CAT40 ER32 Collet Chuck Set, 5-Piece, 2.75 Inch

CAT40 ER32 collet chuck set upgrades toolholding accuracy and balance for cleaner cuts and reliable CNC machining. This 5-piece set features one-piece, hardened 40Cr construction with a smooth, rust-resistant finish for long service life. High-concentricity grinding supports tight runout control at working speeds, while the 2.75 in (70 mm) gage length helps maintain consistent reach for milling, drilling, and engraving setups.

• Includes 5 CAT40 ER32 collet chucks for fast changeovers and repeatable setups


• Delivers high concentricity for stable cutting, smoother finishes, and reduced chatter


• Supports high-speed, production-balanced operation up to 8000 RPM


• Enables through-spindle coolant flow from pull stud to collet for cleaner cutting zones


• Fits CAT40 V-flange spindles for CNC mills, lathes, drill presses, and engraving machines

Built for shops that need consistent runout control without constant re-indicating, this CAT40 ER32 tool holder set helps protect tools, improve part consistency, and keep cycle times predictable. The integrated one-piece design improves overall balance of the holder assembly, while the standard 2.75 in projection supports common workholding and fixture clearances. Stock your toolroom with a matched set for production or prototyping and keep your machines ready for the next job—grab yours today.

• Set size: 5 pcs


• Taper/format: CAT40 to ER32, V-flange


• Gage length: 2.75 in / 70 mm


• Max speed: 8000 RPM


• Accuracy/runout: 0.0001–0.0002 in (max)


• Material: 40Cr steel


• Coolant: Through-spindle coolant capable