{"product_id":"sumitomo-u104090-external-grooving-toolholder-gnd","title":"Sumitomo U104090 External Grooving Toolholder Gnd","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO U104090 is an indexable external grooving toolholder built for precision grooving operations on turning centers and lathes. Designed in the GND style with a right-hand orientation, this toolholder accepts GCML, GCMN, and GCMR inserts secured by a screw-clamp holding method for reliable insert indexing. The shank measures 1 inch by 1 inch with a shank length of 4.559 inches and an overall length of 6 inches. Maximum depth of cut is 0.5 inches. This toolholder is a shop-floor staple for machinists and CNC operators working in production turning environments.\u003c\/p\u003e\u003cp\u003eThe U104090 is suited for external grooving applications on CNC lathes and manual turning machines in both job shop and production settings. The GND series design accommodates repetitive grooving passes where insert security and repeatable tool geometry are critical. The screw-clamp insert holding method provides firm seating and consistent edge positioning across insert changes, reducing setup time between operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eExternal grooving configuration with right-hand cutting orientation\u003c\/li\u003e\n\u003cli\u003eMaximum depth of cut: 0.5 inches\u003c\/li\u003e\n\u003cli\u003eScrew-clamp insert holding method for secure, repeatable insert seating\u003c\/li\u003e\n\u003cli\u003eCompatible with GCML, GCMN, and GCMR insert styles\u003c\/li\u003e\n\u003cli\u003eShank dimensions: 1 inch x 1 inch; shank length 4.559 inches; overall length 6 inches\u003c\/li\u003e\n\u003cli\u003eMulti-use tool design supports a range of grooving operations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned to accept GCML, GCMN, and GCMR series inserts. Compatible insert size code: GCML, GCMN, GCMR.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before mounting or removing the toolholder from the turret. Ensure the shank bore and mating surfaces are clean and free of chips before seating the holder. Follow the machine tool manufacturer torque specifications for turret clamping hardware and insert screw fasteners.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Type\u003c\/strong\u003e: External Grooving\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: GND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: GND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Inserts\u003c\/strong\u003e: GCML, GCMN, GCMR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Height\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 4.559 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 1.441 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Use Tool\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SUMITOMO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: U104090\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51755238588722,"sku":"U104090","price":241.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3a756f9e24b6359d45e5161536d88525.jpg?v=1788952512","url":"https:\/\/voomisupply.com\/products\/sumitomo-u104090-external-grooving-toolholder-gnd","provider":"Voomi Supply","version":"1.0","type":"link"}