Twelve CAT40 ER collet chuck holders in a single lot — enough to fully stock a machining center's toolholder carousel with the most versatile holder type available for CAT40 spindles. ER collet chucks accommodate a wide range of shank diameters within each collet series, reducing the number of different holder sizes needed to cover a full range of cutting tools. At 12 pieces, this lot is large enough to support dedicated tool setups across multiple operations without pulling holders from one job to start another — a critical advantage in shops running overlapping setups on the same machine or preparing for high-volume production runs. MakeMixed ModelCAT40 Year2010 or older Product #16388 Price Please login to see price. Make an Offer Get a Quote Share Ask a Question About This Machine Twelve CAT40 ER collet chucks — a serious block of the most versatile holders in the shop. With a dozen on hand, you cover multiple setups simultaneously without the scramble of rotating holders between jobs. This is how a well-run toolroom stays ahead of the machine. **All descriptions and specifications are preliminary and must be verified prior to purchase.** Live Tooling / Milling Specifications Spindle Second Spindle Tool Changer Turret Control Tailstock / Steadyrest Options Machine Used On: CAT40 (ANSI B5.50) Spindle CNC Machining Centers Product Description: ER Collet Chucks CAT40 Taper 12 Pieces CAT-40 V-flange taper per ANSI/ASME B5.50 (7/24 taper, 3.500 in. gage dia.) 5/8-11 retention knob thread (standard CAT40) Mixed manufacturers Buyer to confirm all specifications before purchasing.