{"product_id":"jacobs-9756-rubber-flex-collet-chuck-straight-shank","title":"Jacobs 9756 Rubber-flex Collet Chuck Straight Shank","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe JACOBS 9756 is a Rubber-Flex collet chuck designed for secure, precise workholding in drilling and light milling operations. It accepts round stock and tooling from 0.0938 inches (3\/32 inch) to 0.25 inches (1\/4 inch) capacity, making it suitable for small-diameter drill bits, end mills, and similar cutting tools. The straight shank design measures 0.25 inches in diameter and provides straightforward installation into compatible spindles and tool holders. Overall length is 1.88 inches. The chuck uses a key-actuated mechanism to tighten the Rubber-Flex collet, delivering consistent clamping force around the tool shank. Machinists and tooling technicians working on manual or CNC machine tools install this chuck as part of a standard workholding setup.\u003c\/p\u003e\n\u003cp\u003eThis collet chuck is suited for light-duty machining applications in job shops, maintenance facilities, and production environments. It is appropriate for use with small drill bits, reamers, and rotary tools where accurate concentricity and repeatable grip are required. The compact 1.88-inch overall length makes it a practical choice where spindle clearance is limited. The collet nut diameter is 0.9000 inches. No through-coolant capability is present, so it is best applied in dry or flood-coolant-from-outside setups.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eRubber-Flex collet system provides consistent radial clamping across the full capacity range\u003c\/li\u003e\n  \u003cli\u003eCapacity range: 0.0938 inches to 0.25 inches for small-diameter tooling\u003c\/li\u003e\n  \u003cli\u003eStraight shank at 0.25 inches diameter for broad spindle compatibility\u003c\/li\u003e\n  \u003cli\u003eKey actuator for positive, controlled tightening\u003c\/li\u003e\n  \u003cli\u003eCompact 1.88-inch overall length suits tight-clearance setups\u003c\/li\u003e\n  \u003cli\u003eNo through-coolant path  -  suited for external coolant or dry-cut applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style Rubber-Flex collet chuck for use with compatible straight-shank spindle and tool holder systems accepting a 0.25-inch straight shank. No specific machine model compatibility was stated in the available product data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle completely before installing or removing the chuck. Use the correct chuck key to seat and tighten the collet; do not overtighten or use unauthorized leverage tools, as this can damage the Rubber-Flex collet or shank bore. Verify shank seating depth and runout with a dial indicator before returning the machine to service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Collet Capacity\u003c\/strong\u003e: 0.0938 inches (3\/32 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Collet Capacity\u003c\/strong\u003e: 0.25 inches (1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.88 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.25 inches (1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet Nut Diameter\u003c\/strong\u003e: 0.9000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCollet System\u003c\/strong\u003e: Rubber-Flex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuator Type\u003c\/strong\u003e: Key\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThrough Coolant\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.45 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112808\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: 9756\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JACOBS CHUCK","offers":[{"title":"Default Title","offer_id":67912034255154,"sku":"9756","price":180.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5ce6d5d28056127dfa637fe343143857.jpg?v=1791225587","url":"https:\/\/voomisupply.com\/products\/jacobs-9756-rubber-flex-collet-chuck-straight-shank","provider":"Voomi Supply","version":"1.0","type":"link"}