{"product_id":"jacobs-9683-keyless-drill-chuck-1-2-in-jt2-tapered-mount","title":"Jacobs 9683 Keyless Drill Chuck 1\/2 in JT2 Tapered Mount","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe JACOBS 9683 is a keyless drill chuck designed for use with JT2 tapered spindles on stationary and portable drilling equipment. It accepts round and hex shanks from 3\/64 inch (0.039 inch) up to 1\/2 inch (0.512 inch), making it a versatile fit across a wide range of drill bit sizes. The chuck operates on a ball bearing design housed in a steel body, delivering consistent grip and reduced runout during high-speed operation. At a maximum rated speed of 7,000 RPM and a TIR of 0.0016 inch, it is built for precision work where bit wander cannot be tolerated. Machinists, tool and die shops, and industrial maintenance technicians are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThe 9683 suits drill presses, milling attachments, and other machine tools equipped with a JT2 (Jacobs Taper No. 2) spindle. It is appropriate for both light production and bench-top maintenance drilling in shop environments. The keyless sleeve allows quick bit changes without a chuck key, reducing downtime during repetitive drilling operations. Its closed length of 3.9 inches and sleeve diameter of 1.81 inches should be verified against the host machine clearance before installation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eKeyless operation for fast, tool-free bit changes\u003c\/li\u003e\n  \u003cli\u003eCapacity range of 3\/64 inch to 1\/2 inch covers standard drill bit sizes\u003c\/li\u003e\n  \u003cli\u003eBall bearing construction supports smooth, high-speed rotation up to 7,000 RPM\u003c\/li\u003e\n  \u003cli\u003eTIR of 0.0016 inch for low runout and accurate hole placement\u003c\/li\u003e\n  \u003cli\u003eSteel chuck body for durability in shop and industrial environments\u003c\/li\u003e\n  \u003cli\u003eJT2 tapered mount seats securely on compatible machine tool spindles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for machine tool spindles with a JT2 (Jacobs Taper No. 2) tapered mount. Verify spindle taper size and clearance dimensions against the closed length of 3.9 inches and sleeve diameter of 1.81 inches before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a machinist or qualified maintenance technician. Before mounting, de-energize the machine and lock out the spindle per applicable LOTO procedures. Seat the JT2 taper fully onto the spindle arbor using a soft mallet; never use the chuck jaws as a striking surface. Inspect the taper bore and spindle for burrs or debris before seating to ensure full contact and accurate runout.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Chuck Capacity\u003c\/strong\u003e: 3\/64 inch (0.039 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Chuck Capacity\u003c\/strong\u003e: 1\/2 inch (0.512 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Size\u003c\/strong\u003e: JT2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKey Type\u003c\/strong\u003e: Keyless\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: 1.81 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClosed Length\u003c\/strong\u003e: 3.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpen Length\u003c\/strong\u003e: 3.46 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTIR\u003c\/strong\u003e: 0.0016 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 7,000\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: JACOBS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9683\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JACOBS CHUCK","offers":[{"title":"Default Title","offer_id":67907743940914,"sku":"9683","price":450.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b2f456527096745c404eef9b40e28748.jpg?v=1791181256","url":"https:\/\/voomisupply.com\/products\/jacobs-9683-keyless-drill-chuck-1-2-in-jt2-tapered-mount","provider":"Voomi Supply","version":"1.0","type":"link"}