in manufacturing cells.
- Toolroom and Prototype Work - The versatility of the ER collet system allows for quick tool changes and setup for diverse, low-volume jobs.
- General CNC Machining - A fundamental upgrade or replacement component for any machining center utilizing BT40 or BT50 spindle tooling.
Material: Alloy Steel (body), Hardened Steel (collet nut). Application: CNC Machine Center. Balancing Grade: G2.5 at 20,000 RPM (minimum). Collet Standard: DIN 6499. Collet Type: ER11, ER16, ER20, ER32, ER40. Maximum RPM: 20,000 (dependent on specific model and balance). Maximum Runout: ≤ 0.003 mm. Surface Treatment: Nitriding or Hard Chrome Plating. Taper Standard: JIS B 6339. Taper Type: BT40, BT50. Thread Type: Metric (specific to collet size). Flange Diameter (BT40): 63mm (Standard DIN 69871). Flange Diameter (BT50): 82mm (Standard DIN 69871). Collet Nut Material: Alloy Steel. Taper Shank Material: Alloy Steel (e.g., 42CrMo). Maximum Grip Range (ER Collet): Approximately 1mm per collet size (e.g., ER32: 1mm). Maximum Recommended Speed: Varies by size and balance, typically 8,000 - 25,000 RPM. Compatible Collet Standards: ER11, ER16, ER20, ER32, ER40. Taper Shank Standard: BT40 and BT50. Application: CNC Machining Centers, Milling, Drilling. Balancing Grade: G2.5 at 20,000 RPM (or as per manufacturer spec). Collet Chuck Type: ER Collet Chuck. Collet Nut Thread: Fine Pitch Metric Thread. Collet Retention Force: High, via precision ground taper and nut torque. Coolant Through Capability: Optional, depending on model (Through-Tool Coolant Ports). Drive Key Configuration: Standard DIN 6885 Form A or B (for BT flange). Maximum Runout Accuracy: ≤ 0.003mm (3µm) at the nose. Product Type: Taper Shank Tool Holder with Collet Chuck. Pull Stud Thread (BT40): Typically M16. Pull Stud Thread (BT50): Typically M24. Taper Shank Hardness: 45-50 HRC (Hardness Rockwell C). Taper Shank Surface Finish: Hard Chrome Plated or Nitrided. Q: What are the specifications for this BT40 ER collet chuck set? A: This set includes a BT40 tool holder compatible with standard CNC machine centers. It is designed to work with ER11, ER16, ER20, ER32, and ER40 collets, providing a versatile range for holding various tool shank sizes.. Q: How durable is this BT40 ER tool holder for CNC machining? A: This tool holder is manufactured from high-grade alloy steel and undergoes precision grinding for a tight fit. It is built to withstand the high-speed, high-precision demands of CNC machining centers, offering reliable performance and long service life.. Q: Is this BT40 ER collet chuck compatible with my Haas or Fanuc CNC mill? A: Yes, the BT40 taper is an industry-standard interface used by most major CNC machine brands like Haas, Fanuc, and others. As long as your machine center uses a BT40 spindle, this ER collet chuck will be compatible.. Q: Does this CNC tool holder come with any warranty or guarantee? A: Yes, this product is backed by a standard warranty against manufacturing defects. Please refer to the seller's specific warranty terms for detailed coverage information and duration.. Q: Is this BT40 ER tool holder set a good value for the price? A: Yes, this offers excellent value for DIY enthusiasts and professionals seeking quality without premium brand pricing. It delivers reliable performance for regular use in a CNC machine center with a comprehensive range of ER collet sizes..