{"product_id":"accupro-np01640400msc-keyless-drill-chuck-cat40-5-8-inch","title":"Accupro NP01640400MSC Keyless Drill Chuck CAT40 5\/8 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO NP01640400MSC is a keyless drill chuck designed for CNC machining centers and milling machines equipped with CAT40 spindles. It accepts drill shanks from 1\/8 inch to 5\/8 inch (0.6250 inch maximum), making it suitable for a wide range of drilling operations without requiring a key for tightening or releasing. The chuck uses an integral shank mount with a taper shank design, providing a rigid, direct connection to the spindle. A ball bearing mechanism supports smooth operation and consistent clamping force. Total indicated runout (TIR) is rated at 0.0016 inch, supporting accurate hole placement across production and toolroom environments.\u003c\/p\u003e\u003cp\u003eThis chuck is used in production machining, toolroom work, and job shop environments where CAT40 tooling is the standard. The keyless design speeds up tool changes on vertical machining centers and drill presses with CAT40 spindle interfaces. The 55 mm sleeve diameter and taper shank configuration are consistent with standard CAT40 tooling systems found in industrial machine shops. A spanner wrench is included for sleeve adjustment. Installation and tool changes are typically performed by machinists or CNC operators following standard lockout and tooling change procedures.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eKeyless operation for fast tool changes without a chuck key\u003c\/li\u003e\n\u003cli\u003eCapacity range of 1\/8 inch to 5\/8 inch (0.6250 inch) accommodates a broad selection of drill shanks\u003c\/li\u003e\n\u003cli\u003eCAT40 integral taper shank mount for direct spindle connection\u003c\/li\u003e\n\u003cli\u003eTIR of 0.0016 inch for consistent drilling accuracy\u003c\/li\u003e\n\u003cli\u003eBall bearing design supports smooth clamping and release\u003c\/li\u003e\n\u003cli\u003eIncludes spanner wrench for sleeve adjustment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with CAT40 spindle interfaces on CNC vertical machining centers and drill presses that accept CAT40 integral shank tooling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator. Always power down and lock out the machine spindle before mounting or removing tooling. Follow the machine tool manufacturer guidelines for CAT40 tool retention torque and draw bar engagement. Inspect the taper shank and spindle bore for debris or damage before seating the chuck.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Chuck Capacity\u003c\/strong\u003e: 1\/8 inch (15.88 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Chuck Capacity\u003c\/strong\u003e: 5\/8 inch (0.6250 inch \/ 15.88 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Integral Shank\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Size\u003c\/strong\u003e: CAT40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey Type\u003c\/strong\u003e: Keyless\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Taper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type\u003c\/strong\u003e: Ball\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChuck Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleeve Diameter\u003c\/strong\u003e: 55 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed Length\u003c\/strong\u003e: 131 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Length\u003c\/strong\u003e: 120 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTIR\u003c\/strong\u003e: 0.0016 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Spanner Wrench\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 8.05 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: NP01640400MSC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51734931145010,"sku":"NP01640400MSC","price":576.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7160213cc7cb391f0d8aea8d14e83b7a.jpg?v=1788768294","url":"https:\/\/voomisupply.com\/products\/accupro-np01640400msc-keyless-drill-chuck-cat40-5-8-inch","provider":"Voomi Supply","version":"1.0","type":"link"}